High-temperature-resistant wave-transparent silicon-based coating and preparation method thereof
By using a combination of methylphenyl silicone resin and modified low dielectric filler, the problem of radar dome transmissive coating failure at high temperatures was solved, achieving stability and transmissivity of the coating at high temperatures, and improving the service life and appearance of the radar dome.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-27
- Publication Date
- 2026-04-10
AI Technical Summary
Existing radar dome coatings are prone to failure under high-temperature conditions, resulting in discoloration, peeling, and other problems that affect the radar's appearance and lifespan.
A high-temperature resistant, microwave-transparent silicone coating was prepared by using methylphenyl silicone resin as the film-forming material, combined with modified low dielectric filler and high-temperature resistant filler, improving the compatibility between the filler and resin through a dopamine modification layer, and adding low melting point glass powder to enhance the bonding strength.
It maintains vibrant color and prevents fading at high temperatures, avoids peeling, ensures adhesion between the coating and the substrate, and improves the wave transmittance and mechanical properties of the coating.
Smart Images
Figure CN121825404A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of high-temperature resistant coatings technology, and more specifically, to a high-temperature resistant, wave-transparent silicon-based coating and its preparation method. Background Technology
[0002] The radome is a critical component of a radar system, primarily used to protect the internal antennas and electronic equipment from harsh external environments. When an aircraft flies at Mach 3, the surface temperature of the substrate reaches approximately 350°C due to intense friction with the air. This necessitates that the radome surface coating possess characteristics of high-temperature resistance, wave transmission, and resistance to environmental corrosion. Current radome wave-transmitting coatings are mainly polyurethane-based, which exhibits good wave transmission and environmental corrosion resistance at room temperature. However, under high-temperature conditions, problems such as discoloration and peeling can easily occur, affecting the radar's appearance and lifespan. Summary of the Invention
[0003] (a) Technical problems to be solved The technical problem to be solved by the present invention is that the existing radar dome transparent coating is prone to failure under high temperature conditions.
[0004] (II) Technical Solution To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a high-temperature resistant and microwave-transparent silicon-based coating, comprising the following components by weight: 40-50 parts of methylphenyl silicone resin, 5-10 parts of modified low dielectric filler, 10-20 parts of high-temperature resistant filler, 5-20 parts of high-temperature resistant pigment, 0.5-2 parts of dispersant, 0.5-2 parts of leveling agent, 0.5-2 parts of defoamer, and 30-50 parts of diluent.
[0005] Preferably, the modified low-dielectric filler is a filler matrix coated with a dopamine-modified layer, wherein the dopamine-modified layer is dopamine, which is an amino-grafted short-chain polymer with carboxyl-terminated groups, and the filler matrix includes at least one of polytetrafluoroethylene powder, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, and fluorinated ethylene propylene copolymer.
[0006] Preferably, the high-temperature resistant filler includes at least one of low-melting-point glass powder, rutile titanium dioxide, talc powder, and mica powder, wherein the initial melting temperature of the low-melting-point glass powder is 270℃-300℃.
[0007] Preferably, the high-temperature resistant pigment includes at least one of carbon black, copper chromium black, cobalt blue, cobalt green, ultramarine, titanium nickel yellow, and iron zinc chromium brown.
[0008] Preferably, the leveling agent includes at least one of BYK-310, BYK-361N, and EFKA-3777.
[0009] Preferably, the defoamer includes at least one of BYK-052, SC-370, and DF-6680.
[0010] Preferably, the dispersant includes at least one of BYK-346, BYK-LP X 25383, and EFKA-4010.
[0011] Preferably, the diluent includes at least one of xylene, propylene glycol methyl ether acetate, and butyl acetate.
[0012] Secondly, the present invention also provides a method for preparing the aforementioned high-temperature resistant and wave-transparent silicon-based coating, comprising the following steps: Preparation of modified low-dielectric fillers; Methylphenyl silicone resin and high-temperature resistant filler are added to a dispersion tank in a preset ratio and dispersed at a speed of 300-600 rpm for 30-60 minutes until they are uniform to obtain the first dispersion. Then, add the high-temperature resistant pigment to the dispersion according to the preset ratio, and disperse it at a speed of 300~600 rpm for 30-60 minutes until it is uniform, to obtain the second dispersion. Next, leveling agent, defoamer and dispersant are added to the second dispersion and dispersed until uniform to obtain the third dispersion; The third dispersion is then transferred to a ball mill jar for ball milling at a speed of 200-400 rpm for 2-4 hours. After ball milling, the dispersion is sieved through a 30-micron sieve and then transferred to a dispersion tank. The modified low dielectric filler and diluent are added to the third dispersion and dispersed at a speed of 300-600 rpm for 30-60 minutes until uniform dispersion is achieved, thus obtaining a high-temperature resistant, microwave-transparent silicon-based coating.
[0013] Preferably, the preparation of the modified low-dielectric filler includes the following steps: The filler matrix was ultrasonically dispersed in anhydrous ethanol for 30 min to remove surface contaminants. After centrifugation, the precipitate was dried in a vacuum drying oven at 60℃ for 12 h to obtain the pretreated filler matrix. Prepare a 10mM Tris-HCl buffer solution with pH=8.5, dissolve dopamine hydrochloride in the buffer solution, and prepare a dopamine solution with a concentration of 2g / L. The pretreated filler matrix was added to a dopamine solution and stirred to react. After the reaction was completed, the precipitate was separated by centrifugation and collected. The precipitate was washed with deionized water and then dried in a vacuum drying oven to obtain a filler matrix with a dopamine-modified layer on its surface. A polymer solution with a concentration of 2-5 g / L was prepared by dissolving a carboxyl-terminated polymer HOOC-PEG-COOH with a molecular weight of 500 in DMF. Add N-hydroxysuccinimide at a molar ratio of 2-2.5 to the polymer solution, activate for 30 min, and then add a filler matrix with a dopamine-modified surface coating at a ratio of 50 g / L. Stir at 200 rpm for 24 h at 40 °C. After the reaction is complete, centrifuge and collect the precipitate, wash it with deionized water, and dry it in a vacuum drying oven at 60 °C for 12 h to obtain the modified low dielectric filler.
[0014] (III) Beneficial Effects The above-described technical solution of the present invention has at least the following advantages: 1. The film-forming material used in this invention is methylphenyl silicone resin. Benefiting from the presence of phenyl side groups, this resin exhibits excellent thermal stability and can remain resistant to yellowing at 300°C for extended periods. The low-melting-point glass powder used in this invention begins to melt at 300°C, effectively filling cracks caused by prolonged aging of the methylphenyl silicone resin at 350°C, ensuring its bonding performance at high temperatures. The various high-temperature resistant fillers and pigments used in this invention possess excellent thermal stability, maintaining vibrant color without fading or blackening at 400°C for extended periods. Through careful selection of the film-forming material and fillers, this coating maintains its original color at high temperatures, exhibiting low-temperature color change and excellent resistance to yellowing, thus ensuring the appearance of the radome. The addition of low-melting-point glass powder enhances the coating's bonding strength at high temperatures, preventing peeling.
[0015] 2. The film-forming material used in this invention is methylphenyl silicone resin. This resin has both methyl and phenyl components, and combines high-temperature stability and flexibility. On the one hand, it ensures that the coating will not undergo ablation and carbonization under long-term high temperature conditions. On the other hand, its good flexibility avoids the problem of high-temperature coating cracking caused by the difference in thermal expansion coefficients between the coating and the substrate, thus ensuring good adhesion between the coating and the substrate.
[0016] 3. The modified low-dielectric filler used in this invention achieves surface activation of the chemically inert fluorinated low-dielectric filler through dopamine coating, thereby enabling the growth of carboxyl-terminated polymers on the filler surface. The polymer chains grown on the low-dielectric filler surface carry carboxyl groups, which can react with the silanol groups in methylphenyl silicone resin, greatly improving the compatibility between the filler and the resin, optimizing the dispersion effect of the filler in the resin, and enhancing the cohesiveness of the coating. This allows the coating to maintain good mechanical properties and wave transmission under long-term service conditions. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 The coating appearance after a heat resistance test at 350°C is shown in the embodiments and comparative examples of this invention.
[0019] Figure 2 The results are the mechanical property test results of the coating after 400 hours of testing at 350°C, as provided in the embodiments and comparative examples of this invention. Detailed Implementation
[0020] To make the technical problems, technical solutions, and beneficial effects of this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0021] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, "at least one of a, b, or c", or "at least one of a, b, and c", can both mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple.
[0022] It should be understood that in the various embodiments of this application, the order of the above processes does not imply the order of execution. Some or all steps may be executed in parallel or sequentially. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.
[0023] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.
[0024] The weights of the relevant components mentioned in the embodiments of this application can refer not only to the specific content of each component, but also to the proportional relationship between the weights of the components. Therefore, any scaling up or down of the content of the relevant components according to the embodiments of this application is within the scope disclosed in the embodiments of this application. Specifically, the mass described in the embodiments of this application can be a well-known unit of mass in the chemical industry, such as µg, mg, g, or kg.
[0025] The terms "first" and "second" are used for descriptive purposes only, to distinguish objects, such as substances, from one another, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. For example, without departing from the scope of the embodiments of this application, "first XX" may also be referred to as "second XX," and similarly, "second XX" may also be referred to as "first XX." Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature.
[0026] The terms "PTFE" are abbreviations for "Polytetrafluoroethylene," representing polytetrafluoroethylene; "PVDF" is abbreviation for "Polyvinylidenedifluoride," representing polyvinylidene fluoride; "ETFE" is abbreviation for "ethylene-tetrafluoroethylene," representing ethylene-tetrafluoroethylene copolymer; "FEP" is abbreviation for "Fluorinated ethylene propylene," representing fluorinated ethylene propylene copolymer; "Tris-HCl" is abbreviation for "Tris(Hydroxymethyl)Aminomethane Hydrochloride," representing tris(hydroxymethyl)aminomethane hydrochloride; "PEG" is abbreviation for "Polyethylene glycol," representing polyethylene glycol; and "DMF" is abbreviation for "Dimethylformamide," representing N,N-dimethylformamide.
[0027] The first aspect of this application provides a high-temperature resistant and microwave-transparent silicon-based coating, comprising the following components by weight: 40-50 parts of methylphenyl silicone resin, 5-10 parts of modified low-dielectric filler, 10-20 parts of high-temperature resistant filler, 5-20 parts of high-temperature resistant pigment, 0.5-2 parts of dispersant, 0.5-2 parts of leveling agent, 0.5-2 parts of defoamer, and 30-50 parts of diluent.
[0028] In some embodiments, the modified low-dielectric filler is a filler matrix coated with a dopamine-modified layer. The dopamine-modified layer is dopamine, which is an amino-grafted short-chain polymer with carboxyl-terminated dopamine. The filler matrix includes at least one of polytetrafluoroethylene powder, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, and fluorinated ethylene propylene copolymer.
[0029] In some embodiments, the high-temperature resistant filler includes at least one of low-melting-point glass powder, rutile titanium dioxide, talc powder, and mica powder, wherein the initial melting temperature of the low-melting-point glass powder is 270℃-300℃.
[0030] In some embodiments, the high-temperature resistant pigment includes at least one of carbon black, copper chromium black, cobalt blue, cobalt green, ultramarine, titanium nickel yellow, and iron zinc chromium brown.
[0031] In some embodiments, the leveling agent includes at least one of BYK-310, BYK-361N, and EFKA-3777.
[0032] In some embodiments, the defoamer includes at least one of BYK-052, SC-370, and DF-6680.
[0033] In some embodiments, the dispersant includes at least one of BYK-346, BYK-LP X 25383, and EFKA-4010.
[0034] In some embodiments, the diluent includes at least one of xylene, propylene glycol methyl ether acetate, and butyl acetate.
[0035] The second aspect of this application provides a method for preparing the high-temperature resistant and microwave-transparent silicon-based coating, comprising the following steps: Preparation of modified low-dielectric fillers: The low-dielectric fillers are first coated with dopamine, and then the amino groups of the dopamine coating layer are grafted with short-chain polymers with carboxyl-terminated groups to improve the dispersibility of the fillers in the coating. Methylphenyl silicone resin and high-temperature resistant filler are added to a dispersion tank in a preset ratio and dispersed until uniform to obtain the first dispersion. Then, the high-temperature resistant pigment is added to the dispersion in a preset ratio and dispersed until it is uniform to obtain a second dispersion. Next, leveling agent, defoamer and dispersant are added to the second dispersion and dispersed until uniform to obtain the third dispersion; The third dispersion is then transferred to a ball mill jar for ball milling. After ball milling, the dispersion is sieved and transferred to a dispersion tank. Modified low-dielectric filler and diluent are added to the third dispersion and dispersed until uniform to obtain a high-temperature resistant, microwave-transparent silicon-based coating.
[0036] In some embodiments, the preparation of modified low-dielectric fillers includes the following steps: The filler matrix was ultrasonically dispersed in anhydrous ethanol to remove surface contaminants. After centrifugation, the precipitate was dried in a vacuum drying oven to obtain the pretreated filler matrix. Prepare a Tris-HCl buffer solution, dissolve dopamine hydrochloride in the buffer solution, and prepare a dopamine solution. The pretreated filler matrix was added to a dopamine solution and stirred to react. After the reaction was completed, the precipitate was separated by centrifugation and collected. The precipitate was washed with deionized water and then dried in a vacuum drying oven to obtain a filler matrix with a dopamine-modified layer on its surface. A polymer solution was prepared by dissolving the carboxyl-terminated polymer HOOC-PEG-COOH in DMF. Add 2-2.5 times the molar ratio of N-hydroxysuccinimide to the polymer solution, activate it, and then add a filler matrix coated with a dopamine-modified layer. After stirring and reacting, centrifuge and collect the precipitate, wash it with deionized water, and dry it in a vacuum drying oven to obtain the modified low dielectric filler.
[0037] The following description is based on specific embodiments.
[0038] Example 1 This embodiment provides a high-temperature resistant, wave-transparent silicon-based coating and its preparation method. The preparation method includes the following steps: (1) Add 50 parts of methylphenyl silicone resin, 5 parts of rutile titanium dioxide (high temperature resistant filler), 5 parts of talc (high temperature resistant filler), and 3 parts of low melting point glass powder (high temperature resistant filler) to a dispersion tank and disperse at 400 rpm for 40 minutes until uniform to obtain the first dispersion; add 2 parts of carbon black (high temperature resistant pigment), 3 parts of cobalt blue (high temperature resistant pigment), and 1 part of titanium nickel yellow (high temperature resistant pigment) to the first dispersion in proportion and disperse at 500 rpm for 30 minutes until uniform to obtain the second dispersion.
[0039] (2) Add 0.5 parts of BYK-310 (leveling agent), 1 part of SC-370 (defoamer), and 0.5 parts of BYK-346 (dispersant) to the second dispersion in sequence according to the ratio, and disperse at a speed of 600 rpm for 60 minutes until the dispersion is uniform. (3) Transfer the above dispersion to a ball mill jar and ball mill at 400 rpm for 3 hours. After ball milling, sieve the dispersion through a 30-micron sieve and transfer the sieved dispersion to a dispersion tank. (4) Add 5 parts of phenolic resin powder (low dielectric filler), 2 parts of modified PTFE (modified low dielectric filler), 3 parts of modified PVDF (modified low dielectric filler), and 40 parts of xylene (diluent) to the above dispersion and disperse at a speed of 600 rpm for 60 minutes to achieve a uniform state, and obtain a high temperature resistant microwave transparent silicon-based coating.
[0040] The specific preparation methods for modified low-dielectric fillers (such as modified PTFE and modified PVDF) are as follows: (1) Place the filler matrix (such as PTFE, PVDF) in anhydrous ethanol and ultrasonically disperse for 30 min to remove surface contaminants. After centrifugation, place the precipitate in a vacuum drying oven at 60℃ and dry for 12 h.
[0041] (2) Prepare a 10mM Tris-HCl buffer solution with pH=8.5, dissolve dopamine hydrochloride in the buffer solution, and prepare a dopamine solution with a dopamine concentration of 2g / L.
[0042] (3) The pretreated low dielectric filler was added to the dopamine solution and stirred at 100 rpm for 24 h at 25 °C. After the reaction was completed, the filler was centrifuged and the precipitate was collected, washed with deionized water, and dried in a vacuum drying oven at 60 °C for 12 h to obtain a filler matrix with a dopamine-modified layer on the surface.
[0043] (4) Dissolve the carboxyl-terminated polymer HOOC-PEG-COOH with a molecular weight of 500 in DMF to prepare a polymer solution of 2-5 g / L.
[0044] (5) Add N-hydroxysuccinimide in a molar ratio of 2-2.5 to the polymer solution, activate for 30 min, and then add the filler matrix coated with dopamine modification layer at a ratio of 50 g / L. Stir at 200 rpm at 40 °C for 24 h. After the reaction is completed, centrifuge and separate the precipitate. Wash the precipitate with deionized water and dry it in a vacuum drying oven at 60 °C for 12 h to obtain the modified low dielectric filler.
[0045] Comparative Example 1 (without adding low melting point glass powder) A high-temperature resistant, wave-transparent silicon-based coating and its preparation method (without adding low-melting-point glass powder), comprising the following: (1) Add 40 parts of methylphenyl silicone resin, 5 parts of rutile titanium dioxide, 3 parts of talc powder and 5 parts of mica powder to a dispersion tank and disperse at 400 rpm for 40 minutes until uniform. Add 2 parts of carbon black, 3 parts of cobalt blue and 1 part of titanium nickel yellow to the above dispersion in proportion and disperse at 500 rpm for 30 minutes until uniform.
[0046] (2) Add 1 part of BYK-361N, 1 part of BYK-052 and 0.5 parts of BYK-LPX25383 to the above dispersion in sequence according to the ratio, and disperse at a speed of 500 rpm for 60 minutes until the dispersion is uniform. (3) Transfer the above dispersion to a ball mill jar and ball mill at 400 rpm for 4 hours. After ball milling, sieve the dispersion through a 30-micron sieve and transfer the sieved dispersion to a dispersion tank. (4) Add 5 parts of phenolic resin powder, 2 parts of modified ETFE, 3 parts of modified FEP and 40 parts of propylene glycol methyl ether acetate to the above dispersion, disperse at a speed of 600 rpm for 60 minutes to achieve a uniform state, and obtain a high temperature resistant transparent silicon-based coating.
[0047] Comparative Example 2 (using unmodified low-dielectric filler) A high-temperature resistant, wave-transparent silicon-based coating and its preparation method (low dielectric filler without surface modification), comprising the following: (1) Add 50 parts of methylphenyl silicone resin, 5 parts of talc powder, 3 parts of mica powder and 5 parts of low melting point glass powder to a dispersion tank and disperse at 400 rpm for 60 minutes until uniform. Add 2 parts of carbon black, 3 parts of cobalt blue and 1 part of titanium nickel yellow to the above dispersion in proportion and disperse at 500 rpm for 60 minutes until uniform.
[0048] (2) Add 2 parts of EFKA-3777, 1 part of DF-6680 and 0.5 parts of EFKA-4010 to the above dispersion in sequence according to the ratio, and disperse at a speed of 500 rpm for 60 minutes until the dispersion is uniform. (3) Transfer the above dispersion to a ball mill jar and ball mill at 300 rpm for 2 hours. After ball milling, sieve the dispersion through a 30-micron sieve and transfer the sieved dispersion to a dispersion tank. (4) Add 3 parts PTFE, 3 parts ETFE, 2 parts FEP and 40 parts butyl acetate to the above dispersion and disperse at 600 rpm for 60 minutes to achieve a uniform state, and obtain a high temperature resistant transparent silicon-based coating.
[0049] The transmittance and mechanical properties of the three coatings in their initial state and after testing at 350℃ for 400 hours are as follows: Figure 1 The results of measuring various indicators for the specimens with high-temperature resistant, microwave-transparent silicon-based coatings provided in this embodiment are as follows: Figure 1In the image: a) Photograph of the original coating; b) Photograph of the specimen after testing at 350℃ for 100 hours; c) Photograph of the specimen after testing at 350℃ for 200 hours; d) Photograph of the specimen after testing at 350℃ for 300 hours; e) Photograph of the specimen after testing at 350℃ for 400 hours. Figure 1 As can be seen, the high-temperature resistant, wave-transparent silicon-based coating provided in this embodiment, after being tested at 350°C for 400 hours, showed that the coating color remained basically unchanged, the cross-cut adhesion was grade 0, the flexibility was 1 mm, and the impact strength was 50 cm.
[0050] Figure 2 The mechanical properties of the coating provided in this embodiment, which is coated with a high-temperature resistant, microwave-transparent silicon-based coating, were tested at 350°C for 400 hours (including two groups of tests, a and b). Figure 2 a) Pre-assessment mechanical test results from left to right: flexibility 1mm, cross-cut test grade 0, impact strength 50cm; Figure 2 b) Mechanical test results after assessment, from left to right: flexibility 1mm, cross-cut test grade 0, impact strength 50cm.
[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A high temperature resistant wave-transparent silicon-based coating, characterized in that, The following components are included by mass fraction: Methyl phenyl silicone resin 40-50 parts; Modified low dielectric filler 5-10 parts; High temperature resistant filler 10-20 parts; High temperature resistant pigment 5-20 parts; Dispersing agent 0.5-2 parts; Leveling agent 0.5-2 parts; Defoaming agent 0.5-2 parts; Diluent 30-50 parts.
2. The high temperature resistant, wave-transparent, silicon-based paint of claim 1, wherein, The modified low dielectric filler is a filler matrix coated with a dopamine modification layer, the dopamine modification layer is dopamine with carboxyl-terminated short-chain polymer grafted to its amino group, and the filler matrix includes at least one of polytetrafluoroethylene powder, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, and fluorinated ethylene propylene copolymer.
3. The high temperature resistant, wave-transparent, silicon-based coating of claim 1, wherein, The high temperature resistant filler includes at least one of low melting point glass powder, rutile titanium dioxide, talc powder, and mica powder, wherein the low melting point glass powder has an initial melting temperature of 270-300°C.
4. The high temperature resistant, wave-transparent, silicon-based coating of claim 1, wherein, The high temperature resistant pigment includes at least one of carbon black, copper-chromium black, cobalt blue, cobalt green, ultramarine, titanium-nickel yellow, and iron-zinc-chromium brown.
5. The high temperature resistant, wave-transparent, silicon-based coating of claim 1, wherein, The leveling agent includes at least one of BYK-310, BYK-361N, and EFKA-3777.
6. The high temperature resistant, wave-transparent, silicon-based coating of claim 1, wherein, The defoaming agent includes at least one of BYK-052, SC-370, and DF-6680.
7. The high temperature resistant, wave-transparent, silicon-based coating of claim 1, wherein, The dispersing agent includes at least one of BYK-346, BYK-LP X 25383, and EFKA-4010.
8. The high temperature resistant, wave-transparent, silicon-based coating of claim 1, wherein, The diluent includes at least one of xylene, propylene glycol methyl ether acetate, and butyl acetate.
9. A method of preparing a high temperature resistant, wave-transparent, silicon-based coating according to any one of claims 1-8, characterized in that, The following steps are included: Preparation of modified low dielectric filler; Add methyl phenyl silicone resin and high temperature resistant filler to the dispersing tank in a predetermined ratio and disperse to a uniform state to obtain a first dispersion liquid; Then add high temperature resistant pigment to the dispersion liquid in a predetermined ratio and disperse to a uniform state to obtain a second dispersion liquid; Then transfer the second dispersion liquid to a ball mill tank for ball milling, after the ball milling is completed, use a screen to sieve, and transfer the sieved second dispersion liquid to a dispersing tank.
10. The production method according to claim 9, wherein The preparation of the modified low dielectric filler includes the following steps: Put the filler matrix in anhydrous ethanol and ultrasonically disperse to remove surface contaminants, centrifuge the precipitate after centrifugation, and dry the precipitate in a vacuum drying oven to obtain a pretreated filler matrix; Prepare a Tris-HCl buffer solution, dissolve dopamine hydrochloride in the buffer solution to prepare a dopamine solution; Add the pretreated filler matrix to the dopamine solution and stir to react, centrifuge and collect the precipitate after the reaction is completed, wash it with deionized water, and dry it in a vacuum drying oven to obtain a filler matrix coated with a dopamine modification layer; Dissolve carboxyl-terminated polymer HOOC-PEG-COOH in DMF to prepare a polymer solution; Add 2-2.5 times the molar ratio of N-hydroxysuccinimide to the polymer solution, activate it, and then add the filler matrix coated with the dopamine modification layer, stir to react, centrifuge and collect the precipitate after the reaction is completed, wash it with deionized water, and dry it in a vacuum drying oven to obtain a modified low dielectric filler.