A wear-resistant heat-conducting paint and a preparation method thereof

Abstract

This application provides a wear-resistant thermally conductive coating and its preparation method. The wear-resistant thermally conductive coating comprises, by weight parts: 100 parts of acrylate monomer, 200-400 parts of modified thermally conductive powder, 1-3 parts of initiator, 0.5-2 parts of polymerization inhibitor, 3-6 parts of adhesion promoter, and 2-5 parts of antioxidant; wherein the acrylate monomer includes monofunctional and polyfunctional monomers, and the mass ratio of the monofunctional monomer to the polyfunctional monomer is 1:0.05-0.3. By using a blend of monofunctional and polyfunctional acrylate monomers, and controlling the mass ratio to 1:0.05-0.3, the monofunctional monomer provides flexibility, while the polyfunctional monomer increases the degree of crosslinking, resulting in a thermally conductive coating that, after curing, possesses both toughness and wear and scratch resistance. The addition of an adhesion promoter further enhances the adhesion between the coating and the radiator substrate.

Description

Technical Field

[0001] This application relates to the field of thermal interface materials technology, and in particular to a wear-resistant thermally conductive coating and its preparation method. Background Technology

[0002] With the rapid development of optical communication technology, optical modules have become crucial due to their high-speed transmission capabilities. The lasers, modulators, photodetectors, and digital signal processors integrated within optical modules inevitably generate a significant amount of heat during high-speed operation. If heat dissipation is not timely and effective, the module temperature may become excessively high, affecting optical signal quality and even directly impacting the performance and lifespan of the entire system.

[0003] Currently, the industry generally adopts two methods to address heat dissipation challenges: one is to improve the flatness of the contact surface between the heat sink and the optical module through ultra-precision machining, thereby reducing the air thermal resistance between the interface and the overall thermal resistance. However, this method requires high precision in the manufacturing process of the device, resulting in a surge in production costs. The other method is to use thermally conductive interface materials to fill the microscopic uneven areas of the contact surface between the heat sink and the optical module. However, existing thermally conductive interface materials are prone to interface peeling or wear failure under frequent insertion and removal conditions. Summary of the Invention

[0004] In view of the aforementioned problems, this application is made to provide a wear-resistant and thermally conductive coating and a method for preparing the same, which overcomes or at least partially solves the problems, comprising:

[0005] A wear-resistant and thermally conductive coating comprises, by weight parts: 100 parts of acrylate monomer, 200-400 parts of modified thermally conductive powder, 1-3 parts of initiator, 0.5-2 parts of polymerization inhibitor, 3-6 parts of adhesion promoter, and 2-5 parts of antioxidant; wherein the acrylate monomer includes monofunctional monomers and polyfunctional monomers, and the mass ratio of the monofunctional monomer to the polyfunctional monomer is 1:0.05-0.3.

[0006] Preferably, the monofunctional monomer includes at least one of lauryl acrylate and octadecyl acrylate; the polyfunctional monomer includes at least one of trimethylolpropane triacrylate, pentaerythritol triacrylate, and pentaerythritol tetraacrylate.

[0007] Preferably, the modified thermally conductive powder is obtained by surface treatment of thermally conductive powder with methacryloxysilane.

[0008] Preferably, the thermally conductive powder comprises at least one of aluminum oxide, aluminum hydroxide, zinc oxide, aluminum nitride, and boron nitride; the particle size of the thermally conductive powder is less than 20 μm.

[0009] Preferably, the methacryloyloxysilane includes at least one of 3-methacryloyloxypropyltrimethoxysilane, 3-methacryloyloxypropyltriethoxysilane, 3-methacryloyloxypropylmethyldimethoxysilane, 3-methacryloyloxypropylmethyldiethoxysilane, and 3-methacryloyloxypropyltriisopropoxysilane.

[0010] Preferably, the initiator includes at least one selected from benzoyl peroxide, tert-butyl peroxy-2-ethylhexyl ester, 1,1-bis(tert-pentylperoxy)cyclohexane, and tert-pentyl peroxy-benzoate.

[0011] Preferably, the polymerization inhibitor comprises at least one selected from p-hydroxyanisole, hydroquinone, 2,6-di-tert-butyl-4-methylphenol, 2-tert-butylhydroquinone, and 2,5-di-tert-butylhydroquinone.

[0012] Preferably, the adhesion promoter comprises at least one of alkyl acrylate phosphate, hydroxyethyl methacrylate phosphate, and β-acryloyloxypropionic acid.

[0013] Preferably, the antioxidant comprises at least one of tris(2,4-di-tert-butylphenyl) phosphite, pentaerythritol tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, and 4,4'-methylenebis(2,6-di-tert-butylphenol).

[0014] A method for preparing a wear-resistant and thermally conductive coating as described in any of the above claims, comprising:

[0015] The acrylate monomer, modified thermally conductive powder, initiator, polymerization inhibitor, adhesion promoter and antioxidant are mixed according to the formula to obtain a premixed wear-resistant thermally conductive coating.

[0016] The premixed wear-resistant and thermally conductive coating is subjected to vacuum degassing treatment to obtain the wear-resistant and thermally conductive coating.

[0017] This application has the following advantages:

[0018] To address the problem that existing thermally conductive interface materials are prone to interface peeling or wear failure under frequent insertion and removal conditions, this application provides a solution to improve the wear resistance of thermally conductive interface materials by using a compound of monofunctional and polyfunctional monomers. Specifically, it provides a wear-resistant thermally conductive coating, comprising, by weight parts: 100 parts of acrylate monomer, 200-400 parts of modified thermally conductive powder, 1-3 parts of initiator, 0.5-2 parts of polymerization inhibitor, 3-6 parts of adhesion promoter, and 2-5 parts of antioxidant; wherein the acrylate monomer includes monofunctional and polyfunctional monomers, and the mass ratio of the monofunctional monomer to the polyfunctional monomer is 1:0.05-0.3.

[0019] By using a blend of monofunctional and polyfunctional acrylate monomers, and controlling the mass ratio to 1:0.05–0.3, the monofunctional monomers provide flexibility, while the polyfunctional monomers increase the degree of crosslinking. This results in a thermally conductive coating that, after curing, possesses both toughness and abrasion and scratch resistance. If the proportion of monofunctional monomers is too high, the abrasion resistance of the coating will deteriorate; if the proportion of polyfunctional monomers is too high, the toughness of the coating will deteriorate, and the adhesion to the substrate will decrease. By adding an adhesion promoter, the adhesion between the coating and the radiator substrate is further improved. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only a part of the embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a flowchart of the first part of the preparation method of the wear-resistant and thermally conductive coating provided in an embodiment of this application;

[0022] Figure 2 This is a flowchart of the second part of the preparation method of the wear-resistant and thermally conductive coating provided in an embodiment of this application. Detailed Implementation

[0023] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] The inventors, through analysis of existing technologies, discovered that most thermal interface materials currently used in optical modules achieve heat dissipation through composite materials. For example, patent CN109866477A discloses a composite thermal interface material suitable for insertion / removal scenarios between optical modules and housing heat sinks, consisting of a thermally conductive layer, an adhesive layer, and a wear-resistant layer. The wear-resistant layer provides scratch resistance, the adhesive layer is used to bond the heat sink, and the thermally conductive layer provides thermal conductivity. Another example is patent CN108184316A, which provides a friction-resistant high thermal conductivity sheet including a thermally conductive layer and a wear-resistant layer. The wear-resistant layer improves wear resistance, while the thermally conductive layer protected by the wear-resistant layer improves interfacial thermal resistance. These thermally conductive composite materials require bonding several materials together, making the preparation method complex, and the tightness of the bonding between each layer affects the overall thermal resistance.

[0025] In addition, there are solutions to improve wear resistance through component optimization, such as the wear-resistant non-silicone thermally conductive composition disclosed in patent CN115926755A, which consists of thermally conductive powder, wear-resistant powder, resin, acrylate monomer, plasticizer, and antioxidant. It achieves the friction resistance of the thermally conductive material by adding wear-resistant powder. However, the wear-resistant powder has poor thermal conductivity, indirectly reducing the amount of thermally conductive powder to be filled, and it cannot improve the adhesion between the thermally conductive composition and the heat sink.

[0026] In one embodiment of this application, a wear-resistant and thermally conductive coating is provided, comprising, by weight parts: 100 parts of acrylate monomer, 200-400 parts of modified thermally conductive powder, 1-3 parts of initiator, 0.5-2 parts of polymerization inhibitor, 3-6 parts of adhesion promoter, and 2-5 parts of antioxidant; wherein the acrylate monomer includes monofunctional monomers and polyfunctional monomers, and the mass ratio of the monofunctional monomer to the polyfunctional monomer is 1:0.05-0.3.

[0027] By using a blend of monofunctional and polyfunctional acrylate monomers, and controlling the mass ratio to 1:0.05–0.3, the monofunctional monomers provide flexibility, while the polyfunctional monomers increase the degree of crosslinking. This results in a thermally conductive coating that, after curing, possesses both toughness and abrasion and scratch resistance. If the proportion of monofunctional monomers is too high, the abrasion resistance of the coating will deteriorate; if the proportion of polyfunctional monomers is too high, the toughness of the coating will deteriorate, and the adhesion to the substrate will decrease. By adding an adhesion promoter, the adhesion between the coating and the radiator substrate is further improved.

[0028] The wear-resistant and thermally conductive coating provided in this exemplary embodiment will now be further described.

[0029] In one embodiment of this application, the monofunctional monomer includes at least one of lauryl acrylate and octadecyl acrylate; the polyfunctional monomer includes at least one of trimethylolpropane triacrylate, pentaerythritol triacrylate, and pentaerythritol tetraacrylate.

[0030] In one embodiment of this application, the modified thermally conductive powder is obtained by surface treatment of thermally conductive powder with methacryloxysilane. Methacryloxysilane surface treatment increases the wettability between the thermally conductive powder and the acrylate monomers, which is beneficial for powder dispersion and reduces the thermal resistance of the coating. Simultaneously, methacryloxysilane can participate in the crosslinking of the acrylate monomers, thereby chemically linking the thermally conductive powder and the acrylate monomers together, further improving the wear resistance of the coating and enhancing the adhesion between the coating and the heat sink substrate.

[0031] In one embodiment of this application, the thermally conductive powder includes at least one of aluminum oxide, aluminum hydroxide, zinc oxide, aluminum nitride, and boron nitride; the particle size of the thermally conductive powder is less than 20 μm. By controlling the particle size of the thermally conductive powder to be less than 20 μm, the BLT (Bondline Thickness) of the thermally conductive coating can be reduced, thereby achieving lower thermal resistance.

[0032] In one embodiment of this application, the methacryloxysilane includes at least one of 3-methacryloxypropyltrimethoxysilane (CAS: 2530-85-0), 3-methacryloxypropyltriethoxysilane (CAS: 21142-29-0), 3-methacryloxypropylmethyldimethoxysilane (CAS: 14513-34-9), 3-methacryloxypropylmethyldiethoxysilane (CAS: 65100-04-1), and 3-methacryloxypropyltriisopropoxysilane (CAS: 80750-05-6).

[0033] In one embodiment of this application, the initiator includes at least one selected from benzoyl peroxide (BPO), tert-butyl peroxide (TBPO), 1,1-bis(tert-pentylperoxy)cyclohexane, and tert-amyl peroxide (TAPB). The initiator enables thermal crosslinking of the acrylate monomer.

[0034] In one embodiment of this application, the polymerization inhibitor includes at least one selected from p-hydroxyanisole, hydroquinone, 2,6-di-tert-butyl-4-methylphenol, 2-tert-butylhydroquinone, and 2,5-di-tert-butylhydroquinone. The polymerization inhibitor can inhibit the polymerization of acrylate monomers at room temperature, but it fails at high temperatures, thus giving the coating room temperature storage stability.

[0035] In one embodiment of this application, the adhesion promoter includes at least one selected from alkyl acrylate phosphate (KM2130), hydroxyethyl methacrylate phosphate (KM2110), and β-acryloyloxypropionic acid (β-CEA). The adhesion promoter is used to further enhance the adhesion between the coating and the radiator substrate.

[0036] In one embodiment of this application, the antioxidant includes at least one of tris(2,4-di-tert-butylphenyl) phosphite (antioxidant 168), pentaerythritol tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] (antioxidant 1010), 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane (antioxidant CA), and 4,4'-methylenebis(2,6-di-tert-butylphenol) (antioxidant 702). The antioxidant can effectively inhibit or delay the decomposition or degradation of organic polymers such as silicone grease due to oxidation reactions during manufacturing or use, thereby improving the product's lifespan.

[0037] Reference Figure 1 In one embodiment of this application, a method for preparing a wear-resistant and thermally conductive coating as described in any of the above embodiments is also provided, comprising:

[0038] S110. According to the formula, acrylate monomer, modified thermally conductive powder, initiator, polymerization inhibitor, adhesion promoter and antioxidant are stirred and mixed to obtain a premixed wear-resistant thermally conductive coating.

[0039] S120. The premixed wear-resistant and thermally conductive coating is subjected to vacuum degassing treatment to obtain the wear-resistant and thermally conductive coating.

[0040] The preparation method of the wear-resistant and thermally conductive coating provided in this exemplary embodiment will be further described below.

[0041] As described in step S110, the acrylate monomer, modified thermally conductive powder, initiator, polymerization inhibitor, adhesion promoter and antioxidant are stirred and mixed according to the formula to obtain a premixed wear-resistant thermally conductive coating.

[0042] According to the formula, acrylate monomers, modified thermally conductive powder, initiator, polymerization inhibitor, adhesion promoter and antioxidant are stirred and mixed at room temperature for 20-30 minutes to obtain a premixed wear-resistant thermally conductive coating.

[0043] As described in step S120, the premixed wear-resistant and thermally conductive coating is subjected to vacuum degassing treatment to obtain the wear-resistant and thermally conductive coating.

[0044] The premixed thermal grease was subjected to vacuum degassing treatment for 5 to 10 minutes at a vacuum level of -0.1 to -0.08 MPa to obtain a wear-resistant thermally conductive coating.

[0045] Reference Figure 2 In one embodiment of this application, the method further includes:

[0046] S010. Add the thermally conductive powder and methacryloxysilane to an organic solvent, add an organic amine catalyst dropwise, stir at room temperature for 5 to 15 minutes, then heat to 60 to 80°C and stir for 25 to 35 minutes to allow the thermally conductive powder and methacryloxysilane to react fully.

[0047] S020, vacuum removal of the organic solvent and the organic amine catalyst to obtain modified thermally conductive powder.

[0048] As described in step S010, the thermally conductive powder and methacryloxysilane are added to an organic solvent, an organic amine catalyst is added dropwise, and the mixture is stirred at room temperature for 5 to 15 minutes. Then, it is heated to 60 to 80°C and stirred for 25 to 35 minutes to allow the thermally conductive powder and the methacryloxysilane to react fully.

[0049] Thermally conductive powder and methacryloxysilane are added to an organic solvent, and an organic amine catalyst is added dropwise. The mixture is stirred at room temperature for 5–15 min using a planetary stirrer, and then heated to 60–80 °C and stirred for 25–35 min to allow the thermally conductive powder and the methacryloxysilane to react fully. The organic solvent includes at least one of cyclohexane and cyclohexanone. The organic amine catalyst includes at least one of triethylamine, N-methyltetrahydropyrrole, and N-methylhexahydropyridine. The organic amine catalyst is used to accelerate the modification reaction between the silane and the surface of the thermally conductive powder.

[0050] As described in step S020, the organic solvent and the organic amine catalyst are removed by vacuuming to obtain the modified thermally conductive powder.

[0051] After the reaction is complete, the organic solvent and the organic amine catalyst are removed by vacuum to obtain the modified thermally conductive powder.

[0052] Example 1

[0053] By weight, 90 parts lauryl acrylate, 10 parts trimethylolpropane triacrylate, 100 parts 3-methacryloyloxypropyltriethoxysilane modified alumina (D50: 1 μm, D100: 15 μm), 150 parts 3-methacryloyloxypropyltriethoxysilane modified aluminum hydroxide (D50: 2.5 μm, D100: 15 μm), 1 part TBPO, 1 part hydroquinone, 3 parts KM2130 and 4 parts antioxidant 702 were mixed at room temperature for 20 min, and then degassed and stirred under vacuum of -0.08 MPa for 10 min to obtain a wear-resistant and thermally conductive coating.

[0054] Example 2

[0055] By weight, 95.2 parts lauryl acrylate, 4.8 parts pentaerythritol tetraacrylate, 240 parts 3-methacryloyloxypropyltriisopropoxysilane modified aluminum nitride (D50: 2μm, D100: 17μm), 1.3 parts BPO, 1.6 parts 2-tert-butylhydroquinone, 3.6 parts KM2130 and 5 parts antioxidant 1010 were mixed at room temperature for 25 min, and then degassed and stirred under vacuum of -0.1 MPa for 5 min to obtain a wear-resistant and thermally conductive coating.

[0056] Example 3

[0057] By weight, 87 parts lauryl acrylate, 13 parts pentaerythritol triacrylate, 300 parts 3-methacryloxypropyltrimethoxysilane modified alumina (D50: 1 μm, D100: 15 μm), 150 parts 3-methacryloxypropyltrimethoxysilane modified zinc oxide (D50: 0.5 μm, D100: 10 μm), 2 parts TBPO, 0.5 parts p-hydroxyanisole, 4 parts KM2110 and 3 parts antioxidant 168 were mixed at room temperature for 30 min, and then degassed and stirred under vacuum of -0.09 MPa for 8 min to obtain a wear-resistant and thermally conductive coating.

[0058] Example 4

[0059] By mass, 77 parts of octadecyl acrylate, 23 parts of pentaerythritol triacrylate, 200 parts of 3-methacryloyloxypropyltrimethoxysilane-modified boron nitride (D50: 3μm, D100: 13μm), 3 parts of TAPB, 2 parts of 2,6-di-tert-butyl-4-methylphenol, 6 parts of β-CEA and 2 parts of antioxidant 1010 were mixed at room temperature for 25 min, and then degassed and stirred under vacuum of -0.09 MPa for 6 min to obtain a wear-resistant and thermally conductive coating.

[0060] Comparative Example 1

[0061] By weight, 100 parts lauryl acrylate, 300 parts 3-methacryloxypropyltrimethoxysilane modified alumina (D50: 1 μm, D100: 15 μm), 150 parts 3-methacryloxypropyltrimethoxysilane modified zinc oxide (D50: 0.5 μm, D100: 10 μm), 2 parts TBPO, 0.5 parts p-hydroxyanisole, 4 parts KM2110 and 3 parts antioxidant 168 were mixed at room temperature for 30 min, and then degassed and stirred under vacuum of -0.09 MPa for 8 min to obtain a wear-resistant and thermally conductive coating.

[0062] Comparative Example 2

[0063] By weight, 100 parts pentaerythritol triacrylate, 300 parts 3-methacryloxypropyltrimethoxysilane modified alumina (D50: 1 μm, D100: 15 μm), 150 parts 3-methacryloxypropyltrimethoxysilane modified zinc oxide (D50: 0.5 μm, D100: 10 μm), 2 parts TBPO, 0.5 parts p-hydroxyanisole, 4 parts KM2110 and 3 parts antioxidant 168 were mixed at room temperature for 30 min, and then degassed and stirred under vacuum of -0.09 MPa for 8 min to obtain a wear-resistant and thermally conductive coating.

[0064] Comparative Example 3

[0065] By weight, 87 parts lauryl acrylate, 13 parts pentaerythritol triacrylate, 300 parts unmodified alumina (D50: 1μm, D100: 15μm), 150 parts unmodified zinc oxide (D50: 0.5μm, D100: 10μm), 2 parts TBPO, 0.5 parts p-hydroxyanisole, 4 parts KM2110 and 3 parts antioxidant 168 were mixed at room temperature for 30 min, and then degassed and stirred under vacuum of -0.09 MPa for 8 min to obtain a wear-resistant and thermally conductive coating.

[0066] The wear-resistant and thermally conductive coatings prepared in Examples 1-4 and Comparative Examples 1-3 were applied to copper sheets using a wet film applicator, with a coating thickness of 50 μm. A PET film was then applied to the coating surface and cured at 95-130℃ for 10 min (the curing temperature was set according to the optimal decomposition temperature of the initiator used). The PET film was then removed to obtain test samples, and performance tests were conducted. The results are shown in Table 1.

[0067] Table 1 Performance test results of Examples 1-4 and Comparative Examples 1-3

[0068]

[0069]

[0070] The performance testing methods are as follows:

[0071] Viscosity: Tested using a Brookfield viscometer;

[0072] Thermal resistance and BLT: Tested according to ASTM 5470 standard, test pressure 50 psi;

[0073] Abrasion test: Fix the test sample on the linear abrasion tester, use the CS-10 rubber friction head, load 500g, rub continuously, count the number of wear-throughs, and check whether the coating is worn through every 50 cycles;

[0074] Cross-cut adhesion test: Tested according to ISO 2409 standard, from 1B to 5B, representing increasingly stronger adhesion between the coating and the substrate.

[0075] As can be seen from the data in Table 1, the wear-resistant and thermally conductive coating of this application has good wear resistance, strong adhesion to the substrate, and low thermal resistance, which satisfies both the thermal conductivity requirement and the requirement of resistance to repeated insertion and removal friction.

[0076] The above embodiments are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to each other.

[0077] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are interpreted to include both the preferred embodiments and all changes and modifications falling within the scope of the embodiments of this application.

[0078] Finally, it should be noted that in this specification, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes said element.

[0079] The foregoing has provided a detailed description of the wear-resistant and thermally conductive coating and its preparation method. Specific embodiments have been used to illustrate the principles and implementation methods of this application. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A wear-resistant and thermally conductive coating, characterized in that, It is made from the following components in parts by weight: 100 parts acrylate monomer, 200-400 parts modified thermally conductive powder, 1-3 parts initiator, 0.5-2 parts polymerization inhibitor, 3-6 parts adhesion promoter, and 2-5 parts antioxidant; wherein the acrylate monomer is a monofunctional monomer or a polyfunctional monomer, and the mass ratio of the monofunctional monomer to the polyfunctional monomer is 1:0.05-0.3; The monofunctional monomer is at least one of lauryl acrylate and octadecyl acrylate; the polyfunctional monomer is at least one of trimethylolpropane triacrylate, pentaerythritol triacrylate, and pentaerythritol tetraacrylate. The modified thermally conductive powder is obtained by surface treatment of thermally conductive powder with methacryloxysilane; The thermally conductive powder is at least one of aluminum oxide, aluminum hydroxide, zinc oxide, aluminum nitride, and boron nitride; the particle size of the thermally conductive powder is less than 20 μm.

2. The wear-resistant and thermally conductive coating according to claim 1, characterized in that, The methacryloyloxysilane includes at least one of 3-methacryloyloxypropyltrimethoxysilane, 3-methacryloyloxypropyltriethoxysilane, 3-methacryloyloxypropylmethyldimethoxysilane, 3-methacryloyloxypropylmethyldiethoxysilane, and 3-methacryloyloxypropyltriisopropoxysilane.

3. The wear-resistant and thermally conductive coating according to claim 1, characterized in that, The initiator includes at least one of benzoyl peroxide, tert-butyl peroxide, 1,1-bis(tert-pentadienyl peroxide)cyclohexane, and tert-pentyl peroxide.

4. The wear-resistant and thermally conductive coating according to claim 1, characterized in that, The polymerization inhibitor includes at least one of p-hydroxyanisole, hydroquinone, 2,6-di-tert-butyl-4-methylphenol, 2-tert-butylhydroquinone, and 2,5-di-tert-butylhydroquinone.

5. The wear-resistant and thermally conductive coating according to claim 1, characterized in that, The adhesion promoter includes at least one of alkyl acrylate phosphate, hydroxyethyl methacrylate phosphate, and β-acryloyloxypropionic acid.

6. The wear-resistant and thermally conductive coating according to claim 1, characterized in that, The antioxidant includes at least one of tris(2,4-di-tert-butylphenyl) phosphite, antioxidant 1010, 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane and 4,4'-methylenebis(2,6-di-tert-butylphenol).

7. A method for preparing a wear-resistant and thermally conductive coating as described in any one of claims 1-6, characterized in that, include: The acrylate monomer, modified thermally conductive powder, initiator, polymerization inhibitor, adhesion promoter and antioxidant are mixed according to the formula to obtain a premixed wear-resistant thermally conductive coating. The premixed wear-resistant and thermally conductive coating is subjected to vacuum degassing treatment to obtain the wear-resistant and thermally conductive coating.

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