A method and system for drying and curing non-metallic materials based on frequency conversion microwave.

Abstract

This invention discloses a method and system for drying and curing non-metallic materials based on frequency-conversion microwaves. The method includes: placing the non-metallic material to be treated in a microwave resonant cavity, with a microwave-sensitive agent coated on the surface of the non-metallic material; setting the microwave frequency modulation range, power gradient, and processing time according to the type, thickness, and target drying / curing degree of the non-metallic material; starting a microwave generator and using frequency-conversion microwaves to dry and cure the non-metallic material through a stepped heating strategy and intermittent microwave radiation mode; and turning off the microwave generator and using natural cooling or forced air cooling to lower the temperature of the non-metallic material to room temperature. Using this invention, heating efficiency can be improved, and the uniformity and stability of the material drying and curing process can be ensured.

Description

Technical Field

[0001] This invention belongs to the field of drying technology, specifically a method and system for drying and curing non-metallic materials based on frequency conversion microwave. Background Technology

[0002] With the development of science and technology and the continuous progress of materials engineering, non-metallic materials are being used more and more widely in many industries, especially in aerospace, automobile manufacturing, building materials, and electronic components. Non-metallic materials typically have complex structures and physical properties, and often require drying and curing processes during production to ensure their performance meets expected standards. However, traditional drying and curing methods have some problems, affecting the efficiency and quality of material processing; therefore, there is an urgent need to find more efficient and precise processing methods.

[0003] Currently, common methods for drying and curing non-metallic materials mainly include hot air drying, infrared heating, and conventional microwave heating. Most of these methods rely on heat conduction or radiation heating, which has some drawbacks. For example, hot air drying typically has a slow heating rate and it is difficult to precisely control the temperature distribution during the drying process, potentially leading to over-drying of the material surface while internal moisture fails to escape in time, causing deformation or cracking. Infrared heating, although faster, also suffers from localized overheating, especially with thicker non-metallic materials, easily resulting in uneven heat distribution, surface overheating, and insufficient internal drying. Summary of the Invention

[0004] The purpose of this invention is to provide a method and system for drying and curing non-metallic materials based on frequency conversion microwave, so as to overcome the shortcomings of the prior art, improve heating efficiency, and ensure the uniformity and stability of the material drying and curing process.

[0005] One embodiment of this application provides a method for drying and curing non-metallic materials based on frequency conversion microwave, the method comprising:

[0006] The non-metallic material to be processed is placed in a microwave resonant cavity. The surface of the non-metallic material is coated with a microwave sensitive agent, which is a composite material of nano-sized ferrite particles and organosilicon resin, with a mass fraction of 0.5%-2% of the total weight of the non-metallic material.

[0007] Based on the type and thickness of the non-metallic material and the target degree of drying / curing, set the microwave frequency modulation range, power gradient and processing time;

[0008] The microwave generator is started, and the non-metallic material is dried and cured by using a step-by-step heating strategy and an intermittent microwave radiation mode through frequency conversion microwaves. The microwave frequency is adjusted in real time according to the dielectric constant of the non-metallic material so that the microwave energy forms a standing wave field inside the non-metallic material to achieve uniform energy distribution. In addition, the temperature change of each area of ​​the non-metallic material is monitored in real time, and the microwave power is dynamically adjusted to avoid local overheating or insufficient energy.

[0009] Turn off the microwave generator and use natural cooling or forced air cooling to lower the temperature of the non-metallic materials to room temperature.

[0010] Optionally, the microwave frequency modulation range is 2.45GHz-5.8GHz, the power gradient is 0.1kW / s-1kW / s, and the processing time is 10-60 minutes.

[0011] Optionally, the stepped heating strategy includes:

[0012] A stepped heating strategy is adopted to gradually increase the material temperature from room temperature to the target temperature. The heating rate is 5℃ / min-10℃ / min, and the target temperature is 80℃-150℃. During the heating process, the polarization effect of the microwave field promotes the orientation of the molecules inside the material along the direction of the electric field, which enhances the mechanical properties and thermal stability of the material. After the material reaches the target temperature, it is kept at a constant temperature and the microwave field is continuously applied to promote the cross-linking reaction inside the material and form a three-dimensional network structure.

[0013] Optionally, the intermittent microwave radiation mode includes:

[0014] Microwave radiation and microwave pauses are alternated, with each radiation session lasting 10-30 seconds and each pause lasting 5-15 seconds, in order to relieve internal stress in the material and prevent cracking or deformation.

[0015] Another embodiment of this application provides a non-metallic material drying and curing system based on frequency conversion microwave, the system comprising:

[0016] The placement module is used to place the non-metallic material to be processed into the microwave resonant cavity. The surface of the non-metallic material is coated with a microwave sensitive agent, which is a composite material of nano-sized ferrite particles and organosilicon resin, with a mass fraction of 0.5%-2% of the total weight of the non-metallic material.

[0017] The setting module is used to set the microwave frequency modulation range, power gradient, and processing time according to the type and thickness of the non-metallic material and the target drying / curing degree;

[0018] The drying module is used to start the microwave generator and use frequency-converted microwaves to dry and cure non-metallic materials through a stepped heating strategy and intermittent microwave radiation mode. The microwave frequency is adjusted in real time according to the dielectric constant of the non-metallic material so that the microwave energy forms a standing wave field inside the non-metallic material to achieve uniform energy distribution. In addition, the temperature change of each area of ​​the non-metallic material is monitored in real time and the microwave power is dynamically adjusted to avoid local overheating or insufficient energy.

[0019] The cooling module is used to shut down the microwave generator and use natural cooling or forced air cooling to reduce the temperature of non-metallic materials to room temperature.

[0020] Another embodiment of this application provides a storage medium storing a computer program, wherein the computer program is configured to execute the method described in any of the preceding claims when running.

[0021] Another embodiment of this application provides an electronic device including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the method described in any of the preceding claims.

[0022] Compared with existing technologies, this invention provides a method for drying and curing non-metallic materials based on frequency conversion microwaves. The method involves placing the non-metallic material to be treated in a microwave resonant cavity, with a microwave-sensitive agent coated on the surface of the material. The microwave frequency modulation range, power gradient, and processing time are set according to the type, thickness, and target drying / curing degree of the non-metallic material. A microwave generator is activated, and frequency conversion microwaves are used to dry and cure the non-metallic material through a stepped heating strategy and intermittent microwave radiation mode. The microwave generator is then turned off, and natural cooling or forced air cooling is employed to lower the temperature of the non-metallic material to room temperature. This improves heating efficiency and ensures the uniformity and stability of the material drying and curing process. Attached Figure Description

[0023] Figure 1 A hardware structure block diagram of a computer terminal for a method of drying and curing non-metallic materials based on frequency conversion microwave, provided for an embodiment of the present invention;

[0024] Figure 2 A schematic flowchart of a method for drying and curing non-metallic materials based on frequency conversion microwave is provided for an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of a non-metallic material drying and curing system based on frequency conversion microwave, provided as an embodiment of the present invention. Detailed Implementation

[0026] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] The present invention first provides a method for drying and curing non-metallic materials based on frequency conversion microwave. This method can be applied to electronic devices, such as computer terminals, specifically ordinary computers.

[0028] The following detailed explanation uses a computer terminal as an example. Figure 1 This is a hardware structure block diagram of a computer terminal for a method of drying and curing non-metallic materials based on frequency conversion microwave, provided as an embodiment of the present invention. Figure 1 As shown, the computer device includes a processor, memory, and network interface connected via a system bus, wherein the memory may include non-volatile storage media and internal memory.

[0029] The non-volatile storage medium can store an operating system and a computer program. The computer program includes program instructions that, when executed, cause the processor to perform any method for drying and curing non-metallic materials based on frequency-converting microwaves.

[0030] The processor provides computing and control capabilities, supporting the operation of the entire computer device.

[0031] The internal memory provides an environment for the execution of computer programs in non-volatile storage media. When the computer program is executed by the processor, it enables the processor to perform any method for drying and curing non-metallic materials based on frequency-converting microwaves.

[0032] This network interface is used for network communication, such as sending assigned tasks. Those skilled in the art will understand that... Figure 1 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0033] It should be understood that the processor can be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among these, a general-purpose processor can be a microprocessor or any conventional processor.

[0034] See Figure 2 The present invention provides a method for drying and curing non-metallic materials based on frequency conversion microwave, which may include the following steps:

[0035] S201, the non-metallic material to be processed is placed in a microwave resonant cavity, and the surface of the non-metallic material is coated with a microwave sensitive agent. The microwave sensitive agent is a composite material of nano-sized ferrite particles and organosilicon resin, and its mass fraction is 0.5%-2% of the total weight of the non-metallic material.

[0036] In this invention, the non-metallic material to be processed is first placed in a microwave resonant cavity for drying and curing. To improve the heating efficiency and uniformity of microwave energy on the material, a microwave sensitive agent is coated on the surface of the non-metallic material. This microwave sensitive agent is composed of nano-sized ferrite particles and organosilicon resin. The ferrite particles have good magnetic and dielectric properties, which helps to improve the microwave absorption capacity, while the organosilicon resin can improve the dispersibility and adhesion of the sensitive agent. The mass fraction of the microwave sensitive agent is 0.5%-2% of the total weight of the non-metallic material. This ratio ensures that the microwave energy can effectively act on the material surface and can uniformly penetrate into all layers of the material, thereby improving the drying and curing effect.

[0037] The use of microwave sensitizers can significantly enhance the energy absorption of non-metallic materials in a microwave field, thereby accelerating the drying and curing process. The introduction of ferrite particles increases microwave absorption, allowing microwave energy to be rapidly converted into heat energy, effectively promoting moisture evaporation and the cross-linking reaction of the adhesive layer. Simultaneously, the larger specific surface area of ​​nano-sized ferrite particles enhances their stability and reactivity during microwave heating, while the addition of silicone resin ensures the sensitizer is uniformly dispersed on the material surface, guaranteeing a uniform distribution of microwave energy. By adjusting the mass fraction of the sensitizer, the microwave treatment effect can be further optimized, avoiding problems such as localized overheating or uneven heating caused by excessive heat absorption, ensuring a balanced and stable final curing effect.

[0038] The microwave sensitive agent is a composite of nano-sized ferrite particles and organosilicon resin in a specific ratio. In its implementation, the ferrite particles are first dispersed into an organic solvent using ultrasound to ensure uniform particle distribution. Next, an appropriate amount of organosilicon resin is added to the ferrite particle solution and mixed thoroughly using a high-speed stirring device. Finally, the solvent is removed by solvent evaporation to obtain the composite microwave sensitive agent. The mass fraction of this composite material is typically 0.5%-2% of the total weight of the non-metallic material. This ratio has been experimentally verified to ensure efficient microwave energy absorption while avoiding unnecessary burden on the material surface. For example, if the non-metallic material to be treated is a plastic-based composite material, a microwave sensitive agent containing 1% ferrite particles can be prepared for coating. The microwave sensitive agent can be uniformly coated on the plastic surface, and through the high adsorption capacity of the nano-sized particles, it significantly improves the material's absorption of microwaves during radiation, enhancing the heating effect.

[0039] Microwave sensitive agents can be applied by spraying, dipping, or brushing. In practice, spraying is a commonly used and effective method. The process involves first preparing a solution of appropriate concentration using the microwave sensitive agent, then uniformly spraying it onto the surface of the non-metallic material using a spray gun, ensuring the sensitive agent covers the entire surface. The thickness of the spray coating needs to be controlled, typically at the micrometer level, to ensure effective penetration and uniform distribution of the sensitive agent on the non-metallic material surface. For example, when coating a composite material board, the operator will spray the microwave sensitive agent evenly onto the material surface according to the material's surface characteristics and a predetermined sensitive agent ratio, ensuring that microwave radiation fully acts on the coating, thereby effectively promoting the material's drying and curing process.

[0040] S202, set the microwave frequency modulation range, power gradient and processing time according to the type and thickness of the non-metallic material and the target drying / curing degree;

[0041] In this invention, the microwave frequency modulation range, power gradient, and processing time are adjusted according to the type and thickness of the non-metallic material and the target degree of drying or curing. This is because different types of non-metallic materials have different dielectric constants, and the microwave heating effect is closely related to the dielectric properties of the material. For example, thin and thick materials have different microwave absorption capabilities; thin materials may require lower power density and shorter processing time, while thick materials require higher power and longer processing time. By precisely adjusting the microwave frequency, power gradient, and processing time according to these factors, it is possible to ensure that the material is heated uniformly during the drying or curing process and to prevent localized overheating or underheating.

[0042] By appropriately setting the microwave frequency, power gradient, and processing time, the heating process of non-metallic materials can be effectively controlled. Personalized adjustments for different types, thicknesses, and curing requirements not only improve heating efficiency but also ensure heating uniformity, preventing material deformation, cracking, or incomplete curing caused by uneven heating. This method makes the drying and curing process more precise and controllable, improving the performance and processing quality of non-metallic materials and ensuring that the structure and physical properties of the cured material meet the expected standards.

[0043] The microwave frequency is adjusted based on the dielectric constant of the non-metallic material. For most common plastics, rubbers, or composite materials, the microwave frequency modulation range is typically set between 2.45 GHz and 5.8 GHz. This frequency range ensures that microwaves are effectively absorbed by the material, and frequency adjustment minimizes localized overheating during the heating process. For example, for a thin plastic sheet, setting a lower frequency (e.g., 2.45 GHz) allows for stronger absorption at shallower surfaces, while for thicker composite materials, a higher frequency (e.g., 5.8 GHz) may be needed to ensure the microwave energy penetrates deeper into the material. For instance, assuming a 5 mm thick composite material sheet needs to be processed, experimental testing reveals that its optimal absorption frequency is 3.5 GHz. Therefore, microwave treatment can be performed at this frequency to ensure that microwave energy penetrates more uniformly into the material.

[0044] Depending on the material thickness and the target degree of drying or curing, the power gradient setting is adjustable from 0.1 kW / s to 1 kW / s. Thinner materials can use a lower power gradient to avoid overheating; while thicker materials require a higher power gradient to ensure that internal moisture or other components evaporate or cure evenly. In practice, gradually increasing the power gradient smooths the heating process, preventing surface overheating or incomplete internal heating due to excessive power. For example, for a 1 mm thick plastic film, a power gradient of 0.3 kW / s ensures gradual surface heating, preventing overheating and cracking. For a 30 mm thick composite material sheet, a power gradient of 0.8 kW / s can be set to accelerate the heating process.

[0045] Processing time is typically determined by the thickness of the non-metallic material and the desired degree of drying or curing. Thinner materials may achieve drying or curing in a shorter time, while thicker materials require more time to ensure uniform conduction and full absorption of microwave energy. Generally, the processing time is set between 10 and 60 minutes. During this process, the microwave energy is adjusted in real time according to the material's absorption capacity to ensure that the heating process does not exceed the time limit or proceed too quickly. By adjusting the time, the rate of moisture evaporation and cross-linking reaction within the material can also be effectively controlled. For example, when processing a 10mm thick composite material, a processing time of 30 minutes ensures uniform drying and curing, achieving the desired curing effect. For a 2mm thick plastic film, the processing time may only require 15 minutes to complete the drying and curing process.

[0046] Specifically, the microwave frequency modulation range is 2.45GHz-5.8GHz, the power gradient is 0.1kW / s-1kW / s, and the processing time is 10-60 minutes.

[0047] This setup is based on in-depth research into the behavior of non-metallic materials during microwave heating. The frequency modulation range of 2.45GHz-5.8GHz covers the dielectric constant response range of most common non-metallic materials. Different frequencies can provide the most suitable energy transfer for different materials, effectively avoiding overheating or uneven heating. The power gradient range of 0.1kW / s-1kW / s ensures gradual temperature rise during the heating process, preventing sudden rapid heating that could lead to stress concentration or material damage. The processing time is set from 10 to 60 minutes, which can be adjusted according to the material thickness and degree of curing, allowing the material to fully absorb microwave energy within the set time to achieve ideal drying and curing effects.

[0048] The microwave frequency modulation range and power gradient settings ensure efficient absorption of microwave energy and uniform heating, avoiding the uneven heating and localized overheating problems common in traditional microwave heating. Adjusting the frequency range helps optimize the energy transfer process according to the characteristics of different materials, ensuring heating uniformity. The power gradient setting makes the heating process smoother, reducing material deformation or cracking caused by excessive temperature fluctuations. Furthermore, the 10-60 minute processing time range provides sufficient time for microwave energy to penetrate and reach a sufficient depth, promoting internal moisture evaporation or cross-linking reactions, ultimately ensuring the quality and consistency of the curing effect.

[0049] S203, start the microwave generator, use frequency conversion microwave, through a stepped heating strategy and intermittent microwave radiation mode to dry and cure non-metallic materials. In this process, the microwave frequency is adjusted in real time according to the dielectric constant of the non-metallic material so that the microwave energy forms a standing wave field inside the non-metallic material to achieve uniform energy distribution. In addition, the temperature change of each area of ​​the non-metallic material is monitored in real time and the microwave power is dynamically adjusted to avoid local overheating or insufficient energy.

[0050] In this invention, after the microwave generator is started, the key step in drying and curing non-metallic materials using a variable-frequency microwave, stepped heating strategy, and intermittent microwave radiation mode is to adjust the microwave frequency in real time based on the dielectric constant of the non-metallic material. The dielectric constant reflects the material's ability to absorb microwaves; different materials have different absorption characteristics. Therefore, adjusting the microwave frequency ensures that energy is evenly distributed within the material, forming a standing wave field. Through the standing wave field, the microwave energy distribution is more uniform, avoiding excessive energy concentration in a certain area, which can lead to localized overheating or uneven heating. Simultaneously, by monitoring the temperature changes in different areas of the non-metallic material in real time and dynamically adjusting the microwave power, the drying and curing process becomes more precise, ensuring appropriate temperature changes in each area and avoiding localized overheating or underheating.

[0051] This step, through precise control of microwave frequency and power, achieves dynamic adjustment of the microwave heating process, greatly improving the uniformity and efficiency of drying and curing. Real-time adjustment of microwave frequency and power can adapt to the characteristics and processing requirements of different materials, ensuring that all parts of the material are effectively heated, avoiding problems such as cracking, deformation, or incomplete curing that may be caused by uneven temperature. This highly efficient and precise heating control significantly improves the processing quality and production efficiency of non-metallic materials, avoiding resource waste.

[0052] After the microwave generator is started, the microwave frequency is first adjusted according to the type of non-metallic material and its dielectric constant. For example, if processing a ceramic material with a high dielectric constant, the microwave frequency may need to be adjusted to a lower band (e.g., 2.45 GHz) so that the material can effectively absorb microwave energy. If processing a plastic material with a low dielectric constant, the frequency can be adjusted to a higher band (e.g., 5.8 GHz) to ensure a more uniform energy distribution. Furthermore, real-time adjustment of the microwave frequency can avoid uneven energy absorption caused by the material's non-uniformity or multilayer structure, thus achieving a relatively consistent heating effect across different layers. For example, when processing a composite plastic sheet, its dielectric constant is first measured and found to be low; therefore, the microwave frequency is set to 5.8 GHz. At this point, the microwave energy can penetrate deeper into the material, effectively promoting the drying and curing process.

[0053] During processing, microwave power is dynamically adjusted by monitoring temperature changes in various areas of the non-metallic material in real time. A temperature monitoring system (such as an infrared sensor or temperature sensor array) provides real-time feedback on the material's temperature distribution. If a certain area is too hot, the microwave power is automatically reduced; conversely, the power is increased to ensure uniform heating. This temperature control mechanism effectively avoids localized overheating or insufficient energy, preventing deformation, cracking, or surface degradation caused by overheating. For example, when processing a 20mm thick composite material, if the temperature in the middle area is detected to be higher than the surface temperature, the system will automatically reduce the microwave power to prevent further temperature increases in the middle area, while simultaneously increasing the power in the surface area to ensure that the temperature of the entire material surface and interior reaches equilibrium, ultimately achieving uniform curing.

[0054] Throughout the heating process, microwave energy forms a standing wave field within the material, ensuring a uniform distribution of microwave energy. By adjusting the frequency, the propagation pattern of microwaves within the material is matched to its dielectric properties, preventing localized hot spots caused by frequency mismatch. The formation of the standing wave field facilitates the uniform distribution of microwave energy throughout the material, making the entire drying and curing process more efficient and stable. For example, when processing a composite material, microwave energy forms multiple standing wave nodes and anti-nodes within the material. By appropriately adjusting the microwave frequency and power, the heating effect at each node is ensured to be uniform, resulting in consistent curing levels on the material surface and within, preventing performance degradation due to uneven heating.

[0055] Specifically, the stepped heating strategy includes:

[0056] A stepped heating strategy is adopted to gradually increase the material temperature from room temperature to the target temperature. The heating rate is 5℃ / min-10℃ / min, and the target temperature is 80℃-150℃. During the heating process, the polarization effect of the microwave field promotes the orientation of the molecules inside the material along the direction of the electric field, which enhances the mechanical properties and thermal stability of the material. After the material reaches the target temperature, it is kept at a constant temperature and the microwave field is continuously applied to promote the cross-linking reaction inside the material and form a three-dimensional network structure.

[0057] In this invention, a stepped heating strategy gradually increases the material's temperature from room temperature to the target temperature. During the heating process, the microwave field, through polarization, causes the molecules within the material to align oriented along the electric field direction, thereby enhancing the material's mechanical properties and thermal stability. By setting an appropriate heating rate (e.g., 5°C / min to 10°C / min), not only can thermal stress caused by rapid heating be avoided, but the cross-linking reaction of the material can also be promoted, ultimately forming a stable three-dimensional network structure. The target temperature range is typically 80°C to 150°C; within this temperature range, the material's performance can be optimized and damage is less likely. After heating, a constant temperature is maintained, and the microwave field is continuously applied to effectively promote the cross-linking reaction within the material.

[0058] The implementation of a stepped heating strategy can effectively avoid thermal cracking or deformation caused by rapid heating of materials. By slowly and uniformly increasing the temperature, the molecular alignment within the material can be promoted, improving its mechanical strength and thermal stability. Furthermore, the polarization effect of the microwave field during the heating process accelerates the cross-linking reaction within the material, enhancing its curing effect and ensuring that the material reaches the ideal curing state. Maintaining a constant temperature and continuously applying a microwave field allows the cross-linking reaction to proceed fully, ultimately forming a robust three-dimensional network structure and improving the overall performance of the material.

[0059] Specifically, the intermittent microwave radiation mode includes alternating microwave radiation and microwave pauses, with each radiation session lasting 10-30 seconds and each pause lasting 5-15 seconds, in order to relieve internal stress in the material and prevent cracking or deformation.

[0060] In this invention, an intermittent microwave radiation mode is used to regulate the heating process of non-metallic materials by alternating between microwave radiation and pauses. Each microwave radiation session lasts 10-30 seconds, and each pause lasts 5-15 seconds. This alternating mode helps to alleviate internal stress in the material. Microwave radiation heats the molecules inside the material and causes thermal expansion. However, if heating is continuous, a large temperature difference may occur between the surface and the interior of the material, leading to stress accumulation and potentially causing cracks or deformation. By setting the intervals for radiation and pauses, the material can have time to reach thermal equilibrium after microwave radiation, thus avoiding stress concentration caused by rapid temperature changes. This heating method ensures that the material absorbs heat uniformly during drying or curing, preventing physical damage caused by uneven thermal expansion.

[0061] The application of intermittent microwave radiation effectively solves the thermal stress problem that may be caused during microwave heating, especially when processing thin-layer or high-stress-sensitive non-metallic materials, significantly reducing the risk of cracking and deformation. By rationally adjusting the ratio of radiation time to pause time, not only can the heating rate be controlled, but thermal equilibrium between the material surface and interior can also be promoted, thereby improving the stability of the drying and curing process. This method avoids excessively rapid or excessive thermal expansion, improving the molding quality and performance stability of non-metallic materials, and is particularly suitable for high-performance materials or composite materials that are sensitive to temperature changes.

[0062] S204, turn off the microwave generator and use natural cooling or forced air cooling to lower the temperature of the non-metallic materials to room temperature.

[0063] In this invention, after the microwave generator is turned off, the temperature of the non-metallic material needs to be reduced to room temperature through natural cooling or forced air cooling. This process is to avoid potential degradation or deformation of material properties caused by excessively high temperatures due to continuous microwave heating. During microwave heating, the internal temperature of the material is often high. When heating stops, if the material is directly exposed to room temperature, the temperature change between the surface and interior of the material may be too rapid, leading to uneven thermal stress and potentially causing cracking or deformation. Therefore, natural cooling or forced air cooling allows the material temperature to gradually decrease, achieving temperature balance, reducing thermal stress, and preventing uneven stress distribution during cooling.

[0064] This cooling step is a crucial part of the drying and curing process, ensuring that non-metallic materials possess ideal mechanical properties and morphological stability after treatment. By slowly and uniformly reducing the temperature, problems such as cracking and deformation caused by excessive temperature differences between the material's interior and surface are avoided. The choice between natural cooling or air cooling prevents localized overcooling due to rapid cooling, effectively improving the structural integrity and physical properties of the non-metallic material. Furthermore, gradual cooling helps promote molecular rearrangement within the material, enhancing its tensile strength, hardness, and other properties, ensuring its stability and durability during use.

[0065] Natural cooling utilizes ambient temperature and natural airflow to lower the material's temperature. After the microwave generator is turned off, the material is removed from the microwave resonant cavity and placed in a cool environment for natural cooling. During this process, heat exchange occurs between the material's surface and the surrounding air, gradually reducing its temperature. Specifically, in an indoor environment with an ambient temperature of 20°C-25°C, placing the material in an open space or well-ventilated area allows airflow to help dissipate heat. This method is suitable for materials that are sensitive to temperature changes, such as certain plastics or fibers, where the cooling rate is critical. For example, when processing a polyester composite material, the material is immediately removed after microwave radiation and placed in a well-ventilated area of ​​the laboratory to cool naturally to room temperature. Due to its low thermal conductivity, natural cooling ensures a more uniform temperature difference between the surface and interior, preventing cracking.

[0066] For materials requiring rapid cooling or for high-efficiency production needs, forced air cooling can be used to accelerate the cooling process. By directly blowing cold air onto the material surface using a powerful fan or cooling system after microwave treatment, the material temperature can be rapidly reduced from its high state to room temperature. This method is suitable for materials requiring high cooling speeds, or for large-scale production where shorter cooling times are needed to improve efficiency. For example, assuming a 20mm thick composite ceramic material is being processed, after microwave curing, cooling is achieved through a forced air cooling system. A fan blows cold air at a speed of approximately 3 meters per second, thereby reducing the material surface temperature from 150°C to room temperature in a short time, maintaining material stability and accelerating the production cycle.

[0067] In actual production, a combination of natural cooling and forced air cooling may be necessary to achieve more precise temperature control. For example, natural cooling can be used to lower the material temperature to around 100°C, followed by precise control using a high-efficiency fan system during the remaining cooling process. This method not only improves cooling efficiency but also avoids the risks associated with excessively rapid cooling, ensuring that the cooling rate at each stage conforms to the material's physical properties. For instance, suppose the material being processed is a composite material containing glass fiber. After microwave curing, natural cooling is used to lower the temperature to 120°C, followed by further cooling to room temperature using a high-efficiency fan system. This accelerates the cooling process while avoiding uneven material stress caused by excessively rapid cooling.

[0068] As can be seen, the non-metallic material to be processed is placed in a microwave resonant cavity, and the surface of the non-metallic material is coated with a microwave sensitive agent. According to the type, thickness and target drying / curing degree of the non-metallic material, the microwave frequency modulation range, power gradient and processing time are set. The microwave generator is started, and the non-metallic material is dried and cured by using a stepped heating strategy and intermittent microwave radiation mode through frequency conversion microwave. The microwave generator is turned off, and the temperature of the non-metallic material is reduced to room temperature by natural cooling or forced air cooling, which can improve heating efficiency and ensure the uniformity and stability of the material drying and curing process.

[0069] Another embodiment of the present invention provides a non-metallic material drying and curing system based on frequency conversion microwave, see [link to relevant documentation]. Figure 3 The system may include:

[0070] The placement module 301 is used to place the non-metallic material to be processed into the microwave resonant cavity. The surface of the non-metallic material is coated with a microwave sensitive agent, which is a composite material of nano-sized ferrite particles and organosilicon resin, and its mass fraction is 0.5%-2% of the total weight of the non-metallic material.

[0071] The setting module 302 is used to set the microwave frequency modulation range, power gradient and processing time according to the type, thickness and target drying / curing degree of the non-metallic material;

[0072] The drying module 303 is used to start the microwave generator and use frequency-converted microwaves to dry and cure non-metallic materials through a stepped heating strategy and intermittent microwave radiation mode. The microwave frequency is adjusted in real time according to the dielectric constant of the non-metallic material so that the microwave energy forms a standing wave field inside the non-metallic material to achieve uniform energy distribution. In addition, the temperature change of each area of ​​the non-metallic material is monitored in real time and the microwave power is dynamically adjusted to avoid local overheating or insufficient energy.

[0073] Cooling module 304 is used to shut down the microwave generator and use natural cooling or forced air cooling to reduce the temperature of non-metallic materials to room temperature.

[0074] As can be seen, the non-metallic material to be processed is placed in a microwave resonant cavity, and the surface of the non-metallic material is coated with a microwave sensitive agent. According to the type, thickness and target drying / curing degree of the non-metallic material, the microwave frequency modulation range, power gradient and processing time are set. The microwave generator is started, and the non-metallic material is dried and cured by using a stepped heating strategy and intermittent microwave radiation mode through frequency conversion microwave. The microwave generator is turned off, and the temperature of the non-metallic material is reduced to room temperature by natural cooling or forced air cooling, which can improve heating efficiency and ensure the uniformity and stability of the material drying and curing process.

[0075] This invention also provides a storage medium storing a computer program, wherein the computer program is configured to execute the steps in any of the above method embodiments when running.

[0076] Specifically, in this embodiment, the storage medium can be configured to store a computer program for performing the following steps:

[0077] S201, the non-metallic material to be processed is placed in a microwave resonant cavity, and the surface of the non-metallic material is coated with a microwave sensitive agent. The microwave sensitive agent is a composite material of nano-sized ferrite particles and organosilicon resin, and its mass fraction is 0.5%-2% of the total weight of the non-metallic material.

[0078] S202, set the microwave frequency modulation range, power gradient and processing time according to the type and thickness of the non-metallic material and the target drying / curing degree;

[0079] S203, start the microwave generator, use frequency conversion microwave, through a stepped heating strategy and intermittent microwave radiation mode to dry and cure non-metallic materials. In this process, the microwave frequency is adjusted in real time according to the dielectric constant of the non-metallic material so that the microwave energy forms a standing wave field inside the non-metallic material to achieve uniform energy distribution. In addition, the temperature change of each area of ​​the non-metallic material is monitored in real time and the microwave power is dynamically adjusted to avoid local overheating or insufficient energy.

[0080] S204, turn off the microwave generator and use natural cooling or forced air cooling to lower the temperature of the non-metallic materials to room temperature.

[0081] As can be seen, the non-metallic material to be processed is placed in a microwave resonant cavity, and the surface of the non-metallic material is coated with a microwave sensitive agent. According to the type, thickness and target drying / curing degree of the non-metallic material, the microwave frequency modulation range, power gradient and processing time are set. The microwave generator is started, and the non-metallic material is dried and cured by using a stepped heating strategy and intermittent microwave radiation mode through frequency conversion microwave. The microwave generator is turned off, and the temperature of the non-metallic material is reduced to room temperature by natural cooling or forced air cooling, which can improve heating efficiency and ensure the uniformity and stability of the material drying and curing process.

[0082] This invention also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0083] Specifically, the aforementioned electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the aforementioned processor, and the input / output device is connected to the aforementioned processor.

[0084] Specifically, in this embodiment, the processor can be configured to perform the following steps via a computer program:

[0085] S201, the non-metallic material to be processed is placed in a microwave resonant cavity, and the surface of the non-metallic material is coated with a microwave sensitive agent. The microwave sensitive agent is a composite material of nano-sized ferrite particles and organosilicon resin, and its mass fraction is 0.5%-2% of the total weight of the non-metallic material.

[0086] S202, set the microwave frequency modulation range, power gradient and processing time according to the type and thickness of the non-metallic material and the target drying / curing degree;

[0087] S203, start the microwave generator, use frequency conversion microwave, through a stepped heating strategy and intermittent microwave radiation mode to dry and cure non-metallic materials. In this process, the microwave frequency is adjusted in real time according to the dielectric constant of the non-metallic material so that the microwave energy forms a standing wave field inside the non-metallic material to achieve uniform energy distribution. In addition, the temperature change of each area of ​​the non-metallic material is monitored in real time and the microwave power is dynamically adjusted to avoid local overheating or insufficient energy.

[0088] S204, turn off the microwave generator and use natural cooling or forced air cooling to lower the temperature of the non-metallic materials to room temperature.

[0089] As can be seen, the non-metallic material to be processed is placed in a microwave resonant cavity, and the surface of the non-metallic material is coated with a microwave sensitive agent. According to the type, thickness and target drying / curing degree of the non-metallic material, the microwave frequency modulation range, power gradient and processing time are set. The microwave generator is started, and the non-metallic material is dried and cured by using a stepped heating strategy and intermittent microwave radiation mode through frequency conversion microwave. The microwave generator is turned off, and the temperature of the non-metallic material is reduced to room temperature by natural cooling or forced air cooling, which can improve heating efficiency and ensure the uniformity and stability of the material drying and curing process.

[0090] The above description, based on the embodiments shown in the figures, details the structure, features, and effects of the present invention. The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, that do not exceed the spirit covered by the specification and figures, should be within the protection scope of the present invention.

Claims

1. A method for drying and curing non-metallic materials based on frequency conversion microwave, characterized in that, The method includes: The non-metallic material to be processed is placed in a microwave resonant cavity. The surface of the non-metallic material is coated with a microwave sensitive agent, which is a composite material of nano-sized ferrite particles and organosilicon resin, with a mass fraction of 0.5%-2% of the total weight of the non-metallic material. Based on the type and thickness of the non-metallic material and the target degree of drying / curing, the microwave frequency modulation range, power gradient, and processing time are set; wherein, the microwave frequency modulation range is 2.45GHz-5.8GHz, the power gradient is 0.1kW / s-1kW / s, and the processing time is 10-60 minutes. A microwave generator is activated, and using frequency-converted microwaves, non-metallic materials are dried and cured through a stepped heating strategy and intermittent microwave radiation mode. The microwave frequency is adjusted in real-time according to the dielectric constant of the non-metallic material to create a standing wave field within the material, achieving uniform energy distribution. Furthermore, the temperature changes in different regions of the non-metallic material are monitored in real-time, and the microwave power is dynamically adjusted to avoid localized overheating or insufficient energy. The stepped heating strategy involves gradually increasing the material temperature from room temperature to a target temperature at a rate of 5℃ / min-10℃ / min, with a target temperature of 80℃-150℃. During the heating process, the polarization effect of the microwave field promotes the directional alignment of molecules within the material along the electric field direction, enhancing the material's mechanical properties and thermal stability. Once the target temperature is reached, the material is kept at a constant temperature, and the microwave field is continuously applied to promote cross-linking reactions within the material, forming a three-dimensional network structure. Turn off the microwave generator and use natural cooling or forced air cooling to lower the temperature of the non-metallic materials to room temperature.

2. The method according to claim 1, characterized in that, The intermittent microwave radiation mode includes: Microwave radiation and microwave pauses are alternated, with each radiation session lasting 10-30 seconds and each pause lasting 5-15 seconds, in order to relieve internal stress in the material and prevent cracking or deformation.

3. A non-metallic material drying and curing system based on frequency conversion microwave, characterized in that, The system includes: The placement module is used to place the non-metallic material to be processed into the microwave resonant cavity. The surface of the non-metallic material is coated with a microwave sensitive agent, which is a composite material of nano-sized ferrite particles and organosilicon resin, with a mass fraction of 0.5%-2% of the total weight of the non-metallic material. The setting module is used to set the microwave frequency modulation range, power gradient, and processing time according to the type, thickness, and target drying / curing degree of the non-metallic material; wherein the microwave frequency modulation range is 2.45GHz-5.8GHz, the power gradient is 0.1kW / s-1kW / s, and the processing time is 10-60 minutes. The drying module is used to start the microwave generator and use frequency-converted microwaves to dry and cure non-metallic materials through a stepped heating strategy and intermittent microwave radiation mode. Specifically, the microwave frequency is adjusted in real time according to the dielectric constant of the non-metallic material to form a standing wave field within the material, achieving uniform energy distribution. Furthermore, the temperature changes in different areas of the non-metallic material are monitored in real time, and the microwave power is dynamically adjusted to avoid localized overheating or insufficient energy. The stepped heating strategy involves gradually increasing the material temperature from room temperature to a target temperature at a rate of 5℃ / min-10℃ / min, with a target temperature of 80℃-150℃. During the heating process, the polarization effect of the microwave field promotes the directional alignment of molecules within the material along the electric field direction, enhancing the material's mechanical properties and thermal stability. Once the target temperature is reached, the material is kept at a constant temperature, and the microwave field is continuously applied to promote cross-linking reactions within the material, forming a three-dimensional network structure. The cooling module is used to shut down the microwave generator and use natural cooling or forced air cooling to reduce the temperature of non-metallic materials to room temperature.

4. The system according to claim 3, characterized in that, The intermittent microwave radiation mode includes: Microwave radiation and microwave pauses are alternated, with each radiation session lasting 10-30 seconds and each pause lasting 5-15 seconds, in order to relieve internal stress in the material and prevent cracking or deformation.

5. A storage medium, characterized in that, The storage medium stores a computer program, wherein the computer program is configured to execute the method of any one of claims 1-2 when it is run.

6. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to run the computer program to perform the method according to any one of claims 1-2.

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