High-temperature-resistant anti-aging electronic component coating and preparation method thereof
By combining modified soybean oil, silane fluorene-based epoxy monomers, and modified mica powder, the problems of rapid aging and insufficient antibacterial ability of electronic component coatings at high temperatures were solved, thus improving the high-temperature resistance, anti-aging effect, and antibacterial effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-16
- Publication Date
- 2026-03-13
AI Technical Summary
Existing coatings for electronic components age rapidly at high temperatures, have poor adhesion, and lack antibacterial properties, failing to meet the protection needs of miniaturized and high-frequency electronic products.
By introducing modified soybean oil, silane fluorenyl epoxy monomers and modified mica powder, a high-temperature resistant and anti-aging electronic component coating is formed. The quaternary ammonium salt structure is used to enhance the anti-mildew and antibacterial ability, the introduction of fluorenyl and siloxane structures improves thermal stability, and the anti-mildew performance is enhanced by protocatechuic acid.
It significantly improves the high-temperature resistance and antibacterial ability of the coating, extends the service life of electronic components, and enhances the protective effect in high-temperature environments.
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Abstract
Description
Technical Field
[0001] This invention relates to the field of coating technology, specifically to a high-temperature resistant and anti-aging electronic component coating and its preparation method. Background Technology
[0002] Electronic component coatings are special coatings designed for electronic components and circuit boards. They form a protective film through application, primarily functioning to isolate environmental factors such as moisture, dust, mold, and salt spray, preventing short circuits, corrosion, and oxidation, thereby improving equipment reliability and lifespan. Currently, the most researched electronic component coatings include epoxy resin coatings, polyester resin coatings, polyurethane resin coatings, silicone resin coatings, and imide resin coatings. Among these, epoxy resin coatings have become widely used due to their low cost, strong adhesion, and ease of application.
[0003] As electronic products trend towards miniaturization and higher frequencies, the requirements for the thermal stability of protective coatings are also increasing. Prolonged exposure to high temperatures accelerates chemical reactions, leading to coating aging, brittleness, and decreased adhesion, significantly reducing its protective effect. Furthermore, these coating materials, which use polymer resins as film-forming substances, lack specific antibacterial capabilities and are prone to mold and bacterial growth in humid and warm environments. This invention uses epoxy resin as the film-forming substance and introduces functional groups and structures through chemical modification, enhancing the coating's antibacterial and high-temperature resistance to further meet market demands. Summary of the Invention
[0004] The purpose of this invention is to provide a high-temperature resistant and anti-aging electronic component coating and its preparation method, so as to solve the problems existing in the prior art.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A high-temperature resistant and anti-aging electronic component coating, characterized in that the high-temperature resistant and anti-aging electronic component coating comprises 30-40 parts of epoxy resin, 12-16 parts of modified soybean oil, 8-10 parts of silane fluorenyl epoxy monomer, 8-10 parts of curing agent, 3-5 parts of modified mica powder, and 50-60 parts of acetone.
[0006] Furthermore, the modified soybean oil is prepared by reacting soybean oil with 3-(dimethylamino)-1-propanethiol to obtain pre-modified soybean oil; and by reacting pre-modified soybean oil with epichlorohydrin to obtain modified soybean oil.
[0007] Furthermore, the silane fluorene-based epoxy monomer is prepared by reacting diphenyl dichlorosilane and bisphenol fluorene to obtain an intermediate; and by reacting the intermediate with epichlorohydrin to obtain the silane fluorene-based epoxy monomer.
[0008] Furthermore, the modified mica powder is prepared by reacting mica powder with γ-aminopropyltriethoxysilane to obtain pre-modified mica powder; and by reacting pre-modified mica powder with protocatechuic acid to obtain modified mica powder.
[0009] A method for preparing a high-temperature resistant and anti-aging electronic component coating, the method comprising the following steps: (1) Place the pre-modified soybean oil in a reaction vessel, purge with nitrogen, and add epichlorohydrin at a uniform rate of 2 to 2.2 times the mass of the pre-modified soybean oil over 30 minutes at room temperature. After the addition is complete, raise the temperature to 45 to 55°C and continue stirring for 3 to 4 hours. Remove the unreacted epichlorohydrin with n-hexane and dry under vacuum at 50 to 60°C for 20 to 24 hours to obtain modified soybean oil. (2) Weigh the intermediate and epichlorohydrin at a molar ratio of 1:(8~10); add the intermediate and epichlorohydrin to dimethyl sulfoxide at a mass ratio of 16~20 times that of the intermediate, add tetrabutylammonium bromide at a mass ratio of 0.1~0.12 times that of the intermediate, stir and react at 65~75℃ for 5~6h, cool to room temperature, add sodium hydroxide aqueous solution with a mass fraction of 40%~50% at a uniform rate dropwise at a mass ratio of 1 times that of the intermediate within 30min, continue stirring and reacting for 10~12h, evaporate under reduced pressure, wash 3~5 times each with anhydrous ethanol and deionized water, and dry under vacuum at 40~50℃ for 20~24h to obtain silane fluorene epoxy monomer; (3) Mix pre-modified mica powder, protocatechuic acid, and N,N-dimethylformamide in a mass ratio of 1:(2~3):(30~40) until homogeneous. Add N,N-dicyclohexylcarbodiimide at a mass ratio of 0.04~0.06 times that of the pre-modified mica powder. Stir and react at room temperature for 4~6 h. Filter, wash with anhydrous ethanol 3~5 times, and vacuum dry at 50~60℃ for 16~20 h to obtain modified mica powder. (4) Mix epoxy resin, modified soybean oil, silane fluorenyl epoxy monomer, modified mica powder and acetone, stir at room temperature for 10-20 minutes, add curing agent, and degas under vacuum to obtain high temperature resistant and anti-aging electronic component coating.
[0010] Further, the preparation method of the pre-modified soybean oil in step (1) is as follows: 3-(dimethylamino)-1-propanethiol, 2-hydroxy-2-methyl-phenyl-acetone, and acetone are mixed evenly in a mass ratio of 1:(0.01~0.02):(2~3), and 0.3~0.4 times the mass of soybean oil of 3-(dimethylamino)-1-propanethiol is added. The mixture is irradiated with ultraviolet light for 10~12h at room temperature under nitrogen atmosphere. After the reaction is completed, the mixture is extracted with ethyl acetate and deionized water. The organic phase is then dried under vacuum at 50~60℃ for 20~24h to obtain the pre-modified soybean oil.
[0011] Further, the preparation method of the intermediate in step (2) is as follows: weigh diphenyl dichlorosilane and bisphenol fluorene at a molar ratio of 1:2; mix bisphenol fluorene and N,N-dimethylformamide at a mass ratio of 1:(8~10) evenly, heat to 40~50℃ under nitrogen protection, add diphenyl dichlorosilane dropwise at a uniform rate within 1h, continue stirring the reaction for 5~6h after the addition is complete, evaporate under reduced pressure, wash with acetone 3~5 times, and dry under vacuum at 60~70℃ for 20~24h to obtain the intermediate.
[0012] Furthermore, the chemical formula for the reaction of the silane fluorene-based epoxy monomer in step (2) is: .
[0013] Further, the preparation method of the pre-modified mica powder in step (3) is as follows: mica powder, deionized water and anhydrous ethanol are mixed evenly in a mass ratio of 1:(20~30):(30~40), ultrasonically dispersed for 1h, γ-aminopropyltriethoxysilane with a mass of 1~2 times that of mica powder is added, and the mixture is stirred and reacted at 60~70℃ for 5~7h, filtered, washed 3~5 times each with anhydrous ethanol and deionized water, and vacuum dried at 50~60℃ for 10~14h to obtain the pre-modified mica powder.
[0014] Further, the dosage relationship of epoxy resin, modified soybean oil, silane fluorenyl epoxy monomer, modified mica powder, acetone and curing agent in step (4) is as follows: by mass parts, epoxy resin 30~40 parts, modified soybean oil 12~16 parts, silane fluorenyl epoxy monomer 8~10 parts, curing agent 8~10 parts, modified mica powder 3~5 parts, acetone 50~60 parts.
[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: (i) The C=C double bond on soybean oil is added to the mercapto group on 3-(dimethylamino)-1-propanethiol to prepare pre-modified soybean oil. The pre-modified soybean oil and epichlorohydrin are then subjected to a quaternization reaction to prepare modified soybean oil. A quaternary ammonium salt structure is generated on the soybean oil, and epoxy groups are introduced. Quaternary ammonium salt is a type of cationic antibacterial agent, which can improve the antifungal and antibacterial ability of coatings. The introduced epoxy groups allow soybean oil to participate in the curing of coatings.
[0016] (ii) An intermediate is prepared by reacting diphenyl dichlorosilane and bisphenol fluorene; the intermediate is then reacted with epichlorohydrin to prepare a silane fluorene-based epoxy monomer; the epoxy groups on the silane fluorene-based epoxy monomer can participate in the curing of the coating, introducing fluorene and siloxane structures into the paint film to improve the high temperature resistance of the coating.
[0017] (III) Adding mica powder with excellent thermal stability to the coating can further enhance the coating's high-temperature resistance. Surface modification of mica powder with γ-aminopropyltriethoxysilane grafts a large number of amino groups onto the mica powder surface, which then undergo amidation reaction or electrostatic interaction with the carboxyl groups on protocatechuic acid, loading protocatechuic acid onto the mica powder surface. Protocatechuic acid is a phenolic acid naturally found in many vegetables and fruits, containing a diphenol structure similar to dopamine. It has been proven to kill a variety of pathogens, including bacteria and fungi, and is relatively inexpensive, further enhancing the coating's antifungal and antibacterial capabilities. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0019] In the following examples and comparative examples, The epoxy resin used is type E51; The curing agent used is 4,4'-diaminodiphenylmethane; The mica powder used has a particle size of 800 mesh; The UV lamp used is 30kw / h, UV254-365nm.
[0020] Example 1: A method for preparing a high-temperature resistant and anti-aging coating for electronic components includes the following preparation steps: (1) Mix 3-(dimethylamino)-1-propanethiol, 2-hydroxy-2-methyl-phenyl-acetone and acetone in a mass ratio of 1:0.01:2. Add soybean oil with a mass of 0.3 times that of 3-(dimethylamino)-1-propanethiol. Irradiate with ultraviolet light for 10 h at room temperature and under nitrogen atmosphere. After the reaction is completed, extract with ethyl acetate and deionized water. Take the organic phase and dry it under vacuum at 50 °C for 24 h to obtain pre-modified soybean oil. Place the pre-modified soybean oil in a reaction vessel, purge with nitrogen, and add epichlorohydrin with a mass of 2 times that of the pre-modified soybean oil at a uniform rate over 30 min at room temperature. After the addition is completed, raise the temperature to 45 °C and continue stirring for 4 h. Remove the unreacted epichlorohydrin with n-hexane and dry it under vacuum at 50 °C for 24 h to obtain modified soybean oil. (2) Weigh diphenyl dichlorosilane and bisphenol fluorene in a molar ratio of 1:2; mix bisphenol fluorene and N,N-dimethylformamide in a mass ratio of 1:8, heat to 40°C under nitrogen protection, add diphenyl dichlorosilane dropwise at a uniform rate over 1 hour, and continue stirring for 6 hours after the addition is complete. Then, evaporate under reduced pressure, wash three times with acetone, and dry under vacuum at 60°C for 24 hours to obtain the intermediate; weigh the intermediate and epichlorohydrin in a molar ratio of 1:8; mix the intermediate, Epichlorohydrin was added to dimethyl sulfoxide at a mass of 16 times that of the intermediate, and tetrabutylammonium bromide at a mass of 0.1 times that of the intermediate was added. The mixture was stirred at 65°C for 6 hours, cooled to room temperature, and sodium hydroxide aqueous solution with a mass fraction of 40% was added dropwise at a uniform rate over 30 minutes. The mixture was stirred and reacted for another 12 hours. The mixture was then evaporated under reduced pressure, washed three times each with anhydrous ethanol and deionized water, and dried under vacuum at 40°C for 24 hours to obtain silane fluorene epoxy monomer. (3) Mix mica powder, deionized water and anhydrous ethanol in a mass ratio of 1:20:30, disperse ultrasonically for 1 h, add γ-aminopropyltriethoxysilane with a mass ratio of 1:1, stir and react at 60°C for 7 h, filter, wash 3 times each with anhydrous ethanol and deionized water, and vacuum dry at 50°C for 14 h to obtain pre-modified mica powder; mix pre-modified mica powder, protocatechuic acid and N,N-dimethylformamide in a mass ratio of 1:2:30, add N,N-dicyclohexylcarbodiimide with a mass ratio of 0.04, stir and react at room temperature for 4 h, filter, wash 3 times with anhydrous ethanol, and vacuum dry at 50°C for 20 h to obtain modified mica powder; (4) Weigh 30 parts of epoxy resin, 12 parts of modified soybean oil, 8 parts of silane fluorenyl epoxy monomer, 8 parts of 4,4'-diaminodiphenylmethane, 3 parts of modified mica powder, and 50 parts of acetone by mass. Stir the epoxy resin, modified soybean oil, silane fluorenyl epoxy monomer, modified mica powder, and acetone at room temperature for 10 minutes. Add 4,4'-diaminodiphenylmethane and mix evenly. Degas under vacuum to obtain a high-temperature resistant and anti-aging electronic component coating.
[0021] Example 2: A method for preparing a high-temperature resistant and anti-aging coating for electronic components includes the following preparation steps: (1) Mix 3-(dimethylamino)-1-propanethiol, 2-hydroxy-2-methyl-phenyl-acetone and acetone in a mass ratio of 1:0.015:2.5. Add soybean oil with a mass of 0.35 times that of 3-(dimethylamino)-1-propanethiol. Irradiate with ultraviolet light for 11 h at room temperature and under nitrogen atmosphere. After the reaction is completed, extract with ethyl acetate and deionized water. Take the organic phase and dry it under vacuum at 55 °C for 22 h to obtain pre-modified soybean oil. Place the pre-modified soybean oil in a reaction vessel, purge with nitrogen, and add epichlorohydrin with a mass of 2.1 times that of the pre-modified soybean oil at a uniform rate over 30 min at room temperature. After the addition is completed, raise the temperature to 50 °C and continue stirring for 3.5 h. Remove unreacted epichlorohydrin with n-hexane and dry under vacuum at 55 °C for 22 h to obtain modified soybean oil. (2) Weigh diphenyl dichlorosilane and bisphenol fluorene in a molar ratio of 1:2; mix bisphenol fluorene and N,N-dimethylformamide in a mass ratio of 1:9, heat to 45°C under nitrogen protection, add diphenyl dichlorosilane dropwise at a uniform rate over 1 hour, and continue stirring for 5.5 hours after the addition is complete. Then, evaporate under reduced pressure, wash four times with acetone, and dry under vacuum at 65°C for 22 hours to obtain the intermediate; weigh the intermediate and epichlorohydrin in a molar ratio of 1:9; mix the intermediate and epichlorohydrin... Oxychloropropane was added to dimethyl sulfoxide at a mass of 18 times that of the intermediate, and tetrabutylammonium bromide at a mass of 0.11 times that of the intermediate was added. The mixture was stirred at 70°C for 5.5 h, cooled to room temperature, and sodium hydroxide aqueous solution with a mass fraction of 45% was added dropwise at a uniform rate over 30 min. The mixture was stirred and reacted for another 11 h. The mixture was then rotary evaporated under reduced pressure, washed four times each with anhydrous ethanol and deionized water, and dried under vacuum at 45°C for 22 h to obtain the silane fluorene epoxy monomer. (3) Mix mica powder, deionized water and anhydrous ethanol in a mass ratio of 1:25:35, disperse by ultrasonication for 1 h, add γ-aminopropyltriethoxysilane at a mass ratio of 1.5 times that of mica powder, stir and react at 65°C for 6 h, filter, wash with anhydrous ethanol and deionized water 4 times each, and vacuum dry at 55°C for 12 h to obtain pre-modified mica powder; mix pre-modified mica powder, protocatechuic acid and N,N-dimethylformamide in a mass ratio of 1:2.5:35, add N,N-dicyclohexylcarbodiimide at a mass ratio of 0.05 times that of pre-modified mica powder, stir and react at room temperature for 5 h, filter, wash with anhydrous ethanol 4 times, and vacuum dry at 55°C for 18 h to obtain modified mica powder; (4) Weigh 35 parts of epoxy resin, 14 parts of modified soybean oil, 9 parts of silane fluorenyl epoxy monomer, 9 parts of 4,4'-diaminodiphenylmethane, 4 parts of modified mica powder, and 55 parts of acetone by mass. Stir the epoxy resin, modified soybean oil, silane fluorenyl epoxy monomer, modified mica powder, and acetone at room temperature for 15 minutes. Add 4,4'-diaminodiphenylmethane and mix evenly. Degas under vacuum to obtain a high-temperature resistant and anti-aging electronic component coating.
[0022] Example 3: A method for preparing a high-temperature resistant and anti-aging coating for electronic components includes the following preparation steps: (1) Mix 3-(dimethylamino)-1-propanethiol, 2-hydroxy-2-methyl-phenyl-acetone and acetone in a mass ratio of 1:0.02:3. Add soybean oil with a mass of 0.4 times that of 3-(dimethylamino)-1-propanethiol. Irradiate with ultraviolet light for 12 hours at room temperature and under nitrogen atmosphere. After the reaction is completed, extract with ethyl acetate and deionized water. Take the organic phase and dry it under vacuum at 60°C for 20 hours to obtain pre-modified soybean oil. Place the pre-modified soybean oil in a reaction vessel, purge with nitrogen, and add epichlorohydrin with a mass of 2.2 times that of the pre-modified soybean oil at a uniform rate over 30 minutes at room temperature. After the addition is completed, raise the temperature to 55°C and continue stirring for 3 hours. Remove the unreacted epichlorohydrin with n-hexane and dry it under vacuum at 60°C for 20 hours to obtain modified soybean oil. (2) Weigh diphenyl dichlorosilane and bisphenol fluorene at a molar ratio of 1:2; mix bisphenol fluorene and N,N-dimethylformamide at a mass ratio of 1:10, heat to 50°C under nitrogen protection, add diphenyl dichlorosilane dropwise at a uniform rate over 1 hour, and continue stirring for 5 hours after the addition is complete. Then, evaporate under reduced pressure, wash 5 times with acetone, and dry under vacuum at 70°C for 20 hours to obtain the intermediate; weigh the intermediate and epichlorohydrin at a molar ratio of 1:10; mix the intermediate, Epichlorohydrin was added to dimethyl sulfoxide at a mass of 20 times that of the intermediate, and tetrabutylammonium bromide at a mass of 0.12 times that of the intermediate was added. The mixture was stirred at 75°C for 5 hours and cooled to room temperature. A 45% sodium hydroxide aqueous solution at a mass of 1 times that of the intermediate was added dropwise over 30 minutes. The mixture was stirred and reacted for 11 hours. The mixture was then evaporated under reduced pressure, washed four times each with anhydrous ethanol and deionized water, and dried under vacuum at 45°C for 22 hours to obtain the silane fluorene epoxy monomer. (3) Mix mica powder, deionized water and anhydrous ethanol in a mass ratio of 1:25:35, disperse ultrasonically for 1 h, add γ-aminopropyltriethoxysilane at 1.5 times the mass of mica powder, stir and react at 65°C for 6 h, filter, wash 5 times each with anhydrous ethanol and deionized water, and vacuum dry at 60°C for 10 h to obtain pre-modified mica powder; mix pre-modified mica powder, protocatechuic acid and N,N-dimethylformamide in a mass ratio of 1:2:30, add N,N-dicyclohexylcarbodiimide at 0.04 times the mass of pre-modified mica powder, stir and react at room temperature for 6 h, filter, wash 5 times with anhydrous ethanol, and vacuum dry at 60°C for 16 h to obtain modified mica powder; (4) Weigh 40 parts of epoxy resin, 16 parts of modified soybean oil, 10 parts of silane fluorenyl epoxy monomer, 10 parts of 4,4'-diaminodiphenylmethane, 5 parts of modified mica powder, and 60 parts of acetone by mass. Stir the epoxy resin, modified soybean oil, silane fluorenyl epoxy monomer, modified mica powder, and acetone at room temperature for 20 minutes. Add 4,4'-diaminodiphenylmethane and mix evenly. Degas under vacuum to obtain a high-temperature resistant and anti-aging electronic component coating.
[0023] Comparative Example 1: The difference between the preparation method of the high temperature resistant and anti-aging electronic component coating of Comparative Example 1 and Example 2 is that step (1) is not performed, that is, the soybean oil is not modified. In step (4), "soybean oil" is used instead of "modified soybean oil".
[0024] Comparative Example 2: The difference between the preparation method of the high temperature resistant and anti-aging electronic component coating of Comparative Example 2 and Example 2 is that step (2) is omitted, and in step (4) the "silane fluorene epoxy monomer" is replaced with "epoxy resin".
[0025] Comparative Example 3: The difference between the preparation method of the high temperature resistant and anti-aging electronic component coating of Comparative Example 3 and Example 2 is that step (3) is not performed, and "modified mica powder" is not added in step (4).
[0026] Test case High temperature resistance test: This study tested the tensile strength of the specimens at room temperature and after high-temperature aging treatment, and calculated the retention of tensile strength after high-temperature aging, thereby reflecting the specimens' resistance to high temperatures.
[0027] Specific procedures: Following GB / T1040, standard test specimens were prepared from the examples and comparative examples. The curing conditions were: heat curing at 160℃ for 3 hours, heat curing at 120℃ for 2 hours, and natural cooling to room temperature. The tensile strength of the test specimens was then tested using an electronic universal testing machine, denoted as (A1). The test specimens were then aged in hot air at 250℃ for 240 hours, and the tensile strength of the test specimens after high-temperature aging was tested again, denoted as (A2). The tensile strength retention rate of the examples and comparative examples after high-temperature aging was calculated; tensile strength retention rate = (A2) / (A1) × 100%.
[0028] Antibacterial performance test: The samples from the examples and comparative examples were poured into molds and heat-cured at 160°C for 3 hours and 120°C for 2 hours, then naturally cooled to room temperature to obtain the coated film. Referring to the surface antimicrobial activity test standard (ISO22196:2007, IDT), Gram-negative Escherichia coli (E. coli) (ATCC8739) was used as the experimental microorganism. The antimicrobial activity of the coated film was detected by counting colonies, and the bactericidal rate of the coated film was calculated. The bactericidal rate was calculated as: bactericidal rate = (C0 - C) / C0 × 100%, where C0 is the number of colonies in the blank sample and C is the number of colonies in the coated sample.
[0029] Table 1 Comparing the experimental data in Table 1, the tensile strength retention rate of Example 2 is greater than that of Comparative Example 2 and Comparative Example 3. The reason is that the introduction of fluorene, siloxane structure and mica powder into the paint film can improve the high temperature resistance of the coating.
[0030] Comparing the experimental data in Table 1, the sterilization rate of Example 2 is greater than that of Comparative Example 1 and Comparative Example 3. The reason for this is that modifying soybean oil by adding quaternary ammonium salt and improving mica powder by loading protocatechuic acid onto the mica powder, and then adding the modified soybean oil and mica powder to the coating can improve the sterilization ability of the coating.
[0031] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A high-temperature resistant and anti-aging coating for electronic components, characterized in that, The high-temperature resistant and anti-aging electronic component coating comprises 30-40 parts epoxy resin, 12-16 parts modified soybean oil, 8-10 parts silane fluorenyl epoxy monomer, 8-10 parts curing agent, 3-5 parts modified mica powder, and 50-60 parts acetone.
2. The high-temperature resistant and anti-aging electronic component coating as described in claim 1, characterized in that, The modified soybean oil is prepared by reacting soybean oil with 3-(dimethylamino)-1-propanethiol to obtain pre-modified soybean oil; and by reacting pre-modified soybean oil with epichlorohydrin to obtain modified soybean oil.
3. The high-temperature resistant and anti-aging electronic component coating as described in claim 1, characterized in that, The silane fluorene-based epoxy monomer is prepared by reacting diphenyl dichlorosilane and bisphenol fluorene to obtain an intermediate; and by reacting the intermediate with epichlorohydrin to obtain the silane fluorene-based epoxy monomer.
4. The high-temperature resistant and anti-aging electronic component coating as described in claim 1, characterized in that, The modified mica powder is prepared by reacting mica powder with γ-aminopropyltriethoxysilane to obtain pre-modified mica powder; and by reacting pre-modified mica powder with protocatechuic acid to obtain modified mica powder.
5. A method for preparing a high-temperature resistant and anti-aging coating for electronic components, characterized in that, The preparation method of the high-temperature resistant and anti-aging electronic component coating includes the following steps: (1) Place the pre-modified soybean oil in a reaction vessel, purge with nitrogen, and add epichlorohydrin at a uniform rate of 2 to 2.2 times the mass of the pre-modified soybean oil over 30 minutes at room temperature. After the addition is complete, raise the temperature to 45 to 55°C and continue stirring for 3 to 4 hours. Remove the unreacted epichlorohydrin with n-hexane and dry under vacuum to obtain modified soybean oil. (2) Weigh the intermediate and epichlorohydrin at a molar ratio of 1:(8~10); add the intermediate and epichlorohydrin to dimethyl sulfoxide, add 0.1~0.12 times the mass of the intermediate of tetrabutylammonium bromide, stir and react at 65~75℃ for 5~6h, cool to room temperature, add sodium hydroxide aqueous solution dropwise at a uniform rate over 30min, continue stirring and reacting for 10~12h, evaporate under reduced pressure, wash, and dry under vacuum to obtain silane fluorenyl epoxy monomer; (3) Mix pre-modified mica powder, protocatechuic acid, and N,N-dimethylformamide in a mass ratio of 1:(2~3):(30~40) until homogeneous. Add N,N-dicyclohexylcarbodiimide at a mass ratio of 0.04~0.06 times that of the pre-modified mica powder. Stir and react at room temperature for 4~6 hours. Filter, wash, and vacuum dry to obtain modified mica powder. (4) Mix epoxy resin, modified soybean oil, silane fluorenyl epoxy monomer, modified mica powder and acetone, stir at room temperature for 10-20 minutes, add curing agent and mix evenly, degas under vacuum to obtain high temperature resistant and anti-aging electronic component coating.
6. The method for preparing a high-temperature resistant and anti-aging electronic component coating as described in claim 5, characterized in that, The preparation method of the pre-modified soybean oil in step (1) is as follows: 3-(dimethylamino)-1-propanethiol, 2-hydroxy-2-methyl-phenyl-acetone, and acetone are mixed evenly in a mass ratio of 1:(0.01~0.02):(2~3), and 0.3~0.4 times the mass of soybean oil of 3-(dimethylamino)-1-propanethiol is added. The mixture is then irradiated with ultraviolet light for 10~12 hours at room temperature under nitrogen atmosphere, extracted, and the organic phase is collected and vacuum dried to obtain the pre-modified soybean oil.
7. The method for preparing a high-temperature resistant and anti-aging electronic component coating as described in claim 5, characterized in that, The intermediate in step (2) is prepared as follows: Diphenyl dichlorosilane and bisphenol fluorene are weighed in a molar ratio of 1:2; bisphenol fluorene and N,N-dimethylformamide are mixed evenly, heated to 40~50℃ under nitrogen protection, and diphenyl dichlorosilane is added dropwise at a uniform rate over 1 hour. After the addition is complete, the mixture is stirred and reacted for 5~6 hours. The mixture is then evaporated under reduced pressure, washed, and dried under vacuum to obtain the intermediate.
8. The method for preparing a high-temperature resistant and anti-aging electronic component coating as described in claim 5, characterized in that, The preparation method of the pre-modified mica powder in step (3) is as follows: mix mica powder, deionized water and anhydrous ethanol evenly, disperse by ultrasonication, add γ-aminopropyltriethoxysilane at 1 to 2 times the mass of mica powder, stir and react at 60 to 70°C for 5 to 7 hours, filter, wash and vacuum dry to obtain pre-modified mica powder.
9. The method for preparing a high-temperature resistant and anti-aging electronic component coating as described in claim 5, characterized in that, The dosage relationship of epoxy resin, modified soybean oil, silane fluorenyl epoxy monomer, modified mica powder, acetone and curing agent in step (4) is as follows: by mass parts, epoxy resin 30~40 parts, modified soybean oil 12~16 parts, silane fluorenyl epoxy monomer 8~10 parts, curing agent 8~10 parts, modified mica powder 3~5 parts, acetone 50~60 parts.