Antistatic alumina ceramic and method for manufacturing the same

Abstract

The application relates to the technical field of anti-static alumina ceramic preparation, and relates to an anti-static alumina ceramic and a preparation method thereof.The preparation method comprises the following steps: obtaining an ultrafine alumina suspension, drying the ultrafine alumina suspension to obtain ultrafine alumina powder, extracting initial mass ratios from an initial mass ratio group in sequence to obtain an initial suspension, detecting the initial viscosity, the initial conductivity and the initial stability of the initial suspension, respectively collecting the initial viscosity, the initial conductivity and the initial stability to obtain an initial viscosity group, an initial conductivity group and an initial stability group, establishing a mathematical model, obtaining anti-static alumina based on an alumina matrix sample, a modified antimony-tin conductive agent sample and a dispersant sample, and preparing the anti-static alumina ceramic based on the anti-static alumina.The anti-static performance of the anti-static alumina can be improved.

Description

Technical Field

[0001] This invention relates to the field of antistatic alumina ceramic preparation technology, and in particular to an antistatic alumina ceramic and its preparation method. Background Technology

[0002] Alumina is a high-hardness compound that generally does not possess antistatic properties under normal conditions. Antistatic alumina refers to ordinary alumina that has been modified through a series of physical or chemical methods to acquire certain antistatic capabilities.

[0003] Traditional methods for preparing antistatic alumina involve mixing conductive fillers with alumina powder and then sintering the mixture. However, this method has several drawbacks. Firstly, the amount of conductive filler added is difficult to control precisely. Insufficient filler will fail to form an effective conductive network, resulting in poor antistatic performance. Excessive filler will reduce the original properties of the alumina material, such as hardness, strength, and chemical stability. Secondly, the poor compatibility between the conductive filler and the alumina matrix can lead to agglomeration, resulting in uneven conductivity and affecting product quality and stability. Therefore, improving the antistatic properties of antistatic alumina is crucial. Summary of the Invention

[0004] This invention provides a cement grouting drilling machine, the main purpose of which is to improve the antistatic properties of antistatic alumina.

[0005] To achieve the above objectives, the present invention provides an antistatic alumina ceramic, comprising:

[0006] The antistatic alumina ceramic contains the following elemental mass percentage distribution: oxygen 34.99%, aluminum 45.59%, titanium 2.69%, silicon 3.96%, iron 1.46%, and molybdenum 11.31%.

[0007] This invention provides a method for preparing antistatic alumina ceramics and a computer-readable storage medium, the main purpose of which is to improve the antistatic properties of antistatic alumina.

[0008] To achieve the above objectives, the present invention provides a method for preparing antistatic alumina ceramics, comprising:

[0009] Once high-purity alumina powder is identified, it is placed in a pre-constructed crucible to obtain alumina powder to be heated. The alumina powder to be heated is continuously heated, and the time is recorded in real time from the start time of heating to obtain the start time of heating.

[0010] When the initial heating time equals the preset calcination time, the continuous heating of the alumina powder to be heated is stopped to obtain calcined alumina powder, and grinding media liquid is prepared based on the calcined alumina powder;

[0011] An ultrafine alumina suspension is obtained by grinding media liquid and calcined alumina powder, and the ultrafine alumina suspension is dried to obtain ultrafine alumina powder.

[0012] Obtain the initial mass ratio group, alumina powder mass ratio range, conductive agent mass ratio range, dispersant mass ratio range, and modified antimony-tin conductive agent;

[0013] Initial mass ratios were extracted sequentially from the initial mass ratio group. Based on the extracted initial mass ratios, alumina powder mass ratio ranges, conductive agent mass ratio ranges, and dispersant mass ratio ranges, alumina powder samples, conductive agent samples, and dispersant samples were obtained.

[0014] Initial suspensions were obtained from alumina powder samples, conductive agent samples, and dispersant samples. The initial viscosity, initial conductivity, and initial stability of the initial suspensions were then tested.

[0015] The initial viscosity, initial conductivity, and initial stability were summarized separately to obtain the initial viscosity group, initial conductivity group, and initial stability group;

[0016] A mathematical model is established based on the initial viscosity set, initial conductivity set, and initial stability set. The mathematical model is then optimized using a pre-constructed response methodology to obtain the optimal mass ratio.

[0017] Using ultrafine alumina powder, the optimal mass ratio, and a modified antimony-tin conductive agent, samples of alumina matrix, modified antimony-tin conductive agent, and dispersant were weighed. Based on the alumina matrix, modified antimony-tin conductive agent, and dispersant samples, antistatic alumina was obtained, and antistatic alumina ceramics were prepared based on the antistatic alumina.

[0018] Optionally, obtaining the initial mass ratio group, the alumina powder mass ratio range, the conductive agent mass ratio range, the dispersant mass ratio range, and the modified antimony-tin conductive agent includes:

[0019] Anhydrous ethanol, tin antimony oxide nanoparticles and silane coupling agent were obtained. The silane coupling agent was dissolved in anhydrous ethanol and stirred to obtain an ethanol solution.

[0020] Modified antimony-tin conductive agent was obtained based on ultrafine alumina powder, tin-antimony oxide nanopowder and ethanol solution. The mass ratio range of alumina powder, the mass ratio range of conductive agent and the mass ratio range of dispersant were obtained based on ultrafine alumina powder, modified antimony-tin conductive agent and pre-constructed dispersant.

[0021] Construct an experimental matrix and obtain the initial mass ratio group based on the experimental matrix.

[0022] Optionally, establishing a mathematical model based on the initial viscosity set, initial conductivity set, and initial stability set includes:

[0023] Initial viscosity is extracted sequentially from the initial viscosity group, and the target initial conductivity and target initial stability corresponding to the initial viscosity are confirmed from the initial conductivity group and the initial stability group based on the initial viscosity.

[0024] Based on the initial viscosity, target initial conductivity, and target initial stability, the target alumina powder sample mass, target conductive agent sample mass, and target dispersant sample mass corresponding to the initial mass ratio were determined.

[0025] The conductivity interaction coefficient of aluminum powder is obtained based on the sample mass of the target alumina powder and the sample mass of the target conductive agent; the conductivity interaction coefficient of aluminum powder is obtained based on the sample mass of the target alumina powder and the sample mass of the target dispersant; and the conductivity interaction coefficient of conductive agent is obtained based on the sample mass of the target dispersant and the sample mass of the target conductive agent.

[0026] The interaction coefficients of aluminum powder conductivity, aluminum powder dispersant, and conductive dispersant were summarized to obtain the groups of aluminum powder conductivity interaction coefficients, aluminum powder dispersant interaction coefficients, and conductive dispersant interaction coefficients, respectively.

[0027] A mathematical model is constructed based on the interaction coefficients of aluminum powder conductivity, aluminum powder dispersant, and conductive dispersant, as described below:

[0028] ,

[0029] in, Representing a mathematical model, Represents a constant term. This represents the linear coefficient of the preset alumina powder sample. Indicates the mass of the target alumina powder sample. This represents the linear coefficient of a preset conductive agent sample. Indicates the quality of the target conductive agent sample. This represents the linear coefficient of the preset dispersant sample. Indicates the sample quality of the target dispersant. This represents the quadratic linear coefficient of the preset alumina powder sample. This represents the quadratic linear coefficient of the preset conductive agent sample. This represents the quadratic linear coefficient of the preset dispersant sample. Indicates the first The aluminum powder conductivity interaction coefficient in the group of aluminum powder conductivity interaction coefficients Indicates the first The interaction coefficients of aluminum powder dispersants in the group of aluminum powder dispersant interaction coefficients Indicates the first The conductive dispersant interaction coefficients in the group of conductive dispersant interaction coefficients This indicates the preset error term.

[0030] Optionally, obtaining antistatic alumina based on an alumina matrix sample, a modified antimony-tin conductive agent sample, and a dispersant sample includes:

[0031] Based on alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples, a uniform suspension, ultrasonic power, and drying time were obtained. The pH of the uniform suspension was adjusted to obtain an acid-base conditioned suspension. The acid-base conditioned suspension was then dispersed and optimized using a pre-constructed high-speed shear emulsifier to obtain an optimized suspension. The shear rate was preset in the high-speed shear emulsifier.

[0032] A dried blank is obtained by optimizing the suspension, ultrasonic power and drying time. A sintered alumina sample is obtained according to the preset gas ratio and the dried blank. The sintered alumina sample is then cleaned to obtain a clean alumina sample.

[0033] The clean alumina sample was dried to obtain a dried alumina sample, and antistatic alumina was obtained based on the dried alumina sample.

[0034] Optionally, obtaining the dried blank based on optimizing the suspension, ultrasonic power, and drying time includes:

[0035] The viscosity of the suspension is optimized by detecting ultrasonic power and drying time, and it is determined whether the viscosity of the suspension is within the preset viscosity range.

[0036] If the viscosity of the suspension is not within the preset suspension viscosity range, the suspension viscosity is regarded as abnormal viscosity, the upper limit and lower limit of the suspension viscosity range are obtained, and the abnormal viscosity is compared with the upper limit and the lower limit.

[0037] If the abnormal viscosity is greater than the upper limit of the interval, the dispersant is added to the optimized suspension corresponding to the abnormal viscosity to obtain an updated suspension. The updated suspension is used as the optimized suspension, and the process returns to the step of detecting the suspension viscosity of the optimized suspension until the suspension viscosity is within the suspension viscosity interval.

[0038] If the abnormal viscosity is less than the lower limit of the interval, a pre-constructed thickener is added to the optimized suspension corresponding to the abnormal viscosity to obtain a suboptimal suspension. The suboptimal suspension is then used as the optimized suspension, and the process returns to the step of detecting the suspension viscosity of the optimized suspension until the suspension viscosity is within the suspension viscosity interval.

[0039] If the viscosity of the suspension is within the suspension viscosity range, the pre-built atomizer is calibrated to obtain the calibrated atomizer. The calibrated atomizer is then used to atomize the optimized suspension to obtain an atomized droplet set.

[0040] An inert gas is obtained and introduced into a pre-constructed drying chamber to obtain a pre-set drying chamber. The pre-set drying chamber is then preheated to obtain a suitable drying chamber.

[0041] The atomized liquid droplets are sprayed into a suitable drying chamber to obtain a set of dried spherical particles. The dried spherical particles are then dry-pressed to obtain a dried blank.

[0042] Optionally, the formula for calculating the viscosity of the suspension is as follows:

[0043] ,

[0044] in, Indicates the viscosity of the suspension. Indicates the viscosity of a homogeneous suspension. Indicates ultrasonic power. Indicates the ultrasonic dispersion time. Indicates drying time. This indicates the surface area of ​​the modified antimony-tin powder. Indicates the pH value of the suspension. Indicates shear rate, This indicates the preset raw material mass ratio. This indicates the preset reference ultrasonic power. This indicates the preset reference ultrasound time. This indicates the preset reference drying time. This indicates the preset reference specific surface area. This indicates the preset reference shear rate.

[0045] Optionally, obtaining antistatic alumina based on a dried alumina sample includes:

[0046] A plasma activation operation was performed on the dry alumina sample to obtain an activated alumina sample. A conductive coating was then deposited on the activated alumina sample to obtain a deposited alumina sample.

[0047] A set of measurement locations was obtained from the deposited alumina sample. Antistatic properties were measured at each measurement location in the set to obtain a set of surface resistivity values. The average resistivity of the set of surface resistivity values ​​was then calculated.

[0048] Compare the average resistivity with the preset resistivity threshold;

[0049] If the average resistivity is greater than the resistivity threshold, the deposited alumina sample corresponding to the average resistivity is taken as the activated aluminum sample, and the process of depositing a conductive coating on the activated aluminum sample is repeated until the average antistatic value is less than or equal to the preset antistatic threshold.

[0050] If the average resistivity is less than or equal to the resistivity threshold, the deposited alumina sample corresponding to the average resistivity is taken as antistatic alumina.

[0051] Optionally, the step of depositing a conductive coating on the activated aluminum sample to obtain a deposited alumina sample includes:

[0052] A sealed chamber was obtained based on a pre-constructed substrate stage and activated aluminum sample. The sealed chamber was then evacuated to obtain a vacuum chamber. The time for evacuating the sealed chamber was taken as the start of the pressure holding time.

[0053] When the pressure holding time is the preset pressure holding time, the vacuum level value of the vacuum chamber is detected and compared with the preset vacuum level threshold.

[0054] If the vacuum level is less than the vacuum level threshold, check the airtightness of the vacuum chamber. If the airtightness is less than the preset airtightness threshold, reseal the vacuum chamber to obtain an optimized vacuum chamber. Use the optimized vacuum chamber as a sealed chamber and return to the step of evacuating the sealed chamber until the vacuum level is greater than or equal to the vacuum level threshold.

[0055] If the vacuum level is greater than or equal to the vacuum threshold, the process gas is obtained, and the process environment is obtained based on the process gas and the vacuum chamber.

[0056] An activated aluminum sample in a process environment is deposited using preset deposition parameters to obtain a deposited alumina sample. The deposition parameters include sputtering power, substrate temperature, and substrate stage rotation speed.

[0057] To achieve the above objectives, the present invention also provides an antistatic alumina ceramic and a preparation system thereof, comprising:

[0058] The ultrafine alumina powder preparation module is used to identify high-purity alumina powder, place the high-purity alumina powder in a pre-constructed crucible to obtain alumina powder to be heated, continuously heat the alumina powder to be heated, and record the start time of heating the alumina powder to be heated in real time as the starting time to obtain the start heating time. When the start heating time is equal to the preset calcination time, the continuous heating of the alumina powder to be heated is stopped to obtain calcined alumina powder. Grinding media liquid is prepared based on the calcined alumina powder, and an ultrafine alumina suspension is obtained based on the grinding media liquid and calcined alumina powder. The ultrafine alumina suspension is dried to obtain ultrafine alumina powder.

[0059] The initial suspension acquisition module is used to acquire initial mass ratio groups, alumina powder mass ratio ranges, conductive agent mass ratio ranges, dispersant mass ratio ranges, and modified antimony-tin conductive agent. It sequentially extracts the initial mass ratio from the initial mass ratio group, and acquires alumina powder samples, conductive agent samples, and dispersant samples based on the extracted initial mass ratios, alumina powder mass ratio ranges, conductive agent mass ratio ranges, and dispersant mass ratio ranges. It then acquires the initial suspension based on the alumina powder samples, conductive agent samples, and dispersant samples, and detects the initial viscosity, initial conductivity, and initial stability of the initial suspension.

[0060] The mass ratio optimization module is used to summarize the initial viscosity, initial conductivity, and initial stability to obtain the initial viscosity group, initial conductivity group, and initial stability group. Based on the initial viscosity group, initial conductivity group, and initial stability group, a mathematical model is established. The mathematical model is optimized using a pre-built response methodology to obtain the optimal mass ratio.

[0061] The alumina ceramic preparation module is used to weigh alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples using ultrafine alumina powder, the optimal mass ratio, and modified antimony-tin conductive agent. Based on the alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples, antistatic alumina is obtained, and antistatic alumina ceramics are prepared based on the antistatic alumina.

[0062] To address the above problems, the present invention also provides an electronic device, the electronic device comprising:

[0063] Memory, storing at least one instruction;

[0064] The processor executes the instructions stored in the memory to implement the above-described method for preparing antistatic alumina ceramics.

[0065] To address the aforementioned problems, the present invention also provides a computer-readable storage medium storing at least one instruction, which is executed by a processor in an electronic device to implement the above-described method for preparing antistatic alumina ceramics.

[0066] To address the problems described in the background art, this invention identifies high-purity alumina powder, places it in a pre-constructed crucible to obtain alumina powder to be heated, and continuously heats the alumina powder, recording the starting time of heating in real time to obtain the start heating time. This invention's high-purity alumina powder avoids impurities affecting the structural uniformity and performance stability of ceramics. Precise control of the calcination time allows the alumina powder to complete crystal transformation and initial particle sintering, improving the crystallinity of the powder and reducing the difficulty of subsequent grinding processes. When the start heating time equals the preset calcination time, continuous heating of the alumina powder is stopped, resulting in calcined alumina powder. The preparation of calcined alumina powder... The present invention utilizes a grinding media liquid adapted to the characteristics of calcined alumina powder to improve particle dispersibility during subsequent grinding, prevent powder agglomeration, and ensure uniform particle size of alumina particles after grinding. An ultrafine alumina suspension is obtained based on the grinding media liquid and calcined alumina powder. This ultrafine alumina suspension is then dried to obtain ultrafine alumina powder. The ultrafine alumina powder of the present invention has a smaller particle size and larger specific surface area, which can improve the density of the ceramic body, reduce the porosity after sintering, and thus improve the uniformity of the mechanical and antistatic properties of the alumina ceramic. The invention also obtains initial mass ratio groups, alumina powder mass ratio ranges, conductive agent mass ratio ranges, dispersant mass ratio ranges, and a modified antimony-tin conductive agent. The modified antimony-tin conductive agent of the present invention possesses superior properties. The alumina exhibits superior conductivity and chemical stability, making it a core antistatic functional component in ceramics. Initial mass ratios are extracted sequentially from the initial mass ratio group. Based on the extracted initial mass ratios, alumina powder mass ratio ranges, conductive agent mass ratio ranges, and dispersant mass ratio ranges, alumina powder samples, conductive agent samples, and dispersant samples are obtained. An initial suspension is then prepared based on these samples, and the initial viscosity, initial conductivity, and initial stability of the initial suspension are measured. This invention, by preparing an initial suspension, can simulate the subsequent preparation system of antistatic alumina, providing a basic sample for performance testing. The initial viscosity, initial conductivity, and initial stability are summarized to obtain initial viscosity groups, initial conductivity groups, and initial stability groups. Mathematical models were established based on initial viscosity, initial conductivity, and initial stability groups. These models were then optimized using a pre-constructed response methodology to obtain the optimal mass ratio. This invention's response methodology enables synergistic optimization of multiple factors and objectives. By fitting the influence of each raw material ratio on the suspension's performance through the mathematical model, the optimal mass ratio that balances viscosity, conductivity, and stability can be quickly selected. Compared to traditional single-factor experimental methods, this significantly shortens the optimization cycle while ensuring the scientific validity and reliability of the optimal mass ratio. Using ultrafine alumina powder, the optimal mass ratio, and modified antimony-tin conductive agent, samples of alumina matrix, modified antimony-tin conductive agent, and dispersant were weighed. This invention, based on the optimal mass ratio, ensures that the synergistic effect of each component is maximized.Antistatic alumina was obtained based on alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples. Antistatic alumina ceramics were then prepared based on this antistatic alumina. Therefore, this invention can improve the antistatic properties of antistatic alumina. Attached Figure Description

[0067] Figure 1 This is a schematic flowchart of a method for preparing antistatic alumina ceramics according to an embodiment of the present invention;

[0068] Figure 2 This is a functional block diagram of an antistatic alumina ceramic preparation system provided in an embodiment of the present invention;

[0069] Figure 3 This is a schematic diagram of the structure of an electronic device for implementing the antistatic alumina ceramic preparation method according to an embodiment of the present invention.

[0070] Explanation of reference numerals in the attached figures:

[0071] 10. Electronic device; 11. Processor; 12. Memory; 13. Bus.

[0072] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0073] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0074] This application provides a method for preparing antistatic alumina ceramics. The execution subject of the antistatic alumina ceramic preparation method includes, but is not limited to, at least one of the following electronic devices that can be configured to execute the method provided in this application: a server, a terminal, etc. In other words, the antistatic alumina ceramic preparation method can be executed by software or hardware installed on a terminal device or a server device, and the software can be a blockchain platform. The server includes, but is not limited to, a single server, a server cluster, a cloud server, or a cloud server cluster.

[0075] Reference Figure 1 The diagram shown is a schematic flow chart of a method for preparing antistatic alumina ceramics according to an embodiment of the present invention. In this embodiment, the method for preparing antistatic alumina ceramics includes:

[0076] S1. Identify high-purity alumina powder, place the high-purity alumina powder in a pre-constructed crucible to obtain alumina powder to be heated, continuously heat the alumina powder to be heated, and record the time in real time starting from the time when the alumina powder to be heated begins to obtain the start heating time.

[0077] It should be explained that high-purity alumina powder refers to a powdery substance with extremely high alumina content and extremely low impurity content. For example, the alumina content is 99.9%. A crucible is a container made of high-temperature resistant material used in this preparation process to hold the high-purity alumina powder. It can withstand the high-temperature heating process, protecting the alumina powder from direct contact with the external environment and avoiding contamination and other adverse reactions. Examples of high-temperature resistant materials include ceramics, quartz, and metals. The alumina powder to be heated is the aluminum powder after the high-purity alumina powder has been placed in the crucible. Heating parameters are pre-set parameters used to control the temperature rise during the heating process. They ensure that the alumina powder is heated evenly, avoiding quality problems caused by localized overheating due to excessively rapid heating, and ensuring that the expected calcination effect is achieved, resulting in appropriate changes to the crystal structure of the alumina powder. Heating parameters include: heating rate, target temperature, etc. The start heating time refers to the real-time recording time starting from the moment when the alumina powder to be heated is heated using preset heating parameters. It is used to precisely control the duration of the calcination process so that heating can be stopped in time when the preset calcination time is reached, ensuring the accuracy and repeatability of the calcination process.

[0078] S2. When the initial heating time equals the preset calcination time, stop continuously heating the alumina powder to be heated to obtain calcined alumina powder, and prepare grinding media liquid based on the calcined alumina powder.

[0079] It should be explained that the calcination time refers to the preset duration of continuous heating of the alumina powder to be heated. Calcined alumina powder refers to the aluminum powder obtained after stopping continuous heating of the alumina powder when the initial heating time equals the preset calcination time. The steps for preparing the grinding media liquid from the calcined alumina powder are as follows: first, determine the mass of the calcined alumina powder, and then calculate the required volume of the grinding media liquid based on the preset liquid-to-solid ratio. For example, if the preset liquid-to-solid ratio is 3:1 (volume ratio), and the volume of the calcined alumina powder is 100 ml, then 300 ml of liquid needs to be measured as the grinding media liquid.

[0080] S3. Obtain an ultrafine alumina suspension based on the grinding media liquid and calcined alumina powder, and dry the ultrafine alumina suspension to obtain ultrafine alumina powder.

[0081] It should be explained that the step of obtaining ultrafine alumina suspension based on grinding media liquid and calcined alumina powder is as follows: Grinding media liquid, calcined alumina powder, and pre-constructed zirconia grinding balls are placed in a pre-constructed ball mill jar to obtain a sealed ball mill jar. A grinding slurry is produced using a pre-constructed planetary ball mill and the sealed ball mill jar. The grinding slurry is then sieved to obtain ultrafine alumina suspension. Ultrafine alumina suspension refers to a product where 50% of the particles have a diameter of less than or equal to 500 nanometers after sieving the grinding slurry using a 400-mesh sieve. The purpose of sieving is to remove any larger particles or impurities that may be present in the grinding slurry, making the alumina powder particles in the suspension more uniform and fine. Ultrafine alumina powder refers to the product obtained after drying the ultrafine alumina suspension. Zirconia grinding balls are a type of grinding media with high hardness, high wear resistance, and chemical stability. During the ball milling process, the zirconia grinding balls move continuously with the rotation of the ball mill jar, colliding and rubbing against the calcined alumina powder, gradually grinding and refining the alumina powder particles. A grinding jar is a container used for ball milling operations. A sealed grinding jar is a completely enclosed grinding container that is sealed to the external environment by filling it with grinding media liquid, calcined alumina powder, and zirconia grinding balls, and then sealing it with a sealing structure (such as sealing rings, sealing cap fastening devices, etc.). The working principle of a sealed grinding jar is that it is installed on a common rotating disk (i.e., a planetary ball mill). After the planetary ball mill is started, the common rotating disk drives the sealed grinding jar to rotate in a circular motion. The sealed grinding jar revolves around the central axis of the common rotating disk and also rotates on its own central axis, forming a planetary motion-like phenomenon. This complex motion causes the zirconia grinding balls and materials inside the grinding jar to be subjected to strong impact, friction, and shear forces, thereby quickly and effectively grinding the calcined alumina powder into finer particles, greatly improving grinding efficiency and grinding effect. Grinding slurry refers to the mixture obtained after placing the sealed grinding jar in a planetary ball mill and grinding the calcined alumina powder inside the sealed grinding jar. The step of placing a sealed ball mill jar in a planetary ball mill and grinding the calcined alumina powder inside the sealed ball mill jar, as described in this embodiment of the invention, is existing technology and will not be repeated here.

[0082] S4. Obtain the initial mass ratio group, the mass ratio range of alumina powder, the mass ratio range of conductive agent, the mass ratio range of dispersant, and the modified antimony-tin conductive agent.

[0083] Specifically, obtaining the initial mass ratio group, the alumina powder mass ratio range, the conductive agent mass ratio range, the dispersant mass ratio range, and the modified antimony-tin conductive agent includes:

[0084] Anhydrous ethanol, tin antimony oxide nanoparticles and silane coupling agent were obtained. The silane coupling agent was dissolved in anhydrous ethanol and stirred to obtain an ethanol solution.

[0085] Modified antimony-tin conductive agent was obtained based on ultrafine alumina powder, tin-antimony oxide nanopowder and ethanol solution. The mass ratio range of alumina powder, the mass ratio range of conductive agent and the mass ratio range of dispersant were obtained based on ultrafine alumina powder, modified antimony-tin conductive agent and pre-constructed dispersant.

[0086] Construct an experimental matrix and obtain the initial mass ratio group based on the experimental matrix.

[0087] It should be explained that anhydrous ethanol refers to ethanol with a purity greater than 99.5%, a commonly used organic solvent that is volatile and flammable, and miscible with many organic solvents such as water, ether, and chloroform. Tin-antimony oxide nanopowder refers to nanoscale powder materials composed of oxides of tin and antimony. Nanoscale means that the particle size is very small, typically between 1 and 100 nanometers. Silane coupling agents are organosilicon compounds containing two different chemical groups in their molecules, used to improve the dispersibility of tin-antimony oxide nanopowder in ethanol solutions and subsequent systems, reducing agglomeration. Ethanol solution refers to a homogeneous mixture formed by dissolving the silane coupling agent in anhydrous ethanol and stirring. Modified antimony-tin conductive agent refers to the powder material obtained by sieving refined modified antimony-tin powder using a pre-set medium-diameter mesh (such as a 300-mesh sieve) and collecting the product passing through the sieve. The experimental matrix is ​​expressed as follows:

[0088] ,

[0089] in, Represents the experiment matrix, Indicates the first The mass ratio of alumina powder in each row vector Indicates the first The mass ratio of conductive agent in each row vector. Indicates the first The dispersant mass ratio in each row vector Indicates the first The mass ratio of alumina powder in each row vector Indicates the first The mass ratio of conductive agent in each row vector. Indicates the first The mass ratio of dispersant in each row vector. Constructing the experimental matrix refers to building the experimental matrix based on a central composite design. The central composite design is a batch experiment method for quadratic polynomial response surface models. The construction of the experimental matrix based on the central composite design described in this embodiment is prior art and will not be elaborated further here. Obtaining the initial mass ratio set from the experimental matrix means directly extracting the mass ratio combination of the three raw materials represented by each row from the constructed experimental matrix to obtain the initial mass ratio, and summing the initial mass ratios to obtain the initial mass ratio set.

[0090] S5. Sequentially extract the initial mass ratio from the initial mass ratio group, and obtain alumina powder samples, conductive agent samples and dispersant samples based on the extracted initial mass ratio, alumina powder mass ratio range, conductive agent mass ratio range and dispersant mass ratio range.

[0091] It should be explained that the steps for obtaining alumina powder samples, conductive agent samples, and dispersant samples based on the extracted initial mass ratio, alumina powder mass ratio range, conductive agent mass ratio range, and dispersant mass ratio range are as follows: Based on the initial mass ratio, within each of the alumina powder mass ratio range, conductive agent mass ratio range, and dispersant mass ratio range, determine the specific mass proportions of alumina powder, conductive agent, and dispersant, respectively. Then, weigh the corresponding masses of alumina powder, conductive agent, and dispersant according to these specific mass proportions, thereby obtaining the alumina powder samples, conductive agent samples, and dispersant samples. The alumina powder mass ratio range, conductive agent mass ratio range, and dispersant mass ratio range represent the respective proportions of alumina powder, modified antimony-tin conductive agent, and dispersant in the raw material proportioning experiment for preparing antistatic alumina suspension. For example, the mass ratio of alumina powder to the total mass of raw materials can range from 70% to 90%, the mass ratio of modified antimony-tin conductive agent to the total mass of raw materials can range from 5% to 20%, and the mass ratio of dispersant to the total mass of raw materials can range from 1% to 5%. The mass ratio of alumina powder is 80%, the mass ratio of modified antimony-tin conductive agent is 15%, and the mass ratio of dispersant is 5%, indicating that the mass ratios of alumina powder, modified antimony-tin conductive agent, and dispersant are all within their respective ranges, and the sum of the three is 100%.

[0092] S6. Obtain the initial suspension based on the alumina powder sample, conductive agent sample, and dispersant sample, and test the initial viscosity, initial conductivity, and initial stability of the initial suspension.

[0093] It should be explained that the initial viscosity is a quantitative value of the viscosity of the initial suspension prepared from the alumina powder sample, conductive agent sample, and dispersant sample. The initial conductivity is a numerical value of the initial suspension's ability to conduct current. The initial stability is a quantitative value of the initial suspension's ability to maintain uniform dispersion of all components within the system, without significant stratification or solid particle sedimentation during standing or storage. This initial stability can be evaluated by observing changes in the appearance, sedimentation rate, stratification, or absorbance of the initial suspension over a certain period. Better stability indicates better particle dispersion in the suspension, and a lower likelihood of aggregation or sedimentation.

[0094] S7. Summarize the initial viscosity, initial conductivity, and initial stability to obtain the initial viscosity group, initial conductivity group, and initial stability group.

[0095] It should be explained that the initial viscosity set refers to the set of all initial viscosities. The initial conductivity set refers to the set of all initial conductivityes. The initial stability set refers to the set of all initial stabilityes.

[0096] S8. Establish a mathematical model based on the initial viscosity group, initial conductivity group, and initial stability group. Optimize the mathematical model using a pre-constructed response methodology to obtain the optimal mass ratio.

[0097] It should be explained that the step of optimizing the mathematical model using a pre-constructed response methodology to obtain the optimal mass ratio is as follows: First, prepare corresponding initial suspensions based on the initial mass ratio groups, and detect the initial viscosity, initial conductivity, and initial stability of each initial suspension group. Summarize the above performance index data and the corresponding initial mass ratio data to establish a mathematical model with the mass ratio of alumina powder, conductive agent, and dispersant as independent variables and initial viscosity, initial conductivity, and initial stability as dependent variables. Then, set an objective function that adapts to the performance requirements of the suspension, and use the pre-constructed response methodology combined with optimization algorithms (such as gradient descent or genetic algorithms) to solve the above mathematical model and objective function in a coupled manner. By analyzing the comprehensive influence of each independent variable on the dependent variable, the optimal solution that can make the initial viscosity, initial conductivity, and initial stability all meet the preset requirements is selected. The optimal solution corresponds to the optimal mass ratio. The objective function for adapting the performance requirements of the suspension is set as follows: First, based on the process requirements of subsequent molding, coating, or ceramic preparation of the suspension, the target values ​​for initial viscosity, initial conductivity, and initial stability are determined. Second, the dependent variables describing each performance index in the mathematical model are compared with the corresponding target values ​​to construct function terms for measuring the degree of deviation, such as error square terms, relative error terms, or weighted error terms. Subsequently, based on the importance of each performance index in the actual process, corresponding weight coefficients are assigned to each deviation function term to reflect the differences in the impact of different performances on the final product quality. Finally, all deviation function terms are combined to form an objective function that can comprehensively reflect the gap between the overall performance of the suspension and the target requirements.

[0098] In detail, the establishment of a mathematical model based on the initial viscosity set, initial conductivity set, and initial stability set includes:

[0099] Initial viscosity is extracted sequentially from the initial viscosity group, and the target initial conductivity and target initial stability corresponding to the initial viscosity are confirmed from the initial conductivity group and the initial stability group based on the initial viscosity.

[0100] Based on the initial viscosity, target initial conductivity, and target initial stability, the target alumina powder sample mass, target conductive agent sample mass, and target dispersant sample mass corresponding to the initial mass ratio were determined.

[0101] The conductivity interaction coefficient of aluminum powder is obtained based on the sample mass of the target alumina powder and the sample mass of the target conductive agent; the conductivity interaction coefficient of aluminum powder is obtained based on the sample mass of the target alumina powder and the sample mass of the target dispersant; and the conductivity interaction coefficient of conductive agent is obtained based on the sample mass of the target dispersant and the sample mass of the target conductive agent.

[0102] The interaction coefficients of aluminum powder conductivity, aluminum powder dispersant, and conductive dispersant were summarized to obtain the groups of aluminum powder conductivity interaction coefficients, aluminum powder dispersant interaction coefficients, and conductive dispersant interaction coefficients, respectively.

[0103] A mathematical model is constructed based on the interaction coefficients of aluminum powder conductivity, aluminum powder dispersant, and conductive dispersant, as described below:

[0104] ,

[0105] in, Representing a mathematical model, Represents a constant term. This represents the linear coefficient of the preset alumina powder sample. Indicates the mass of the target alumina powder sample. This represents the linear coefficient of a preset conductive agent sample. Indicates the quality of the target conductive agent sample. This represents the linear coefficient of the preset dispersant sample. Indicates the sample quality of the target dispersant. This represents the quadratic linear coefficient of the preset alumina powder sample. This represents the quadratic linear coefficient of the preset conductive agent sample. This represents the quadratic linear coefficient of the preset dispersant sample. Indicates the first The aluminum powder conductivity interaction coefficient in the group of aluminum powder conductivity interaction coefficients Indicates the first The interaction coefficients of aluminum powder dispersants in the group of aluminum powder dispersant interaction coefficients Indicates the first The conductive dispersant interaction coefficients in the group of conductive dispersant interaction coefficients This indicates the preset error term.

[0106] It should be explained that the linear coefficients for the conductive agent sample, dispersant sample, and alumina powder sample are linear influence parameters in the mathematical model used to characterize the degree of influence of the mass of the conductive agent sample, dispersant sample, and alumina powder sample on the model output (such as initial viscosity, initial conductivity, or initial stability). These are the linear changes in the predicted value of the mathematical model when the mass of the conductive agent sample, dispersant sample, or alumina powder sample increases by one unit. The target alumina powder sample mass, target conductive agent sample mass, and target dispersant sample mass are, respectively, the masses of the alumina powder sample, conductive agent sample, and dispersant sample that, given a certain initial viscosity and its corresponding target initial conductivity and target initial stability, are determined based on the initial mass ratio and are the masses that enable the suspension to achieve the specified performance indicators.

[0107] For example, in Experiment 1: the mass of alumina powder is 80g, the mass of conductive agent is 15g, the mass of dispersant is 5g, the viscosity is 100mPa·s, the conductivity is 0.5S / m, and the stability is 0.9. In Experiment 2: the mass of alumina powder is 70g, the mass of conductive agent is 20g, the mass of dispersant is 10g, the viscosity is 150mPa·s, the conductivity is 0.7S / m, and the stability is 0.8. The initial viscosity is 100mPa·s, which corresponds to Experiment 1, where the target alumina powder sample mass is 80g, the target conductive agent sample mass is 15g, and the target dispersant sample mass is 5g.

[0108] Importantly, the target initial conductivity refers to the conductivity data found from the initial conductivity set given a known initial viscosity. The target initial stability refers to the initial stability data found from the initial stability set given a known initial viscosity. The quadratic linear coefficients for the conductive agent sample, the dispersant sample, and the alumina powder sample are set in this invention to prevent the rate of change of the mathematical model from altering with increasing sample volume, thus exhibiting a curvilinear characteristic. The error term refers to a pre-set value used to account for potential deviations between model predictions and actual observations. The constant term refers to the value of the mathematical model when all independent variables (A=0, B=0, C=0) are zero. The methods for obtaining the aluminum powder conductivity interaction coefficient based on the target alumina powder sample mass and the target conductive agent sample mass, the aluminum powder dispersant interaction coefficient based on the target alumina powder sample mass and the target dispersant sample mass, and the conductive dispersant interaction coefficient based on the target conductive agent sample mass and the target dispersant sample mass are all parameter solving methods commonly used by those skilled in the art when establishing multiple regression models, response surface models, or other multi-factor influence models. These interaction coefficients are essentially model parameters used to describe the strength of the interaction between two factors. They are typically obtained by fitting experimental data, performing regression analysis, or analyzing variance, which are well-known modeling methods in the field and will not be elaborated upon here. The aluminum powder conductivity interaction coefficient group, the aluminum powder dispersant interaction coefficient group, and the conductive dispersant interaction coefficient group are respectively sets composed of aluminum powder conductivity interaction coefficients, sets composed of aluminum powder dispersant interaction coefficients, and sets composed of conductive dispersant interaction coefficients.

[0109] S9. Using ultrafine alumina powder, the optimal mass ratio, and modified antimony-tin conductive agent, weigh alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples. Obtain antistatic alumina based on the alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples. Prepare antistatic alumina ceramics based on the antistatic alumina.

[0110] It should be noted that the mass percentage distribution of the elements in the antistatic alumina ceramic is as follows: oxygen: 34.99%, aluminum: 45.59%, titanium: 2.69%, silicon: 3.96%, iron: 1.46%, and molybdenum: 11.31%.

[0111] In detail, the process of obtaining antistatic alumina based on alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples includes:

[0112] Based on alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples, a uniform suspension, ultrasonic power, and drying time were obtained. The pH of the uniform suspension was adjusted to obtain an acid-base conditioned suspension. The acid-base conditioned suspension was then dispersed and optimized using a pre-constructed high-speed shear emulsifier to obtain an optimized suspension. The shear rate was preset in the high-speed shear emulsifier.

[0113] A dried blank is obtained by optimizing the suspension, ultrasonic power and drying time. A sintered alumina sample is obtained according to the preset gas ratio and the dried blank. The sintered alumina sample is then cleaned to obtain a clean alumina sample.

[0114] The clean alumina sample was dried to obtain a dried alumina sample, and antistatic alumina was obtained based on the dried alumina sample.

[0115] Importantly, the steps of obtaining a uniform suspension, ultrasonic power, and drying time based on the alumina matrix sample, modified antimony-tin conductive agent sample, and dispersant sample are as follows: a paste-like mixture is obtained based on tin-antimony oxide nanopowder and ethanol solution, and a pre-constructed ultrasonic cleaner is set using preset ultrasonic parameters to obtain the pre-set ultrasonic cleaner, wherein the ultrasonic parameters include ultrasonic power.

[0116] The paste mixture was ultrasonically dispersed using an existing ultrasonic cleaning machine to obtain an ultrasonic slurry. The ultrasonic slurry was then dried for a preset drying time to obtain modified antimony tin oxide powder.

[0117] Modified tin oxide antimony powder is ground to obtain refined modified antimony tin powder. The refined modified antimony tin powder is then sieved using a pre-set medium-diameter mesh to obtain a modified antimony tin conductive agent.

[0118] A uniform suspension was obtained based on the alumina matrix sample, the modified antimony-tin conductive agent sample, and the dispersant sample.

[0119] Understandably, the step of obtaining a paste-like mixture based on tin-antimony oxide nanopowder and ethanol solution involves adding tin-antimony oxide nanopowder to an ethanol solution. The tin-antimony oxide nanopowder disperses in the ethanol solution. As more tin-antimony oxide nanopowder is added, the fluidity of the system gradually decreases due to the viscosity of the solution and the interaction between the tin-antimony oxide nanopowder particles, eventually forming a viscous mixture. This viscous mixture is similar to a plaster-glue paste applied to damaged areas of a wall, using its adhesiveness and plasticity to fill pores and smooth the surface. An ultrasonic cleaning machine refers to a device obtained by setting ultrasonic parameters for the ultrasonic cleaning machine. The steps for performing ultrasonic dispersion of the paste mixture using an existing ultrasonic cleaner are as follows: The paste mixture is placed in the cleaning tank of the ultrasonic cleaner, which typically contains a suitable amount of liquid (such as an ethanol solution). When the ultrasonic cleaner is started, the ultrasonic waves it generates propagate in the liquid. Microbubbles generated by cavitation continuously grow and close. The impact force and microjets generated by the intense movement of these bubbles act on the particles in the paste mixture, breaking up the agglomeration between particles and allowing them to be more evenly dispersed in the liquid, thus achieving ultrasonic dispersion of the paste mixture. Ultrasonic slurry refers to the product obtained after ultrasonically dispersing the paste mixture using an existing ultrasonic cleaner.

[0120] It should be explained that the drying time refers to the preset time required to dry the ultrasonic slurry. The purpose of drying is to remove the solvent (such as ethanol) from the ultrasonic slurry, causing the solid components (tin-antimony oxide nanopowder) to form a solid substance. Modified tin-antimony oxide powder refers to the product obtained after drying the ultrasonic slurry using the preset drying time. Grinding the modified tin-antimony oxide powder refers to grinding the modified tin-antimony oxide powder using a grinding machine. For example, the grinding machine is a ball mill, sand mill, etc. Refined modified antimony-tin powder refers to the product obtained after grinding the modified tin-antimony oxide powder. Medium diameter mesh size is a preset mesh size for sieving the refined modified antimony-tin powder. Modified antimony-tin conductive agent refers to the product obtained after sieving the refined modified antimony-tin powder using a preset medium diameter mesh size. Alumina matrix sample refers to a certain mass of sample weighed from ultrafine alumina powder according to the optimal mass ratio. Modified antimony-tin conductive agent sample refers to a certain mass of modified antimony-tin conductive agent weighed according to the optimal mass ratio. A dispersant sample refers to a specific mass of dispersant weighed according to the optimal mass ratio. The function of a dispersant is to reduce the attraction between particles, allowing them to be uniformly dispersed in the solution, preventing particle aggregation, and improving the stability and uniformity of the suspension. Examples of dispersants include sodium polyacrylate and ammonium polyacrylate.

[0121] It should be explained that a homogeneous suspension refers to a suspension obtained by mixing an alumina matrix sample, a modified antimony-tin conductive agent sample, and a dispersant sample. pH adjustment of the homogeneous suspension refers to the operation of adjusting the pH value of the homogeneous suspension to a certain range by adding pH adjusters such as acids or alkalis. A high-speed shear emulsifier is a device that uses the strong shear force generated between a high-speed rotating rotor and stator to achieve functions such as material dispersion, emulsification, and homogenization. Acid-adjusted suspension is a suspension obtained after pH adjustment of the homogeneous suspension. An optimized suspension is a suspension obtained after dispersing and optimizing the acid-adjusted suspension using a high-speed shear emulsifier. Gas ratio refers to the volume or mass ratio of different gases introduced into the furnace during the sintering process. For example, when sintering alumina, to prevent alumina from being oxidized, a mixed gas with nitrogen as the main component (e.g., 95% nitrogen) and a small amount of hydrogen (e.g., 5% hydrogen) is introduced; here, 95% and 5% are the gas ratios. A sintered alumina sample refers to an alumina material sample after the sintering process. The cleaning of the sintered alumina sample refers to immersing the sample in deionized water for preliminary rinsing to remove large particles and loose dust from the surface. The purpose of cleaning the sintered alumina sample is to remove impurities, dust, flux, and other substances that may remain on the sample surface during the sintering process, thereby improving the sample's purity and surface quality. The drying of the cleaned alumina sample refers to drying the sample using drying equipment (oven, vacuum drying oven, etc.) and preset drying parameters. These parameters include the temperature, time, and vacuum level of the drying equipment. The dried alumina sample refers to the sample obtained after drying the cleaned alumina sample.

[0122] It should be explained that the step of obtaining sintered alumina samples according to a preset gas ratio and dried green body in the embodiments of the present invention is to follow the forming method in ceramic sintering preparation, to form antistatic alumina powder into a green body of the required shape and size, and then to perform drying treatment to remove moisture and other impurities. Through the ceramic sintering preparation process, the microstructure of antistatic alumina, such as grain size and porosity, can be precisely controlled, thereby optimizing its antistatic properties and other physical and chemical properties. Antistatic alumina has a low surface resistivity. When static electricity is generated on the surface of antistatic alumina, the charge can be conducted away relatively quickly through the material surface, thereby avoiding the accumulation and discharge of static electricity. In the fields of electronics industry, semiconductor manufacturing, and precision instruments, antistatic alumina can be used to make various components and packaging materials that require antistatic protection to prevent static electricity from damaging products and to ensure the stability of the production process and product quality.

[0123] Specifically, the process of obtaining the dried blank based on optimized suspension, ultrasonic power, and drying time includes:

[0124] The viscosity of the suspension is optimized by detecting ultrasonic power and drying time, and it is determined whether the viscosity of the suspension is within the preset viscosity range.

[0125] If the viscosity of the suspension is not within the preset suspension viscosity range, the suspension viscosity is regarded as abnormal viscosity, the upper limit and lower limit of the suspension viscosity range are obtained, and the abnormal viscosity is compared with the upper limit and the lower limit.

[0126] If the abnormal viscosity is greater than the upper limit of the interval, the dispersant is added to the optimized suspension corresponding to the abnormal viscosity to obtain an updated suspension. The updated suspension is used as the optimized suspension, and the process returns to the step of detecting the suspension viscosity of the optimized suspension until the suspension viscosity is within the suspension viscosity interval.

[0127] If the abnormal viscosity is less than the lower limit of the interval, a pre-constructed thickener is added to the optimized suspension corresponding to the abnormal viscosity to obtain a suboptimal suspension. The suboptimal suspension is then used as the optimized suspension, and the process returns to the step of detecting the suspension viscosity of the optimized suspension until the suspension viscosity is within the suspension viscosity interval.

[0128] If the viscosity of the suspension is within the suspension viscosity range, the pre-built atomizer is calibrated to obtain the calibrated atomizer. The calibrated atomizer is then used to atomize the optimized suspension to obtain an atomized droplet set.

[0129] An inert gas is obtained and introduced into a pre-constructed drying chamber to obtain a pre-set drying chamber. The pre-set drying chamber is then preheated to obtain a suitable drying chamber.

[0130] The atomized liquid droplets are sprayed into a suitable drying chamber to obtain a set of dried spherical particles. The dried spherical particles are then dry-pressed to obtain a dried blank.

[0131] It should be explained that the suspension viscosity range refers to a pre-defined viscosity range to ensure the smooth progress of subsequent processes such as spray drying and dry pressing to obtain a dried green body. The step of dry pressing the dried spherical particle set to obtain a dried green body involves: loading the dried spherical particle set into a mold, applying pressure to the particles in the mold using a press, causing the particles to squeeze and fill each other, forming a green body with a certain density and strength. A press is a type of mechanical equipment widely used in industrial production and material processing. For example, a hydraulic press. A dried green body refers to a green body with a certain shape and strength obtained after processes such as spray drying and dry pressing. Abnormal viscosity refers to the viscosity of the optimized suspension that is not within the preset suspension viscosity range. Renewing the suspension refers to adding a dispersant to the corresponding optimized suspension when the abnormal viscosity exceeds the upper limit of the suspension viscosity range, resulting in a new suspension. A thickener is a substance that can increase the viscosity of a liquid. For example, thickeners include sodium carboxymethyl cellulose and hydroxyethyl cellulose. Suboptimal suspensions refer to suspensions obtained by adding a thickener to the corresponding optimized suspension when the abnormal viscosity is lower than the lower limit of the suspension viscosity range. The upper and lower limits of the range are the maximum and minimum values ​​within the suspension viscosity range, respectively.

[0132] It should be explained that an atomizer is a device that disperses liquid into tiny droplets. The calibrated pre-built atomizer refers to adjusting the feed rate of the atomizer using a flow measurement device (such as a flow meter) to achieve a set flow rate value. A calibrated atomizer is an atomizer obtained after calibration. An atomized droplet set refers to the collection of numerous tiny droplets formed after atomizing an optimized suspension using a calibrated atomizer. An inert gas is a chemically inert gas that does not readily react with other substances. Nitrogen is a commonly used inert gas in spray drying. The main purpose of introducing inert gas into the pre-built drying chamber is to create an oxygen-free or low-oxygen environment to prevent oxidation of the components in the suspension during drying, especially suitable for substances sensitive to oxidation, thereby ensuring the quality and stability of the dried spherical particles. A drying chamber is the location where droplet drying takes place during spray drying. A pre-set drying chamber is the drying chamber obtained after introducing the acquired inert gas. Preheating refers to the operation of raising the internal temperature to a preset drying temperature. The purpose of preheating is to improve drying efficiency, enabling the atomized droplets to rapidly evaporate moisture after entering the drying chamber. A suitable drying chamber refers to a drying chamber where, after preheating, the temperature, gas atmosphere, and other conditions are suitable for drying the atomized droplets. The drying of spherical particles refers to the process of spraying the atomized droplets into the suitable drying chamber, ultimately resulting in a collection of all dried spherical particles.

[0133] In detail, the formula for calculating the viscosity of the suspension is as follows:

[0134] ,

[0135] in, Indicates the viscosity of the suspension. This indicates the preset viscosity of the uniform suspension. Indicates ultrasonic power. This indicates the preset ultrasonic dispersion time. Indicates drying time. This indicates the preset surface area of ​​the modified antimony-tin powder. This indicates the preset pH value of the suspension. Indicates shear rate, This indicates the preset raw material mass ratio. This indicates the preset reference ultrasonic power. This indicates the preset reference ultrasound time. This indicates the preset reference drying time. This indicates the preset reference specific surface area. This indicates the preset reference shear rate.

[0136] It should be explained that the surface area of ​​modified antimony-tin powder refers to the total area per unit mass (or volume) of refined modified antimony-tin powder. The raw material mass ratio refers to the mass ratio between various raw materials when preparing the optimized suspension. The viscosity of the homogeneous suspension refers to the viscosity of the homogeneous suspension. The ultrasonic dispersion time refers to the duration of the ultrasonic dispersion operation. The suspension pH value refers to the pH value of the acid-base adjusted suspension. The reference ultrasonic power, reference ultrasonic time, reference drying time, reference specific surface area, and reference shear rate are all preset values. For example, the reference ultrasonic power is 100W, the reference ultrasonic time is 10 minutes, the reference drying time is 2 hours, the reference specific surface area is 20 m² / g, and the reference shear rate is 100 s⁻¹.

[0137] It should be noted that the formula for calculating the suspension viscosity in the above steps of this invention is based on the viscosity of a uniform suspension. By introducing multiple dimensionless correction factors, it comprehensively reflects the influence of ultrasonic power, ultrasonic dispersion time, drying time, specific surface area of ​​modified antimony-tin powder, suspension pH, shear rate, and raw material mass ratio on the suspension viscosity, achieving quantitative prediction of suspension viscosity. Each correction term reflects the regulatory effect of different process parameters and material properties on particle dispersion, interparticle interactions, and system structure. The aim is to provide a theoretical basis for optimizing suspension viscosity and improving its dispersibility and stability through quantitative analysis of these influencing factors. This provides a quantitative value for the ability to maintain uniform dispersion of components within the system, without significant stratification or solid particle sedimentation, thus providing a stable and reliable process foundation for the subsequent preparation of antistatic alumina ceramics. The formula contains... and These figures reflect the effects of ultrasonic power and ultrasonic dispersion time, respectively. Higher power and longer dispersion time make it easier to break up particle agglomerates, resulting in better dispersion and generally lower viscosity. This indicates that drying time affects the surface state of modified antimony-tin powder, thereby influencing the powder's dispersion behavior and viscosity changes in the suspension. The specific surface area of ​​modified antimony-tin powder plays a crucial role; a larger specific surface area increases the probability of contact and interaction forces between particles, which can easily lead to increased viscosity. The effect of pH on particle surface charge influences suspension stability and viscosity by regulating interparticle repulsion. In the denominator, This reflects the effect of shear rate, aligning with the shear-thinning characteristics of suspensions; a higher shear rate results in lower viscosity. The control of the particle packing state by the ratio of raw material quality indirectly affects viscosity.

[0138] Specifically, the process of obtaining antistatic alumina based on a dried alumina sample includes:

[0139] A plasma activation operation was performed on the dry alumina sample to obtain an activated alumina sample. A conductive coating was then deposited on the activated alumina sample to obtain a deposited alumina sample.

[0140] A set of measurement locations was obtained from the deposited alumina sample. Antistatic properties were measured at each measurement location in the set to obtain a set of surface resistivity values. The average resistivity of the set of surface resistivity values ​​was then calculated.

[0141] Compare the average resistivity with the preset resistivity threshold;

[0142] If the average resistivity is greater than the resistivity threshold, the deposited alumina sample corresponding to the average resistivity is taken as the activated aluminum sample, and the process of depositing a conductive coating on the activated aluminum sample is repeated until the average antistatic value is less than or equal to the preset antistatic threshold.

[0143] If the average resistivity is less than or equal to the resistivity threshold, the deposited alumina sample corresponding to the average resistivity is taken as antistatic alumina.

[0144] It should be explained that activated aluminum sample refers to a dried alumina sample that has undergone plasma activation. For example, in a plasma processing device, plasma is generated by gas discharge, and a dried alumina sample is placed in the processing chamber of the device. The particles in the plasma then activate the surface of the dried alumina sample.

[0145] It is understood that obtaining the measurement location set from the deposited alumina sample refers to randomly determining the measurement locations on the surface of the deposited alumina sample using a random number generator. It should be noted that the measurement locations in this invention are selected randomly rather than uniformly. This is primarily to avoid systematic biases caused by potential local differences in the distribution of the conductive coating on the surface of the deposited alumina sample, ensuring that the obtained surface resistivity values ​​more accurately reflect the antistatic properties of the entire sample surface. Because the plasma activation and conductive coating deposition process may be affected by factors such as the equipment chamber environment, gas flow conditions, and sample placement, the coating thickness or conductivity may exhibit some non-uniformity in the microscopic region. If a uniform sampling method is used, the measurement points may fall precisely into areas with relatively consistent performance, thus failing to fully reflect the true condition of the sample surface. Randomly selecting measurement locations can more effectively cover different areas of the sample surface, reducing biases inherent in the sampling method itself and improving the reliability of the measurement results. Antistatic measurement refers to the operation of measuring using a surface resistivity meter. The surface resistivity value set refers to the collection of all surface resistivity values. The surface resistivity value is a value used to measure the conductivity of the surface of the deposited alumina sample. The mean resistivity refers to the value obtained by arithmetically averaging all surface resistivity values ​​in a set of surface resistivity values. The resistivity threshold is a pre-set value used to determine whether a deposited alumina sample possesses specific antistatic properties. The method for setting the resistivity threshold in this invention is as follows: First, based on the required antistatic performance of the product, determine the target surface resistivity range. For example, referencing commonly used antistatic material standards in industries such as electronics manufacturing, semiconductors, and precision instruments, set the target surface resistivity at 10. 6 Ω / sq up to 10 9 Between Ω / sq, multiple groups of alumina samples with different conductive coating thicknesses were prepared through historical experiments. Their surface resistivity was measured and its distribution was statistically analyzed. Finally, combining practical application requirements with experimental data, a resistivity threshold was selected that ensures stable antistatic performance and meets process window requirements. For example, if experimental data indicates that the surface resistivity is below 5 × 10⁻⁶ Ω / sq, then... 8 If the sample can stably achieve the expected antistatic effect at a resistivity of Ω / sq, then the resistivity threshold can be set to 5×10. 8 Ω / sq. Antistatic alumina refers to deposited alumina samples whose average surface resistivity is less than or equal to a preset resistivity threshold after conductive coating deposition. In this embodiment of the invention, the antistatic alumina is used for ceramic sintering preparation. Ceramic sintering preparation is a process in which ceramic powder is heated at high temperature to cause physical and chemical changes between its particles, thereby forming a dense solid material.

[0146] Specifically, the process of depositing a conductive coating on the activated aluminum sample to obtain a deposited alumina sample includes:

[0147] A sealed chamber was obtained based on a pre-constructed substrate stage and activated aluminum sample. The sealed chamber was then evacuated to obtain a vacuum chamber. The time for evacuating the sealed chamber was taken as the start of the pressure holding time.

[0148] When the pressure holding time is the preset pressure holding time, the vacuum level value of the vacuum chamber is detected and compared with the preset vacuum level threshold.

[0149] If the vacuum level is less than the vacuum level threshold, check the airtightness of the vacuum chamber. If the airtightness is less than the preset airtightness threshold, reseal the vacuum chamber to obtain an optimized vacuum chamber. Use the optimized vacuum chamber as a sealed chamber and return to the step of evacuating the sealed chamber until the vacuum level is greater than or equal to the vacuum level threshold.

[0150] If the vacuum level is greater than or equal to the vacuum threshold, the process gas is obtained, and the process environment is obtained based on the process gas and the vacuum chamber.

[0151] An activated aluminum sample in a process environment is deposited using preset deposition parameters to obtain a deposited alumina sample. The deposition parameters include sputtering power, substrate temperature, and substrate stage rotation speed.

[0152] It should be explained that a substrate stage refers to a device used to fix an activated aluminum sample. A sealed chamber refers to a relatively enclosed space, composed of the substrate stage and other components. The steps for obtaining a sealed chamber based on a pre-constructed substrate stage and activated aluminum sample are as follows: after fixing the activated aluminum sample on the substrate stage, the substrate stage is combined with the chamber body, seals, and other supporting components of the deposition equipment to place the activated aluminum sample in a relatively enclosed space, which is the sealed chamber. The vacuuming process of the sealed chamber refers to using a vacuum pump to evacuate the sealed chamber to a vacuum state. A vacuum chamber refers to the chamber after the sealed chamber has undergone vacuuming. The purpose of the vacuum chamber is to reduce the scattering and collision of gas molecules with the deposited particles in a vacuum environment, allowing the deposited particles to reach the surface of the activated aluminum sample more directly, thereby improving the quality and uniformity of the coating. The holding time refers to the pre-set time for the vacuuming equipment to continue operating. The detection of the vacuum degree value of the vacuum chamber refers to using a vacuum gauge to detect the vacuum degree value of the vacuum chamber. For example, the vacuum gauge is a thermal conductivity vacuum gauge or an ionization vacuum gauge. Vacuum threshold refers to a pre-set standard value for vacuum level. For example, the vacuum threshold is 5 × 10⁻³ Pa. The step of checking the airtightness of the vacuum chamber is as follows: using a helium mass spectrometer leak detector, helium gas is injected around the vacuum chamber. If there is a leak in the chamber, helium gas will enter the chamber, and the leak detector can detect the presence of helium gas and determine the location of the leak. Process gas refers to the specific gas used in the conductive coating deposition process. For example, in sputtering deposition, argon gas is usually used as the sputtering gas. After being ionized, the argon ions generated bombard the target material, causing the target atoms to be sputtered out and deposited on the surface of the activated aluminum sample. Nitrogen and oxygen can be used as reactive gases to react chemically with the sputtered atoms to form the desired compound coating. Process environment refers to the specific environment formed after introducing process gas into a vacuum chamber that has reached a preset vacuum level. The step of depositing activated aluminum samples in the process environment using preset deposition parameters is prior art and will not be described in detail here.

[0153] In this embodiment of the invention, the core of the optimized preparation process steps S1-S9 is used for ceramic sintering. The ceramic sintering preparation process mainly includes the following five steps:

[0154] Step 1: Select appropriate ceramic powder, such as alumina or zirconium oxide, according to the required ceramic properties. Sieve the ceramic powder to remove impurities. Grind the powder using a ball mill or grinding equipment to ensure uniform particle size distribution, usually around 1-10 micrometers.

[0155] Step 2: Mix the ground powder with water, dispersant, etc. to make a slurry, pour it into a plaster mold, and let it dehydrate and solidify to obtain a molded body;

[0156] Step 3: Place the molded blank in a drying oven and dry it with hot air. The temperature is generally controlled between 50℃ and 100℃.

[0157] Step 4: Place the dried green body into the sintering furnace, set the appropriate sintering temperature according to the type of ceramic material, select the sintering gas, set the sintering time, and pre-sinter the dried green body at a certain heating rate (e.g., 5℃ / min) to remove the organic binder and moisture in the green body. Continue to heat to the sintering temperature, hold for a period of time, and slowly cool to room temperature to avoid cracking caused by thermal stress.

[0158] Step 5: Grind and polish the sintered ceramic, then cut and drill it to adjust its size and shape. After coating the surface of the sintered ceramic with a protective film, perform performance tests.

[0159] The first step in ceramic sintering preparation is to remove impurities by sieving to ensure the purity of the ceramic powder, thereby improving the performance of the final product, such as mechanical strength and insulation. Using a ball mill or grinding equipment to grind the powder to a uniform particle size (1-10 micrometers) helps to improve the density and uniformity after sintering, reduce porosity, and enhance the mechanical properties and wear resistance of ceramics. The uniform particle size distribution helps the powder particles to contact and diffuse better during sintering, promotes densification, thereby improving sintering efficiency and shortening sintering time.

[0160] The second step in ceramic sintering preparation involves making powder into a slurry and injecting it into a plaster mold. The resulting green body is then dehydrated and cured, enabling the formation of complex shapes to meet the needs of different applications. The forming process allows for control over the size and shape of the green body, providing a foundation for subsequent processing, reducing the workload of subsequent machining, and improving production efficiency. The formed green body has a certain mechanical strength and can withstand the subsequent drying and sintering processes, reducing the risk of breakage during processing.

[0161] The third step in ceramic sintering preparation is to remove moisture from the green body by hot air drying, which prevents the rapid evaporation of moisture during sintering from causing cracks or pores, thereby improving the density and performance of the ceramic. The dried green body has higher strength and can better withstand the high temperature and mechanical stress in the subsequent sintering process, reducing the risk of deformation or damage. The internal structure of the dried green body is more stable, which helps the sintering process to proceed smoothly and improves sintering efficiency and quality.

[0162] The fourth step in ceramic sintering preparation involves high-temperature sintering, which causes diffusion, recrystallization, and grain growth between ceramic particles, gradually densifying the green body and increasing its density and strength. The sintering process can optimize the microstructure of ceramics, improving their hardness, wear resistance, corrosion resistance, and other properties to meet the requirements of specific applications. In the pre-sintering stage, organic binders and moisture in the green body are removed to prevent these impurities from decomposing and causing defects at high temperatures. Slow cooling to room temperature can effectively reduce thermal stress, prevent cracks or ruptures in ceramics caused by thermal stress, and improve the product qualification rate.

[0163] The fifth step in ceramic sintering preparation involves grinding and polishing to improve the flatness and smoothness of the ceramic surface, reduce surface defects, and improve the appearance quality and surface performance of the product. Through machining such as cutting and drilling, the size and shape of the ceramic can be precisely adjusted to meet the precision requirements of different applications. Coating the ceramic surface with a protective film can prevent it from being worn, corroded, or oxidized during use, extending the product's service life. At the same time, through performance testing, it can be ensured that the sintered ceramic product meets the design requirements and satisfies the mechanical, electrical, and thermal performance indicators in practical applications, thereby improving the reliability and consistency of the product.

[0164] Key point: The first step in the ceramic sintering preparation described in this invention, "obtaining ultrafine alumina powder based on high-purity alumina powder", involves "selecting appropriate ceramic powder according to the required ceramic properties, sieving the ceramic powder to remove impurities, and grinding the powder using a ball mill or grinding equipment to ensure uniform particle size distribution, typically with a particle size of 1-10 micrometers", to ensure the purity and particle size distribution of the powder.

[0165] The key point is that the "obtaining a dried green body based on optimized suspension, ultrasonic power and drying time" described in this invention is applied to the second step of ceramic sintering preparation: "mixing the ground powder with water, dispersant and other ingredients to form a slurry, injecting it into a plaster mold, allowing it to dehydrate and solidify to obtain a shaped green body". This improves the forming quality, green body strength, drying efficiency, sintering performance and surface quality in ceramic sintering preparation, while shortening the production cycle.

[0166] Importantly, the "drying of clean alumina samples to obtain dry alumina samples" described in this invention is applied to the third step of ceramic sintering preparation, "drying the shaped green body in a drying oven with hot air," to improve the accuracy, reliability, and quality control level of performance testing in ceramic sintering preparation, optimize the sintering process, and improve the product qualification rate and market competitiveness.

[0167] Importantly, the "obtaining sintered alumina samples according to the preset gas ratio and dried green body" described in this invention is applied to the fourth step of ceramic sintering preparation: "placing the dried green body in the sintering furnace, setting an appropriate sintering temperature according to the type of ceramic material, selecting the sintering gas, and setting the sintering time." This allows for precise control of the sintering atmosphere, which can better meet the performance requirements of different applications for ceramic materials and improve the overall quality and added value of the product.

[0168] To address the problems described in the background art, this invention identifies high-purity alumina powder, places it in a pre-constructed crucible to obtain alumina powder to be heated, and continuously heats the alumina powder, recording the starting time of heating in real time to obtain the start heating time. This invention's high-purity alumina powder avoids impurities affecting the structural uniformity and performance stability of ceramics. Precise control of the calcination time allows the alumina powder to complete crystal transformation and initial particle sintering, improving the crystallinity of the powder and reducing the difficulty of subsequent grinding processes. When the start heating time equals the preset calcination time, continuous heating of the alumina powder is stopped, resulting in calcined alumina powder. The preparation of calcined alumina powder... The present invention utilizes a grinding media liquid adapted to the characteristics of calcined alumina powder to improve particle dispersibility during subsequent grinding, prevent powder agglomeration, and ensure uniform particle size of alumina particles after grinding. An ultrafine alumina suspension is obtained based on the grinding media liquid and calcined alumina powder. This ultrafine alumina suspension is then dried to obtain ultrafine alumina powder. The ultrafine alumina powder of the present invention has a smaller particle size and larger specific surface area, which can improve the density of the ceramic body, reduce the porosity after sintering, and thus improve the uniformity of the mechanical and antistatic properties of the alumina ceramic. The invention also obtains initial mass ratio groups, alumina powder mass ratio ranges, conductive agent mass ratio ranges, dispersant mass ratio ranges, and a modified antimony-tin conductive agent. The modified antimony-tin conductive agent of the present invention possesses superior properties. The alumina exhibits superior conductivity and chemical stability, making it a core antistatic functional component in ceramics. Initial mass ratios are extracted sequentially from the initial mass ratio group. Based on the extracted initial mass ratios, alumina powder mass ratio ranges, conductive agent mass ratio ranges, and dispersant mass ratio ranges, alumina powder samples, conductive agent samples, and dispersant samples are obtained. An initial suspension is then prepared based on these samples, and the initial viscosity, initial conductivity, and initial stability of the initial suspension are measured. This invention, by preparing an initial suspension, can simulate the subsequent preparation system of antistatic alumina, providing a basic sample for performance testing. The initial viscosity, initial conductivity, and initial stability are summarized to obtain initial viscosity groups, initial conductivity groups, and initial stability groups. Mathematical models were established based on initial viscosity, initial conductivity, and initial stability groups. These models were then optimized using a pre-constructed response methodology to obtain the optimal mass ratio. This invention's response methodology enables synergistic optimization of multiple factors and objectives. By fitting the influence of each raw material ratio on the suspension's performance through the mathematical model, the optimal mass ratio that balances viscosity, conductivity, and stability can be quickly selected. Compared to traditional single-factor experimental methods, this significantly shortens the optimization cycle while ensuring the scientific validity and reliability of the optimal mass ratio. Using ultrafine alumina powder, the optimal mass ratio, and modified antimony-tin conductive agent, samples of alumina matrix, modified antimony-tin conductive agent, and dispersant were weighed. This invention, based on the optimal mass ratio, ensures that the synergistic effect of each component is maximized.Antistatic alumina was obtained based on alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples. Antistatic alumina ceramics were then prepared based on this antistatic alumina. Therefore, this invention can improve the antistatic properties of antistatic alumina.

[0169] like Figure 2 The diagram shown is a functional block diagram of an antistatic alumina ceramic and its preparation system provided in an embodiment of the present invention.

[0170] The antistatic alumina ceramic preparation system 100 of this invention can be installed in an electronic device. Depending on the functions implemented, the antistatic alumina ceramic preparation system 100 may include an ultrafine alumina powder preparation module 101, an initial suspension acquisition module 102, a mass ratio optimization module 103, and an alumina ceramic preparation module 104. The module described in this invention can also be called a unit, referring to a series of computer program segments that can be executed by the processor of an electronic device and perform a fixed function, stored in the memory of the electronic device.

[0171] The ultrafine alumina powder preparation module 101 is used to identify high-purity alumina powder, place the high-purity alumina powder in a pre-constructed crucible to obtain alumina powder to be heated, continuously heat the alumina powder to be heated, and record the start time of heating the alumina powder to be heated in real time as the starting time to obtain the start heating time. When the start heating time is equal to the preset calcination time, the continuous heating of the alumina powder to be heated is stopped to obtain calcined alumina powder. Grinding medium liquid is prepared based on the calcined alumina powder, and an ultrafine alumina suspension is obtained based on the grinding medium liquid and the calcined alumina powder. The ultrafine alumina suspension is dried to obtain ultrafine alumina powder.

[0172] The initial suspension acquisition module 102 is used to acquire an initial mass ratio group, an alumina powder mass ratio range, a conductive agent mass ratio range, a dispersant mass ratio range, and a modified antimony-tin conductive agent. It sequentially extracts the initial mass ratio from the initial mass ratio group, acquires alumina powder samples, conductive agent samples, and dispersant samples based on the extracted initial mass ratio, alumina powder mass ratio range, conductive agent mass ratio range, and dispersant mass ratio range, acquires an initial suspension based on the alumina powder samples, conductive agent samples, and dispersant samples, and detects the initial viscosity, initial conductivity, and initial stability of the initial suspension.

[0173] The mass ratio optimization module 103 is used to summarize the initial viscosity, initial conductivity and initial stability respectively to obtain the initial viscosity group, initial conductivity group and initial stability group. A mathematical model is established based on the initial viscosity group, initial conductivity group and initial stability group. The mathematical model is optimized using a pre-built response methodology to obtain the optimal mass ratio.

[0174] The alumina ceramic preparation module 104 is used to weigh alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples using ultrafine alumina powder, the optimal mass ratio, and modified antimony-tin conductive agent; obtain antistatic alumina based on the alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples; and prepare antistatic alumina ceramics based on the antistatic alumina.

[0175] In detail, the modules in the antistatic alumina ceramic and its preparation system 100 described in this embodiment of the invention employ the same methods as described above during use. Figure 1 The same technical means are used in the preparation method of antistatic alumina ceramics described in the article, and the same technical effects can be produced, so it will not be repeated here.

[0176] like Figure 3 The diagram shown is a schematic representation of an electronic device for implementing an antistatic alumina ceramic preparation method according to an embodiment of the present invention.

[0177] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as a method program for preparing antistatic alumina ceramics.

[0178] The memory 11 includes at least one type of readable storage medium, such as flash memory, portable hard drive, multimedia card, card-type memory (e.g., SD or DX memory), magnetic memory, disk, optical disk, etc. In some embodiments, the memory 11 can be an internal storage unit of the electronic device 1, such as a portable hard drive. In other embodiments, the memory 11 can be an external storage device of the electronic device 1, such as a plug-in portable hard drive, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the electronic device 1. Furthermore, the memory 11 includes both internal storage units and external storage devices of the electronic device 1. The memory 11 can be used not only to store application software and various types of data installed on the electronic device 1, such as the code of the antistatic alumina ceramic preparation method program, but also to temporarily store data that has been output or will be output.

[0179] In some embodiments, the processor 10 may be composed of integrated circuits, such as a single packaged integrated circuit or multiple integrated circuits with the same or different functions, including combinations of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips. The processor 10 is the control unit of the electronic device, connecting various components of the entire electronic device through various interfaces and lines. It executes programs or modules (such as antistatic alumina ceramic preparation method programs) stored in the memory 11, and calls data stored in the memory 11 to perform various functions of the electronic device 1 and process data.

[0180] The bus 12 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 can be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to realize the connection and communication between the memory 11 and at least one processor 10, etc.

[0181] Figure 3 Only electronic devices with components are shown; it will be understood by those skilled in the art that... Figure 3 The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown, or combine certain components, or have different component arrangements.

[0182] For example, although not shown, the electronic device 1 may also include a power supply (such as a battery) to power the various components. Preferably, the power supply can be logically connected to the at least one processor 10 through a power management device, thereby enabling functions such as charging management, discharging management, and power consumption management. The power supply may also include one or more DC or AC power supplies, recharging devices, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components. The electronic device 1 may also include various sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be described in detail here.

[0183] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a Wi-Fi interface, a Bluetooth interface, etc.), which is typically used to establish communication connections between the electronic device 1 and other electronic devices.

[0184] Optionally, the electronic device 1 may further include a user interface, which may be a display, an input unit (such as a keyboard), and optionally, a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen, etc. The display may also be appropriately referred to as a screen or display unit, used to display information processed in the electronic device 1 and to display a visual user interface.

[0185] The antistatic alumina ceramic preparation method program stored in the memory 11 of the electronic device 1 is a combination of multiple instructions, which, when run in the processor 10, can achieve the following:

[0186] Once high-purity alumina powder is identified, it is placed in a pre-constructed crucible to obtain alumina powder to be heated. The alumina powder to be heated is continuously heated, and the time is recorded in real time from the start time of heating to obtain the start time of heating.

[0187] When the initial heating time equals the preset calcination time, the continuous heating of the alumina powder to be heated is stopped to obtain calcined alumina powder, and grinding media liquid is prepared based on the calcined alumina powder;

[0188] An ultrafine alumina suspension is obtained by grinding media liquid and calcined alumina powder, and the ultrafine alumina suspension is dried to obtain ultrafine alumina powder.

[0189] Obtain the initial mass ratio group, alumina powder mass ratio range, conductive agent mass ratio range, dispersant mass ratio range, and modified antimony-tin conductive agent;

[0190] Initial mass ratios were extracted sequentially from the initial mass ratio group. Based on the extracted initial mass ratios, alumina powder mass ratio ranges, conductive agent mass ratio ranges, and dispersant mass ratio ranges, alumina powder samples, conductive agent samples, and dispersant samples were obtained.

[0191] Initial suspensions were obtained from alumina powder samples, conductive agent samples, and dispersant samples. The initial viscosity, initial conductivity, and initial stability of the initial suspensions were then tested.

[0192] The initial viscosity, initial conductivity, and initial stability were summarized separately to obtain the initial viscosity group, initial conductivity group, and initial stability group;

[0193] A mathematical model is established based on the initial viscosity set, initial conductivity set, and initial stability set. The mathematical model is then optimized using a pre-constructed response methodology to obtain the optimal mass ratio.

[0194] Using ultrafine alumina powder, the optimal mass ratio, and a modified antimony-tin conductive agent, samples of alumina matrix, modified antimony-tin conductive agent, and dispersant were weighed. Based on the alumina matrix, modified antimony-tin conductive agent, and dispersant samples, antistatic alumina was obtained, and antistatic alumina ceramics were prepared based on the antistatic alumina.

[0195] Specifically, the processor 10's implementation method for the above instructions can be found in [reference needed]. Figures 1 to 3 The descriptions of the relevant steps in the corresponding embodiments are not repeated here.

[0196] Furthermore, if the modules / units integrated in the electronic device 1 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, or a read-only memory (ROM).

[0197] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor of an electronic device, can perform the following:

[0198] Once high-purity alumina powder is identified, it is placed in a pre-constructed crucible to obtain alumina powder to be heated. The alumina powder to be heated is continuously heated, and the time is recorded in real time from the start time of heating to obtain the start time of heating.

[0199] When the initial heating time equals the preset calcination time, the continuous heating of the alumina powder to be heated is stopped to obtain calcined alumina powder, and grinding media liquid is prepared based on the calcined alumina powder;

[0200] An ultrafine alumina suspension is obtained by grinding media liquid and calcined alumina powder, and the ultrafine alumina suspension is dried to obtain ultrafine alumina powder.

[0201] Obtain the initial mass ratio group, alumina powder mass ratio range, conductive agent mass ratio range, dispersant mass ratio range, and modified antimony-tin conductive agent;

[0202] Initial mass ratios were extracted sequentially from the initial mass ratio group. Based on the extracted initial mass ratios, alumina powder mass ratio ranges, conductive agent mass ratio ranges, and dispersant mass ratio ranges, alumina powder samples, conductive agent samples, and dispersant samples were obtained.

[0203] Initial suspensions were obtained from alumina powder samples, conductive agent samples, and dispersant samples. The initial viscosity, initial conductivity, and initial stability of the initial suspensions were then tested.

[0204] The initial viscosity, initial conductivity, and initial stability were summarized separately to obtain the initial viscosity group, initial conductivity group, and initial stability group;

[0205] A mathematical model is established based on the initial viscosity set, initial conductivity set, and initial stability set. The mathematical model is then optimized using a pre-constructed response methodology to obtain the optimal mass ratio.

[0206] Using ultrafine alumina powder, the optimal mass ratio, and a modified antimony-tin conductive agent, samples of alumina matrix, modified antimony-tin conductive agent, and dispersant were weighed. Based on the alumina matrix, modified antimony-tin conductive agent, and dispersant samples, antistatic alumina was obtained, and antistatic alumina ceramics were prepared based on the antistatic alumina.

[0207] In the embodiments provided by this invention, it should be understood that the disclosed devices, systems, and methods can be implemented in other ways. For example, the system embodiments described above are merely illustrative, and actual implementations may have other classification methods.

[0208] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0209] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional modules.

[0210] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0211] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for preparing antistatic alumina ceramic, characterized in that, The method includes: Once high-purity alumina powder is identified, it is placed in a pre-constructed crucible to obtain alumina powder to be heated. The alumina powder to be heated is continuously heated, and the time is recorded in real time from the start time of heating to obtain the start time of heating. When the initial heating time equals the preset calcination time, the continuous heating of the alumina powder to be heated is stopped to obtain calcined alumina powder, and grinding media liquid is prepared based on the calcined alumina powder; An ultrafine alumina suspension is obtained by grinding media liquid and calcined alumina powder, and the ultrafine alumina suspension is dried to obtain ultrafine alumina powder. Obtain the initial mass ratio group, alumina powder mass ratio range, conductive agent mass ratio range, dispersant mass ratio range, and modified antimony-tin conductive agent; Initial mass ratios were extracted sequentially from the initial mass ratio group. Based on the extracted initial mass ratios, alumina powder mass ratio ranges, conductive agent mass ratio ranges, and dispersant mass ratio ranges, alumina powder samples, conductive agent samples, and dispersant samples were obtained. Initial suspensions were obtained from alumina powder samples, conductive agent samples, and dispersant samples. The initial viscosity, initial conductivity, and initial stability of the initial suspensions were then tested. The initial viscosity, initial conductivity, and initial stability were summarized separately to obtain the initial viscosity group, initial conductivity group, and initial stability group; A mathematical model is established based on the initial viscosity set, initial conductivity set, and initial stability set. The mathematical model is then optimized using a pre-constructed response methodology to obtain the optimal mass ratio. Using ultrafine alumina powder, the optimal mass ratio, and a modified antimony-tin conductive agent, samples of alumina matrix, modified antimony-tin conductive agent, and dispersant were weighed. Based on the alumina matrix, modified antimony-tin conductive agent, and dispersant samples, antistatic alumina was obtained, and antistatic alumina ceramics were prepared based on the antistatic alumina.

2. The method for preparing antistatic alumina ceramics as described in claim 1, characterized in that, The process of obtaining the initial mass ratio group, the alumina powder mass ratio range, the conductive agent mass ratio range, the dispersant mass ratio range, and the modified antimony-tin conductive agent includes: Anhydrous ethanol, tin antimony oxide nanoparticles and silane coupling agent were obtained. The silane coupling agent was dissolved in anhydrous ethanol and stirred to obtain an ethanol solution. Modified antimony-tin conductive agent was obtained based on ultrafine alumina powder, tin-antimony oxide nanopowder and ethanol solution. The mass ratio range of alumina powder, the mass ratio range of conductive agent and the mass ratio range of dispersant were obtained based on ultrafine alumina powder, modified antimony-tin conductive agent and pre-constructed dispersant. Construct an experimental matrix and obtain the initial mass ratio group based on the experimental matrix.

3. The method for preparing antistatic alumina ceramics as described in claim 2, characterized in that, The mathematical model established based on the initial viscosity set, initial conductivity set, and initial stability set includes: Initial viscosity is extracted sequentially from the initial viscosity group, and the target initial conductivity and target initial stability corresponding to the initial viscosity are confirmed from the initial conductivity group and the initial stability group based on the initial viscosity. Based on the initial viscosity, target initial conductivity, and target initial stability, the target alumina powder sample mass, target conductive agent sample mass, and target dispersant sample mass corresponding to the initial mass ratio were determined. The conductivity interaction coefficient of aluminum powder is obtained based on the sample mass of the target alumina powder and the sample mass of the target conductive agent; the conductivity interaction coefficient of aluminum powder is obtained based on the sample mass of the target alumina powder and the sample mass of the target dispersant; and the conductivity interaction coefficient of conductive agent is obtained based on the sample mass of the target dispersant and the sample mass of the target conductive agent. The interaction coefficients of aluminum powder conductivity, aluminum powder dispersant, and conductive dispersant were summarized to obtain the groups of aluminum powder conductivity interaction coefficients, aluminum powder dispersant interaction coefficients, and conductive dispersant interaction coefficients, respectively. A mathematical model is constructed based on the interaction coefficients of aluminum powder conductivity, aluminum powder dispersant, and conductive dispersant, as described below: ， in, Representing a mathematical model, Represents a constant term. This represents the linear coefficient of the preset alumina powder sample. Indicates the mass of the target alumina powder sample. This represents the linear coefficient of a preset conductive agent sample. Indicates the quality of the target conductive agent sample. This represents the linear coefficient of the preset dispersant sample. Indicates the sample quality of the target dispersant. This represents the quadratic linear coefficient of the preset alumina powder sample. This represents the quadratic linear coefficient of the preset conductive agent sample. This represents the quadratic linear coefficient of the preset dispersant sample. Indicates the first The aluminum powder conductivity interaction coefficient in the group of aluminum powder conductivity interaction coefficients Indicates the first The interaction coefficients of aluminum powder dispersants in the group of aluminum powder dispersant interaction coefficients Indicates the first The conductive dispersant interaction coefficients in the group of conductive dispersant interaction coefficients This indicates the preset error term.

4. The method for preparing antistatic alumina ceramics as described in claim 3, characterized in that, The method for obtaining antistatic alumina based on alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples includes: Based on alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples, a uniform suspension, ultrasonic power, and drying time were obtained. The pH of the uniform suspension was adjusted to obtain an acid-base conditioned suspension. The acid-base conditioned suspension was then dispersed and optimized using a pre-constructed high-speed shear emulsifier to obtain an optimized suspension. The shear rate was preset in the high-speed shear emulsifier. A dried blank is obtained by optimizing the suspension, ultrasonic power and drying time. A sintered alumina sample is obtained according to the preset gas ratio and the dried blank. The sintered alumina sample is then cleaned to obtain a clean alumina sample. The clean alumina sample was dried to obtain a dried alumina sample, and antistatic alumina was obtained based on the dried alumina sample.

5. The method for preparing antistatic alumina ceramics as described in claim 4, characterized in that, The process of obtaining the dried blank based on optimized suspension, ultrasonic power, and drying time includes: The viscosity of the suspension is optimized by detecting ultrasonic power and drying time, and it is determined whether the viscosity of the suspension is within the preset viscosity range. If the viscosity of the suspension is not within the preset suspension viscosity range, the suspension viscosity is regarded as abnormal viscosity, the upper limit and lower limit of the suspension viscosity range are obtained, and the abnormal viscosity is compared with the upper limit and the lower limit. If the abnormal viscosity is greater than the upper limit of the interval, the dispersant is added to the optimized suspension corresponding to the abnormal viscosity to obtain an updated suspension. The updated suspension is used as the optimized suspension, and the process returns to the step of detecting the suspension viscosity of the optimized suspension until the suspension viscosity is within the suspension viscosity interval. If the abnormal viscosity is less than the lower limit of the interval, a pre-constructed thickener is added to the optimized suspension corresponding to the abnormal viscosity to obtain a suboptimal suspension. The suboptimal suspension is then used as the optimized suspension, and the process returns to the step of detecting the suspension viscosity of the optimized suspension until the suspension viscosity is within the suspension viscosity interval. If the viscosity of the suspension is within the suspension viscosity range, the pre-built atomizer is calibrated to obtain the calibrated atomizer. The calibrated atomizer is then used to atomize the optimized suspension to obtain an atomized droplet set. An inert gas is obtained and introduced into a pre-constructed drying chamber to obtain a pre-set drying chamber. The pre-set drying chamber is then preheated to obtain a suitable drying chamber. The atomized liquid droplets are sprayed into a suitable drying chamber to obtain a set of dried spherical particles. The dried spherical particles are then dry-pressed to obtain a dried blank.

6. The method for preparing antistatic alumina ceramic as described in claim 5, characterized in that, The formula for calculating the viscosity of the suspension is as follows: ， in, Indicates the viscosity of the suspension. This indicates the preset viscosity of the uniform suspension. Indicates ultrasonic power. This indicates the preset ultrasonic dispersion time. Indicates drying time. This indicates the preset surface area of ​​the modified antimony-tin powder. This indicates the preset pH value of the suspension. Indicates shear rate, This indicates the preset raw material mass ratio. This indicates the preset reference ultrasonic power. This indicates the preset reference ultrasound time. This indicates the preset reference drying time. This indicates the preset reference specific surface area. This indicates the preset reference shear rate.

7. The method for preparing antistatic alumina ceramics as described in claim 6, characterized in that, The method for obtaining antistatic alumina based on dried alumina samples includes: A plasma activation operation was performed on the dry alumina sample to obtain an activated alumina sample. A conductive coating was then deposited on the activated alumina sample to obtain a deposited alumina sample. A set of measurement locations was obtained from the deposited alumina sample. Antistatic properties were measured at each measurement location in the set to obtain a set of surface resistivity values. The average resistivity of the set of surface resistivity values ​​was then calculated. Compare the average resistivity with the preset resistivity threshold; If the average resistivity is greater than the resistivity threshold, the deposited alumina sample corresponding to the average resistivity is taken as the activated aluminum sample, and the process of depositing a conductive coating on the activated aluminum sample is repeated until the average antistatic value is less than or equal to the preset antistatic threshold. If the average resistivity is less than or equal to the resistivity threshold, the deposited alumina sample corresponding to the average resistivity is taken as antistatic alumina.

8. The method for preparing antistatic alumina ceramics as described in claim 7, characterized in that, The process of depositing a conductive coating on an activated aluminum sample to obtain a deposited alumina sample includes: A sealed chamber was obtained based on a pre-constructed substrate stage and activated aluminum sample. The sealed chamber was then evacuated to obtain a vacuum chamber. The time for evacuating the sealed chamber was taken as the start of the pressure holding time. When the pressure holding time is the preset pressure holding time, the vacuum level value of the vacuum chamber is detected and compared with the preset vacuum level threshold. If the vacuum level is less than the vacuum level threshold, check the airtightness of the vacuum chamber. If the airtightness is less than the preset airtightness threshold, reseal the vacuum chamber to obtain an optimized vacuum chamber. Use the optimized vacuum chamber as a sealed chamber and return to the step of evacuating the sealed chamber until the vacuum level is greater than or equal to the vacuum level threshold. If the vacuum level is greater than or equal to the vacuum threshold, the process gas is obtained, and the process environment is obtained based on the process gas and the vacuum chamber. An activated aluminum sample in a process environment is deposited using preset deposition parameters to obtain a deposited alumina sample. The deposition parameters include sputtering power, substrate temperature, and substrate stage rotation speed.

9. An antistatic alumina ceramic prepared according to any one of claims 1 to 8, characterized in that, include: The antistatic alumina ceramic contains the following elemental mass percentage distribution: oxygen 34.99%, aluminum 45.59%, titanium 2.69%, silicon 3.96%, iron 1.46%, and molybdenum 11.31%.

10. An antistatic alumina ceramic and its preparation system, characterized in that, The system includes: The ultrafine alumina powder preparation module is used to identify high-purity alumina powder, place the high-purity alumina powder in a pre-constructed crucible to obtain alumina powder to be heated, continuously heat the alumina powder to be heated, and record the start time of heating the alumina powder to be heated in real time as the starting time to obtain the start heating time. When the start heating time is equal to the preset calcination time, the continuous heating of the alumina powder to be heated is stopped to obtain calcined alumina powder. Grinding media liquid is prepared based on the calcined alumina powder, and an ultrafine alumina suspension is obtained based on the grinding media liquid and calcined alumina powder. The ultrafine alumina suspension is dried to obtain ultrafine alumina powder. The initial suspension acquisition module is used to acquire initial mass ratio groups, alumina powder mass ratio ranges, conductive agent mass ratio ranges, dispersant mass ratio ranges, and modified antimony-tin conductive agent. It sequentially extracts the initial mass ratio from the initial mass ratio group, and acquires alumina powder samples, conductive agent samples, and dispersant samples based on the extracted initial mass ratios, alumina powder mass ratio ranges, conductive agent mass ratio ranges, and dispersant mass ratio ranges. It then acquires the initial suspension based on the alumina powder samples, conductive agent samples, and dispersant samples, and detects the initial viscosity, initial conductivity, and initial stability of the initial suspension. The mass ratio optimization module is used to summarize the initial viscosity, initial conductivity, and initial stability to obtain the initial viscosity group, initial conductivity group, and initial stability group. Based on the initial viscosity group, initial conductivity group, and initial stability group, a mathematical model is established. The mathematical model is optimized using a pre-built response methodology to obtain the optimal mass ratio. The alumina ceramic preparation module is used to weigh alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples using ultrafine alumina powder, the optimal mass ratio, and modified antimony-tin conductive agent. Based on the alumina matrix samples, modified antimony-tin conductive agent samples, and dispersant samples, antistatic alumina is obtained, and antistatic alumina ceramics are prepared based on the antistatic alumina.

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