Surface treatment method and ceramic atomizing core

Abstract

The invention belongs to the technical field of ceramic materials, and relates to a surface treatment method and a ceramic atomization core, the surface treatment method comprises the following steps: preparing a surface treatment liquid, the surface treatment liquid comprises a surfactant; the ceramic atomization core is placed in the surface treatment liquid to be subjected to soaking treatment; and the soaked ceramic atomization core is taken out to be dried, and finally the ceramic atomization core with the surface treated is obtained. According to the technical scheme, the problem that due to silicon migration, the oil guide speed is reduced, and then core pasting is caused can be effectively solved, meanwhile, the contact area between silica gel and the ceramic atomization core does not need to be reduced, and the oil leakage risk is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of ceramic materials, and more specifically, to a surface treatment method and a ceramic atomizing core. Background Art

[0002] With the rapid development of the e-cigarette industry, the performance of ceramic atomizer cores, as core components of e-cigarettes, directly affects the user experience. Ceramic atomizer cores are mainly made of porous ceramic materials and have a large number of micropores inside for storing and transporting e-liquid.

[0003] At present, the common ceramic atomizer cores on the market are mainly made of materials such as aluminum oxide and silicon dioxide. CN116217269B discloses a porous ceramic, a modifying liquid for modifying the inner surface of a porous ceramic, and its preparation method and application. The porous ceramic has a plurality of open pores and a plurality of closed pores, and the surface of the open pores at least partially has a silicon dioxide layer, which can effectively improve the oil conduction rate of the porous ceramic, improve its oil supply capacity, and thus improve the smoke volume and atomization thermal efficiency of the ceramic atomizer core. CN116548677A discloses a ceramic atomizer core and its processing and preparation method. By placing the ceramic atomizer core in an alkaline solution for treatment, the surface roughness is controlled, the oil conduction rate is improved, and the functional groups on the surface of the ceramic substrate are improved, the surface polarity is increased, and the wettability of the ceramic atomizer core to the smoke oil is optimized. CN115368162A discloses a method for preparing a porous ceramic atomizer core with three-dimensional interconnected pores. The porous ceramic atomizer core prepared by this method has three pores of different sizes, which are interconnected, so that it has a large oil storage capacity and a fast oil absorption rate, and has good shape stability after oil absorption. CN113292354A discloses a porous ceramic atomizer core and a method for preparing it. This method is to soak the porous ceramic in an organic solution of substances such as silicone, trimethylaluminum or diethylzinc, and then perform in-situ hydrolysis reaction and sintering to obtain a porous ceramic atomizer core with a surface covered with a nanoparticle layer, which can achieve effective penetration of tobacco oil and increase the atomization volume of electronic cigarettes. CN111792922A discloses a high-reduction porous ceramic atomizer core and a method for preparing it. The ceramic atomizer core prepared by this method through a specific formula and process has a reasonable mist particle size, and the mist beads after atomization are full and delicate, so that the atomized liquid has a high degree of flavor reduction.

[0004] However, existing ceramic atomizer cores still present some issues during use. This is primarily due to the fact that during the manufacturing process, a certain amount of silicon compounds often remain on the surface of the ceramic atomizer core. These silicon compounds migrate during use, causing the ceramic atomizer core's oil transfer speed to gradually slow down, ultimately leading to a "core burn" phenomenon. This means that the atomizer core is unable to transport the e-liquid to the heating area in a timely manner, causing the heating wire to burn dry, which not only affects the user experience but also produces a burnt odor. Furthermore, silicon migration increases the risk of oil leakage in the e-cigarette device, affecting product yield.

[0005] At present, the solution to the problem of silicon migration in ceramic atomizer cores mainly focuses on improving the preparation process of ceramic materials, such as adjusting the raw material ratio, optimizing sintering conditions, etc. However, these methods often require high technical barriers and equipment investment, and the effect is limited. Summary of the Invention

[0006] The purpose of this application is to provide a surface treatment method and a ceramic atomizer core to solve the technical problem in the prior art that silicon migration causes the oil conduction speed to slow down and the core to become sticky.

[0007] In order to solve the above technical problems, the present invention provides a surface treatment method using the following technical solutions:

[0008] preparing a surface treatment liquid, wherein the surface treatment liquid comprises a surfactant;

[0009] placing the ceramic atomizing core in the surface treatment liquid for soaking treatment;

[0010] The ceramic atomizer core after the immersion treatment is taken out and dried to finally obtain a ceramic atomizer core after surface treatment.

[0011] Furthermore, the surfactant is one or more combinations of glycerol fatty acid ester, sucrose fatty acid ester, soybean lecithin, sucrose acetate isobutyrate, sodium caseinate, polyoxypropylene glycerol ether, and sorbitol.

[0012] Furthermore, the surface treatment liquid is a dilution liquid with a mass concentration of 1-5%.

[0013] Furthermore, the soaking treatment time is 2 to 10 minutes.

[0014] Furthermore, the drying temperature of the drying treatment is 60-150° C., and the drying time is 1-3 hours.

[0015] Furthermore, the step of preparing the surface treatment liquid includes:

[0016] A first mass of a surfactant and a second mass of a solvent are weighed according to a formula, and the surfactant is added into the solvent for dilution to obtain a surface treatment liquid.

[0017] Furthermore, the solvent is selected from one or more of ethanol, deionized water, and glycerol.

[0018] Furthermore, before the step of placing the ceramic atomizing core in the surface treatment liquid for soaking treatment, the method further comprises:

[0019] The ceramic atomizing core is cleaned with an ion solution.

[0020] Furthermore, the ion solution includes one or more of a sodium chloride solution, a magnesium chloride solution and an ammonium chloride solution.

[0021] In order to solve the above technical problems, an embodiment of the present application further provides a ceramic atomizer core, which is surface-treated using the surface treatment method described above.

[0022] Compared with the prior art, this application has the following beneficial effects:

[0023] This application uses a surface treatment liquid to treat the ceramic atomizer core, effectively solving the problem of slow oil conduction speed and subsequent core sticking caused by silicon migration. This application does not need to reduce the contact area between the silicone and the ceramic atomizer core, does not affect the sealing, and reduces the risk of oil leakage. In addition, the surface treatment method used in this application is simple to operate and has a stable process. It can significantly improve product yield and enhance user experience. By soaking in a specific surface treatment liquid and drying under specific conditions, a protective layer is formed on the surface of the ceramic atomizer core, which effectively prevents the occurrence of silicon migration and ensures the normal performance of the smoking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the solutions in this application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 Flowchart of one embodiment of the surface treatment method according to the present application. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0027] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0029] See also Figure 1 As shown, the embodiment of the present application provides a surface treatment method, comprising the following steps:

[0030] Step S10, preparing a surface treatment liquid, wherein the surface treatment liquid contains a surfactant;

[0031] Step S20, placing the ceramic atomizing core in a surface treatment liquid for immersion treatment;

[0032] Step S30: taking out the ceramic atomizer core after the immersion treatment and performing a drying treatment to obtain a surface-treated ceramic atomizer core.

[0033] The ceramic atomization core surface treatment method adopted in this application is simple to operate and has a stable process, which can significantly improve product yield and enhance user experience.

[0034] In some embodiments, the surfactant can be selected from one or more combinations of glycerol fatty acid esters, sucrose fatty acid esters, soybean lecithin, sucrose acetate isobutyrate, sodium caseinate, polyoxypropylene glycerol ether, and sorbitol.

[0035] The above surfactants are all food-grade surfactants, harmless, and can reduce the surface tension of silicone oil and increase the oil conduction speed.

[0036] In some embodiments, the surface treatment liquid is a dilution liquid with a mass concentration of 1-5%. Specifically, the surface treatment liquid has a mass concentration of any one of 1%, 2%, 3%, 4% and 5%, or a range formed by any two of these values.

[0037] Within the above-mentioned mass concentration range, the surface treatment liquid has a low solid content and low viscosity, can fully infiltrate the ceramic and has a low residual amount, thereby increasing the oil conduction speed without affecting the taste of the e-liquid.

[0038] In some embodiments, the soaking time is 2 to 10 minutes. Specifically, the soaking time can be any one of 2 minutes, 3 minutes, 4 minutes, 5 minutes, 6 minutes, 7 minutes, 8 minutes, 9 minutes, and 10 minutes, or a range formed by any two of these values.

[0039] Through the immersion treatment, the surfactant molecules will be adsorbed on the surface of the ceramic atomizer core to form a uniform molecular film, which can change the wetting properties of the surface of the ceramic atomizer core.

[0040] In some embodiments, the drying temperature of the drying process is 60-150° C., and the drying time is 1-3 hours. Specifically, the drying temperature can be any one of 60° C., 70° C., 80° C., 90° C., 100° C., 110° C., 120° C., 130° C., 140° C., and 150° C., or a range formed by any two of these values, and the drying time can be any one of 1 hour, 1.5 hours, 2 hours, 2.5 hours, and 3 hours, or a range formed by any two of these values.

[0041] During the drying process, the solvent gradually evaporates, while the surfactant molecules firmly adhere to the surface of the ceramic atomizer core, forming a stable hydrophobic or hydrophilic layer, ensuring the stability of the treatment effect. The formation of a hydrophobic or hydrophilic layer depends on the properties of the selected surfactant. For example, when glycerol fatty acid esters are used as surfactants, a hydrophobic layer is formed; when soybean lecithin is used as surfactant, a hydrophilic layer is formed.

[0042] In some embodiments, the step of preparing the surface treatment solution includes:

[0043] According to the formula, a first mass of surfactant and a second mass of solvent are weighed, and the surfactant is added to the solvent for dilution to obtain a surface treatment liquid, wherein the mass concentration of the diluted surface treatment liquid is 1-5%.

[0044] The calculation formula of mass concentration is as follows:

[0045]

[0046] Where m1 is the first mass and m2 is the second mass.

[0047] In some embodiments, the solvent is selected from one or more of ethanol, deionized water, and glycerol.

[0048] In some embodiments, before the step of placing the ceramic atomizing core in the surface treatment liquid for soaking treatment, the method further includes:

[0049] The ceramic atomization core is cleaned with an ionic solution.

[0050] The ionic solution refers to a solution containing conductive ions, such as a soluble salt solution.

[0051] Ionic solutions are conductive and have a surface tension greater than that of pure water. They can effectively remove dust particles generated by electrostatic effects on the ceramic atomization core. Compared with alkaline and acidic solutions, they can effectively avoid corrosion problems caused by the difficulty in controlling cleaning time.

[0052] In some embodiments, the ionic solution includes one or more of a sodium chloride solution, a magnesium chloride solution, and an ammonium chloride solution.

[0053] The present application adopts ammonium salt solution for cleaning to reduce solvent residue. Ammonium salt can volatilize and decompose during the drying process, thereby reducing ion solution residue and improving the cleaning effect.

[0054] The present application also provides a ceramic atomizer core that is surface-treated using the surface treatment method described above. The surface properties of the ceramic atomizer core treated by the surface treatment method are significantly improved, allowing it to better meet the atomization requirements of e-cigarette liquids, improve atomization efficiency, and extend its service life.

[0055] The following is a more detailed description of the present application with reference to specific embodiments, and further elaboration of the present application. However, these embodiments are by no means intended to limit the present application.

[0056] Example 1

[0057] This embodiment provides a surface treatment method for a ceramic atomizer core, comprising the following steps:

[0058] Step 1: Take 0.25 kg of sucrose fatty acid ester and 0.25 kg of sucrose acetate isobutyrate, add 9.5 kg of ethanol to dilute, and stir for 10 minutes to obtain a surface treatment solution;

[0059] Step 2: Soak the ceramic atomizer core in the surface treatment solution for 5 minutes and then remove it;

[0060] Step 3: Dry the removed ceramic atomizer core at a temperature of 80° C. for 1 hour.

[0061] Example 2

[0062] This embodiment provides a surface treatment method for a ceramic atomizer core, comprising the following steps:

[0063] Step 1: Take 0.4 kg of sorbitol, add 9.6 kg of deionized water to dilute, and stir for 10 minutes to obtain a surface treatment solution;

[0064] Step 2: Place the ceramic atomizer core into the surface treatment solution and soak for 6 minutes before removing it.

[0065] Step 3: Dry the removed ceramic atomizer core at a temperature of 120° C. for 2 hours.

[0066] Example 3

[0067] This embodiment provides a surface treatment method for a ceramic atomizer core, comprising the following steps:

[0068] Step 1: Take 0.15 kg of soybean lecithin, 0.1 kg of sorbitol, and 0.05 kg of sodium caseinate, add 9 kg of deionized water and 0.7 kg of glycerol to dilute, and stir for 20 minutes to obtain a surface treatment solution;

[0069] Step 2: Place the ceramic atomizer core into the surface treatment solution and soak for 6 minutes before removing it.

[0070] Step 3: Dry the removed ceramic atomizer core at a temperature of 150° C. for 2 hours.

[0071] The present application also provides a comparative example 1, which is a ceramic atomizing core that has not been surface treated.

[0072] Test result analysis:

[0073] The oil conduction speeds of the ceramic atomizer cores of Examples 1-3 and Comparative Example 1 were tested and analyzed, and the test results are shown in Table 1.

[0074] Table 1 Test results

[0075] Ceramic atomizer core Oil guide speed / S Example 1 42 Example 2 38 Example 3 41 Comparative Example 1 126

[0076] The oil conduction speed in this application is expressed by the oil conduction time. The oil conduction time refers to the time required for the oil to be transferred from the oil storage tank to the heating wire. The shorter the time, the faster the oil conduction speed.

[0077] It can be seen from the results in Table 1 that the oil conduction speed of the surface-treated ceramic atomizer core is much greater than that of the unsurface-treated ceramic atomizer core, indicating that the surface treatment method of the present application can significantly improve the surface performance of the ceramic atomizer core, can better adapt to the atomization requirements of the electronic cigarette liquid, improve the atomization efficiency, and solve the problem of slowing down the oil conduction speed and thus sticking the core due to silicon migration. At the same time, there is no need to reduce the contact area between the silicone and the ceramic atomizer core, does not affect the sealing, and reduces the risk of oil leakage.

[0078] Obviously, the embodiments described above are only some of the embodiments of the present application, rather than all of the embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present application specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present application.

Claims

1. A surface treatment method, characterized in that: The following steps are involved: preparing a surface treatment liquid, wherein the surface treatment liquid comprises a surfactant; placing the ceramic atomizing core in the surface treatment liquid for soaking treatment; The ceramic atomizer core after the immersion treatment is taken out and dried to finally obtain a ceramic atomizer core after surface treatment.

2. The surface treatment method according to claim 1, characterized in that The surfactant is one or more combinations of glycerol fatty acid ester, sucrose fatty acid ester, soybean lecithin, sucrose acetate isobutyrate, sodium caseinate, polyoxypropylene glycerol ether, and sorbitol.

3. The surface treatment method according to claim 2, characterized in that The surface treatment liquid is a dilution liquid with a mass concentration of 1-5%.

4. The surface treatment method according to claim 1, characterized in that The soaking treatment time is 2 to 10 minutes.

5. The surface treatment method according to claim 1, characterized in that: The drying temperature of the drying treatment is 60-150° C., and the drying time is 1-3 hours.

6. The surface treatment method according to any one of claims 1 to 5, characterized in that: The step of preparing the surface treatment liquid comprises: A first mass of a surfactant and a second mass of a solvent are weighed according to a formula, and the surfactant is added into the solvent for dilution to obtain a surface treatment liquid.

7. The surface treatment method according to claim 6, characterized in that: The solvent is selected from one or more of ethanol, deionized water, and glycerol.

8. The surface treatment method according to claim 1, characterized in that: Before the step of placing the ceramic atomizing core in the surface treatment liquid for immersion treatment, the method further includes: The ceramic atomizing core is cleaned with an ion solution.

9. The surface treatment method according to claim 8, characterized in that: The ion solution includes one or more of a sodium chloride solution, a magnesium chloride solution and an ammonium chloride solution.

10. A ceramic atomizing core, characterized in that: The ceramic atomizing core is surface treated by the surface treatment method according to any one of claims 1 to 9.

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