A preparation process for a corrosion-resistant and heat-dissipating fluorocarbon resin coating

Abstract

This invention discloses a preparation process for a corrosion-resistant and heat-dissipating fluorocarbon resin coating. The process includes the following steps: Step 1: Preparing a polyurethane emulsion; Step 2: Adding the polyurethane emulsion to deionized water, ultrasonically treating it, then sequentially adding sodium bicarbonate, potassium persulfate, vinyl acetate, and modified carbon nanotubes, stirring until homogeneous, removing oxygen, adding trichlorofluoroethylene, raising the temperature to 80-90℃, reacting for 7-8 hours, and after the reaction is complete, cooling to room temperature to obtain the fluorocarbon resin coating. Advantages: This invention uses waterborne polyurethane as an emulsifier and introduces terpolymer-modified carbon nanotubes, effectively improving the overall performance of the fluorocarbon resin coating.

Description

Technical Field

[0001] This invention belongs to the field of coating technology, specifically relating to a preparation process of a corrosion-resistant and heat-dissipating fluorocarbon resin coating. Background Technology

[0002] In the field of coating technology, fluorocarbon resin coatings are widely used due to their excellent weather resistance and chemical stability. However, existing fluorocarbon resin coatings still have some shortcomings in practical applications. On the one hand, their corrosion resistance needs further improvement. When facing complex corrosive environments, the coating is easily eroded by corrosive media, leading to damage to the metal substrate and affecting its service life. On the other hand, insufficient heat dissipation is another major problem. When the coating is applied to equipment or scenarios requiring heat dissipation, the heat cannot be dissipated in time, which may affect the normal operation and performance of the equipment. In addition, the compatibility and bonding strength of the components in existing coatings are also somewhat insufficient, resulting in less than ideal mechanical properties of the coating, such as tensile strength, making it prone to cracking and peeling under external forces.

[0003] Therefore, developing a fluorocarbon resin coating preparation process with better corrosion resistance, good heat dissipation, and excellent mechanical properties is of great practical significance. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a preparation process for a corrosion-resistant and heat-dissipating fluorocarbon resin coating.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A preparation process for a corrosion-resistant and heat-dissipating fluorocarbon resin coating includes the following steps:

[0007] Step 1: Mix polytetrahydrofuran, isophorone diisocyanate, 2,2-dimethylolpropionic acid, and N,N-dimethylformamide, raise the temperature to 60-70℃, and react for 1-2 hours. Then add 1,4-butanediol and dibutyltin dilaurate, continue to raise the temperature to 80-90℃, and react for another 4-5 hours. Cool down to 30-40℃, add triethylamine, stir evenly, and shear disperse in deionized water for 1-2 hours to obtain a polyurethane emulsion.

[0008] Step 2: Add polyurethane emulsion to deionized water and sonicate for 30-40 minutes. Then add sodium bicarbonate, potassium persulfate, vinyl acetate and modified carbon nanotubes in sequence, stir evenly to remove oxygen, add trichlorofluoroethylene, raise the temperature to 80-90℃ and react for 7-8 hours. After the reaction is completed, cool to room temperature to obtain fluorocarbon resin coating.

[0009] More preferably, the polyurethane emulsion raw material comprises the following components by weight: 50-60 parts polytetrahydrofuran, 30-40 parts isophorone diisocyanate, 7-8 parts 2,2-dimethylolpropionic acid, 30-40 parts N,N-dimethylformamide, 1-2 parts 1,4-butanediol, 0.2-0.4 parts dibutyltin dilaurate, and 6-8 parts triethylamine.

[0010] In a more optimized manner, the fluorocarbon resin raw material comprises the following components: by weight, 1-2 parts of polyurethane emulsion, 80-100 parts of deionized water, 0.2-0.3 parts of sodium bicarbonate, 0.1-0.2 parts of potassium persulfate, 8-10 parts of vinyl acetate, 0.3-0.4 parts of modified carbon nanotubes, and 25-30 parts of trichlorofluoroethylene.

[0011] In a more optimized manner, the preparation process of the modified carbon nanotubes is as follows:

[0012] S1: Add 2-amino-4-hydroxy-6-methylpyrimidine to anhydrous dimethyl sulfoxide and stir at 170-180℃ for 10-15 min. Then cool the reaction solution to 0℃, slowly add ethyl isocyanate of methacrylate, react for 1-2 h, centrifuge, wash, and obtain the modified monomer.

[0013] S2: Mix the modified monomer, vinyl acetate, maleic anhydride, and N,N-dimethylformamide, raise the temperature to 60-70℃, slowly add azobisisobutyronitrile solution, and after the addition is complete, reflux the reaction for 10-12 hours. After the reaction is completed, perform post-treatment to obtain the terpolymer.

[0014] S3: Carbon nanotubes were added to ethyl acetate, followed by 3-aminopropyltriethoxysilane and deionized water. The temperature was raised to 70-80℃ and refluxed for 10-12 hours. The mixture was then filtered, washed, and aminated carbon nanotubes were obtained. Subsequently, the terpolymer, N,N-dimethylformamide, and aminated carbon nanotubes were mixed and stirred at room temperature for 4-5 hours. The mixture was then filtered, washed, and dried to obtain modified carbon nanotubes.

[0015] In this scheme, the amino group of 2-amino-4-hydroxy-6-methylpyrimidine undergoes a nucleophilic addition reaction with the isocyanate group of ethyl methacrylate. The specific reaction process is as follows:

[0016]

[0017] More preferably, the modified monomer raw material includes the following components: by weight, 4-5 parts of 2-amino-4-hydroxy-6-methylpyrimidine, 50-60 parts of anhydrous dimethyl sulfoxide, and 5-6 parts of ethyl isocyanate methacrylate.

[0018] In this scheme, the copolymerization of three monomers is achieved through free radical polymerization. The thermal decomposition of azobisisobutyronitrile generates free radicals that initiate chain growth, forming a branched copolymer structure with pyrimidine ring side groups. The specific reaction process is shown below:

[0019]

[0020] More preferably, the terpolymer raw material comprises the following components: by weight, 10-12 parts of modified monomer, 15-18 parts of vinyl acetate, 5-6 parts of maleic anhydride, 70-80 parts of N,N-dimethylformamide, and 2-3 parts of azobisisobutyronitrile solution; wherein the concentration of the azobisisobutyronitrile solution is 10 wt%.

[0021] In this scheme, 3-aminopropyltriethoxysilane undergoes hydrolytic condensation to form siloxane bonds on the surface of carbon oxide nanotubes. The terpolymer then reacts with these bonds to obtain modified carbon nanotubes. The specific reaction process is shown below:

[0022]

[0023] In a more optimized manner, the aminated carbon nanotube raw material comprises the following components: by weight, 10-12 parts carbon nanotube oxide, 100-120 parts ethyl acetate, 0.5-1 parts 3-aminopropyltriethoxysilane, and 0.3-1 parts deionized water.

[0024] In a more optimized manner, the modified carbon nanotube raw material comprises the following components: by weight, 10-20 parts of terpolymer, 70-80 parts of N,N-dimethylformamide, and 5-6 parts of aminated carbon nanotubes.

[0025] The beneficial effects of this invention are:

[0026] This invention uses waterborne polyurethane as an emulsifier and introduces terpolymer-modified carbon nanotubes, effectively improving the overall performance of fluorocarbon resin coatings. Specifically:

[0027] Firstly, the proposed solution utilizes a synthesized amphiphilic polyurethane emulsion as an emulsifier for the fluorocarbon coating. This emulsion effectively encapsulates monomers such as trifluorochloroethylene, allowing them to copolymerize and form a core-shell structure. Simultaneously, the polyurethane segments can crosslink with modified carbon nanotubes via hydrogen bonds, enhancing the coating's mechanical properties.

[0028] Secondly, the proposed solution involves grafting a ternary copolymer onto the surface of carbon nanotubes. The nitrogen atoms in the modified monomers of the ternary copolymer can form coordination bonds with empty orbitals on the metal substrate surface, creating a chemical anchoring layer at the coating-metal interface. This enhances adhesion while inhibiting electron migration, effectively blocking corrosion pathways from an electrochemical perspective. Furthermore, this coordination effect can combine with the physical barrier of the polyurethane shell, forming a dual anti-corrosion mechanism of "chemical barrier-physical shielding," further improving the coating's salt spray resistance. In addition, because the ternary copolymer contains the same monomers as the fluorocarbon resin, during copolymerization, the polymer segments on the carbon nanotube surface can gradually entangle with the resin molecular chains, causing the carbon nanotubes to form an interconnected three-dimensional network structure during curing, thus improving the material's thermal conductivity. Detailed Implementation

[0029] 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.

[0030] Example 1: A preparation process for a corrosion-resistant and heat-dissipating fluorocarbon resin coating, comprising the following steps:

[0031] Step 1: Mix 50 parts of polytetrahydrofuran, 30 parts of isophorone diisocyanate, 7 parts of 2,2-dimethylolpropionic acid, and 30 parts of N,N-dimethylformamide. Raise the temperature to 60°C and react for 1 hour. Then add 1 part of 1,4-butanediol and 0.2 parts of dibutyltin dilaurate. Continue to raise the temperature to 80°C and react for another 4 hours. Cool down to 30°C, add 6 parts of triethylamine, stir evenly, and shear disperse in deionized water for 1 hour to obtain a polyurethane emulsion.

[0032] Step 2: Add 1 part of polyurethane emulsion to 80 parts of deionized water and sonicate for 30 min. Then add 0.2 parts of sodium bicarbonate, 0.1 parts of potassium persulfate, 8 parts of vinyl acetate, and 0.3 parts of modified carbon nanotubes in sequence. Stir evenly to remove oxygen. Add 25 parts of trichlorofluoroethylene and raise the temperature to 80℃. React for 7 h. After the reaction is completed, cool to room temperature to obtain fluorocarbon resin coating.

[0033] The preparation process of modified carbon nanotubes is as follows:

[0034] S1: Add 4 parts of 2-amino-4-hydroxy-6-methylpyrimidine to 50 parts of anhydrous dimethyl sulfoxide, stir at 170°C for 10 min, then cool the reaction solution to 0°C, slowly add 5 parts of ethyl isocyanate methacrylate, react for 1 h, centrifuge, wash, and obtain the modified monomer.

[0035] S2: Mix 10 parts of modified monomer, 15 parts of vinyl acetate, 5 parts of maleic anhydride, and 70 parts of N,N-dimethylformamide. Raise the temperature to 60°C and slowly add 2 parts of azobisisobutyronitrile solution (10 wt% concentration, N,N-dimethylformamide as solvent). After the addition is complete, reflux the reaction for 10 hours. After the reaction is complete, perform post-treatment to obtain the terpolymer.

[0036] S3: 10 parts of carbon oxide nanotubes were added to 100 parts of ethyl acetate, along with 0.5 parts of 3-aminopropyltriethoxysilane and 0.3 parts of deionized water. The temperature was raised to 70°C and refluxed for 10 hours. The mixture was then filtered, washed, and aminated carbon nanotubes were obtained. Subsequently, 10 parts of terpolymer, 70 parts of N,N-dimethylformamide, and 5 parts of aminated carbon nanotubes were mixed and stirred at room temperature for 4 hours. The mixture was then filtered, washed, and dried to obtain modified carbon nanotubes.

[0037] Example 2: A preparation process for a corrosion-resistant and heat-dissipating fluorocarbon resin coating, comprising the following steps:

[0038] Step 1: Mix 60 parts of polytetrahydrofuran, 40 parts of isophorone diisocyanate, 8 parts of 2,2-dimethylolpropionic acid, and 40 parts of N,N-dimethylformamide. Raise the temperature to 70°C and react for 2 hours. Then add 2 parts of 1,4-butanediol and 0.4 parts of dibutyltin dilaurate. Continue to raise the temperature to 90°C and react for another 5 hours. Cool down to 40°C, add 8 parts of triethylamine, stir evenly, and shear disperse in deionized water for 2 hours to obtain a polyurethane emulsion.

[0039] Step 2: Add 2 parts of polyurethane emulsion to 100 parts of deionized water and sonicate for 40 min. Then add 0.3 parts of sodium bicarbonate, 0.2 parts of potassium persulfate, 10 parts of vinyl acetate, and 0.4 parts of modified carbon nanotubes in sequence. Stir well to remove oxygen. Add 30 parts of trichlorofluoroethylene and raise the temperature to 90℃. React for 8 h. After the reaction is completed, cool to room temperature to obtain fluorocarbon resin coating.

[0040] The preparation process of modified carbon nanotubes is as follows:

[0041] S1: Add 5 parts of 2-amino-4-hydroxy-6-methylpyrimidine to 60 parts of anhydrous dimethyl sulfoxide, stir at 180°C for 15 min, then cool the reaction solution to 0°C, slowly add 6 parts of ethyl isocyanate methacrylate, react for 2 h, centrifuge, wash, and obtain the modified monomer.

[0042] S2: Mix 12 parts of modified monomer, 18 parts of vinyl acetate, 6 parts of maleic anhydride, and 80 parts of N,N-dimethylformamide. Raise the temperature to 70°C and slowly add 3 parts of azobisisobutyronitrile solution (10 wt% concentration, N,N-dimethylformamide as solvent). After the addition is complete, reflux the reaction for 12 hours. After the reaction is complete, perform post-treatment to obtain the terpolymer.

[0043] S3: 12 parts of carbon oxide nanotubes were added to 120 parts of ethyl acetate, along with 1 part of 3-aminopropyltriethoxysilane and 1 part of deionized water. The temperature was raised to 80°C and refluxed for 12 hours. The mixture was then filtered, washed, and aminated carbon nanotubes were obtained. Subsequently, 20 parts of terpolymer, 80 parts of N,N-dimethylformamide, and 6 parts of aminated carbon nanotubes were mixed and stirred at room temperature for 5 hours. The mixture was then filtered, washed, and dried to obtain modified carbon nanotubes.

[0044] Example 3: A preparation process for a corrosion-resistant and heat-dissipating fluorocarbon resin coating, comprising the following steps:

[0045] Step 1: Mix 55 parts of polytetrahydrofuran, 35 parts of isophorone diisocyanate, 7.5 parts of 2,2-dimethylolpropionic acid, and 35 parts of N,N-dimethylformamide. Raise the temperature to 65°C and react for 1.5 hours. Then add 1.5 parts of 1,4-butanediol and 0.3 parts of dibutyltin dilaurate. Continue to raise the temperature to 85°C and react for another 4.5 hours. Cool down to 35°C, add 7 parts of triethylamine, stir evenly, and shear disperse in deionized water for 1.5 hours to obtain a polyurethane emulsion.

[0046] Step 2: Add 1.5 parts of polyurethane emulsion to 90 parts of deionized water and sonicate for 35 minutes. Then add 0.25 parts of sodium bicarbonate, 0.15 parts of potassium persulfate, 9 parts of vinyl acetate, and 0.35 parts of modified carbon nanotubes in sequence. Stir well to remove oxygen. Add 27.5 parts of trichlorofluoroethylene and raise the temperature to 85°C. React for 7.5 hours. After the reaction is completed, cool to room temperature to obtain fluorocarbon resin coating.

[0047] The preparation process of modified carbon nanotubes is as follows:

[0048] S1: Add 4.5 parts of 2-amino-4-hydroxy-6-methylpyrimidine to 55 parts of anhydrous dimethyl sulfoxide, stir at 175℃ for 12.5 min, then cool the reaction solution to 0℃, slowly add 5.5 parts of ethyl isocyanate methacrylate, react for 1.5 h, centrifuge, wash, and obtain the modified monomer.

[0049] S2: Mix 11 parts of modified monomer, 16.5 parts of vinyl acetate, 5.5 parts of maleic anhydride, and 75 parts of N,N-dimethylformamide. Raise the temperature to 65°C and slowly add 2.5 parts of azobisisobutyronitrile solution (the concentration of azobisisobutyronitrile solution is 10wt%, and the solvent is N,N-dimethylformamide). After the addition is complete, reflux the reaction for 11 hours. After the reaction is completed, perform post-treatment to obtain the terpolymer.

[0050] S3: 11 parts of carbon nanotubes were added to 110 parts of ethyl acetate, along with 0.75 parts of 3-aminopropyltriethoxysilane and 0.65 parts of deionized water. The temperature was raised to 75°C and refluxed for 11 hours. The mixture was then filtered, washed, and aminated carbon nanotubes were obtained. Subsequently, 15 parts of terpolymer, 75 parts of N,N-dimethylformamide, and 5.5 parts of aminated carbon nanotubes were mixed and stirred at room temperature for 4.5 hours. The mixture was then filtered, washed, and dried to obtain modified carbon nanotubes.

[0051] Comparative Example 1: No modified carbon nanotubes were added; all other aspects were the same as in Example 3, as detailed below:

[0052] Step 1: Mix 55 parts of polytetrahydrofuran, 35 parts of isophorone diisocyanate, 7.5 parts of 2,2-dimethylolpropionic acid, and 35 parts of N,N-dimethylformamide. Raise the temperature to 65°C and react for 1.5 hours. Then add 1.5 parts of 1,4-butanediol and 0.3 parts of dibutyltin dilaurate. Continue to raise the temperature to 85°C and react for another 4.5 hours. Cool down to 35°C, add 7 parts of triethylamine, stir evenly, and shear disperse in deionized water for 1.5 hours to obtain a polyurethane emulsion.

[0053] Step 2: Add 1.5 parts of polyurethane emulsion to 90 parts of deionized water and sonicate for 35 minutes. Then add 0.25 parts of sodium bicarbonate, 0.15 parts of potassium persulfate, and 9 parts of vinyl acetate in sequence. Stir well to remove oxygen. Add 27.5 parts of trichlorofluoroethylene and raise the temperature to 85°C. React for 7.5 hours. After the reaction is complete, cool to room temperature to obtain fluorocarbon resin coating.

[0054] Comparative Example 2: This example does not use a polyurethane emulsion; all other aspects are the same as in Example 3, as detailed below:

[0055] 0.1 parts sodium dodecyl sulfate and 80 parts deionized water were mixed and ultrasonically dispersed. Then, 0.25 parts sodium bicarbonate, 0.15 parts potassium persulfate, 9 parts vinyl acetate, and 0.35 parts modified carbon nanotubes were added sequentially and stirred until homogeneous to remove oxygen. 27.5 parts trichlorofluoroethylene were added, the temperature was raised to 85°C, and the reaction was carried out for 7.5 hours. After the reaction was completed, the mixture was cooled to room temperature to obtain a fluorocarbon resin coating.

[0056] Testing and experimentation:

[0057] The fluorocarbon resin coatings obtained in the examples and comparative examples were drop-coated onto a substrate (tinplate) and dried at 50°C for 48 hours to form a thin film. The following tests were then conducted:

[0058] (1) The tensile strength of each coating in the examples and comparative examples was measured in accordance with GB / T 13477.8-2002 standard;

[0059] (2) Evaluate the adhesion of each coating to the substrate in the examples and comparative examples according to GB / T 9286-1998 standard;

[0060] (3) The samples obtained in the examples and comparative examples were artificially scratched, and then placed in a salt spray chamber and sprayed continuously for 30 days. The appearance was then observed.

[0061] (4) The thermal conductivity of each specimen in the examples and comparative examples was measured using the laser flare method (ASTM E1461);

[0062] The obtained data is shown in the table below:

[0063]

[0064] Table 1

[0065] Conclusion: This invention significantly improves the overall performance of fluorocarbon resin coatings by introducing waterborne polyurethane emulsion as an emulsifier and using terpolymer-modified carbon nanotubes. Data from the examples and comparative examples show that Examples 1, 2, and 3, which contain modified carbon nanotubes and use polyurethane emulsion, exhibit coating tensile strengths of 7.89-7.99 MPa, adhesion grades of 1, thermal conductivity of 4.2-4.5 W / (mk), and no significant corrosion after 30 days of salt spray testing. In contrast, Comparative Example 1 (without modified carbon nanotubes) shows a tensile strength reduced to 5.98 MPa, a thermal conductivity of only 2.1 (W / (mk)), and slight corrosion in the salt spray test. Comparative Example 2 (without polyurethane emulsion) shows a tensile strength as low as 4.68 MPa, adhesion grade of 2, and weaker heat dissipation and corrosion resistance compared to the examples. The results show that the core-shell structure of the polyurethane emulsion, together with the dual anti-corrosion mechanism of "chemical barrier-physical shielding" and the thermally conductive mesh structure of the modified carbon nanotubes, effectively enhances the mechanical strength, adhesion, salt spray resistance and thermal conductivity of the coating, verifying the scientific nature and practicality of the preparation process of this invention.

[0066] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A preparation process for a corrosion-resistant and heat-dissipating fluorocarbon resin coating, characterized in that: Comprise the following steps: Step 1: polytetrahydrofuran, isophorone diisocyanate, 2,2-dimethylol propionic acid, N,N-dimethylformamide is mixed, the temperature is raised to 60-70℃, reaction 1-2h, then 1,4-butanediol and dibutyltin dilaurate is added, continue to warm to 80-90℃, reaction 4-5h, cooling to 30-40℃, triethylamine is added, stirring uniform, in deionized water shear dispersion 1-2h, the polyurethane emulsion is obtained; Step 2: the polyurethane emulsion is added to deionized water, ultrasonic treatment 30-40min, then sodium bicarbonate, potassium persulfate, vinyl acetate, modified carbon nanotube is added in turn, stirring uniform, remove oxygen, add chlorotrifluoroethylene, the temperature is raised to 80-90℃, reaction 7-8h, after the reaction is completed, cooling to room temperature, the fluorocarbon resin coating is obtained; Wherein, the preparation process of the modified carbon nanotube is: S1: 2-amino-4-hydroxy-6-methyl pyrimidine is added to anhydrous dimethyl sulfoxide, stirring at 170-180℃ for 10-15min, then the reaction liquid is cooled to 0℃, methyl methacrylate isocyanate is slowly added, reaction 1-2h, centrifugation, washing, the modified monomer is obtained; S2: the modified monomer, vinyl acetate, maleic anhydride, N,N-dimethylformamide is mixed, the temperature is raised to 60-70℃, azobisisobutyronitrile solution is slowly added, after the addition is completed, reflux reaction 10-12h, after the reaction is completed, post-processing, the terpolymer is obtained; S3: the oxidized carbon nanotube is added to ethyl acetate, 3-aminopropyl triethoxysilane and deionized water is added, the temperature is raised to 70-80℃, reflux reaction 10-12h, filtration, washing, the aminated carbon nanotube is obtained; then the terpolymer, N,N-dimethylformamide, aminated carbon nanotube is mixed, stirring at room temperature for 4-5h, filtration, washing, drying, the modified carbon nanotube is obtained.

2. The preparation process of the corrosion-resistant heat-dissipating fluorocarbon resin paint according to claim 1, characterized in that: The polyurethane emulsion raw material comprises the following components: by weight fraction, 50-60 parts of polytetrahydrofuran, 30-40 parts of isophorone diisocyanate, 7-8 parts of 2,2-dimethylol propionic acid, 30-40 parts of N,N-dimethylformamide, 1-2 parts of 1,4-butanediol, 0.2-0.4 parts of dibutyltin dilaurate, 6-8 parts of triethylamine.

3. The preparation process of the corrosion-resistant heat-dissipating fluorocarbon resin coating according to claim 1, characterized in that: The fluorocarbon resin coating raw material comprises the following components: by weight fraction, 1-2 parts of polyurethane emulsion, 80-100 parts of deionized water, 0.2-0.3 parts of sodium bicarbonate, 0.1-0.2 parts of potassium persulfate, 8-10 parts of vinyl acetate, 0.3-0.4 parts of modified carbon nanotube, 25-30 parts of chlorotrifluoroethylene.

4. The preparation process of the corrosion-resistant heat-dissipating fluorocarbon resin paint according to claim 1, characterized in that: The modified monomer raw material comprises the following components: by weight fraction, 4-5 parts of 2-amino-4-hydroxy-6-methyl pyrimidine, 50-60 parts of anhydrous dimethyl sulfoxide, 5-6 parts of methyl methacrylate isocyanate.

5. The preparation process of the corrosion-resistant heat-dissipating fluorocarbon resin coating according to claim 1, characterized in that: The raw material of the terpolymer comprises the following components: 10-12 parts of modified monomer, 15-18 parts of vinyl acetate, 5-6 parts of maleic anhydride, 70-80 parts of N,N-dimethylformamide, and 2-3 parts of azobisisobutyronitrile solution; wherein the concentration of the azobisisobutyronitrile solution is 10wt%.

6. The preparation process of the corrosion-resistant heat-dissipating fluorocarbon resin paint according to claim 1, characterized in that: The raw material of the amino carbon nanotube comprises the following components: 10-12 parts of oxidized carbon nanotube, 100-120 parts of ethyl acetate, 0.5-1 part of 3-aminopropyl triethoxysilane, and 0.3-1 part of deionized water.

7. The preparation process of the corrosion-resistant heat-dissipating fluorocarbon resin paint according to claim 1, characterized in that: The raw material of the modified carbon nanotube comprises the following components: 10-20 parts of terpolymer, 70-80 parts of N,N-dimethylformamide, and 5-6 parts of amino carbon nanotube.

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