Wear-resistant heat-conducting coating and preparation method thereof

Abstract

The invention provides a wear-resistant heat-conducting coating and a preparation method thereof. The wear-resistant heat-conducting coating comprises the following components in parts by mass: 100 parts of an acrylate monomer, 200-400 parts of modified heat-conducting powder, 1-3 parts of an initiator, 0.5-2 parts of a polymerization inhibitor, 3-6 parts of an adhesion promoter and 2-5 parts of an antioxidant, wherein the acrylate monomer comprises a monofunctional monomer and a polyfunctional monomer, and the mass ratio of the monofunctional monomer to the polyfunctional monomer is 1: (0.05-0.3). The monofunctional acrylate monomer and the polyfunctional acrylate monomer are compounded, the mass ratio is controlled to be 1: (0.05-0.3), the monofunctional monomer provides flexibility, and the polyfunctional monomer improves the crosslinking degree, so that the heat-conducting coating has toughness, wear resistance and scratch resistance after being cured. And by adding the adhesion promoter, the adhesion of the coating and the radiator base material is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of thermal interface materials, and in particular to a wear-resistant thermally conductive coating and a preparation method thereof. Background Art

[0002] With the rapid development of optical communication technology, optical modules have occupied an important position with their high-speed transmission capabilities. The lasers, modulators, photodetectors, digital signal processors and other components that are finely integrated inside the optical module will inevitably generate a lot of heat energy during high-speed operation. If the heat cannot be dissipated in a timely and effective manner, the module temperature may be too high, affecting the quality of the optical signal and even directly affecting the performance and life of the entire system.

[0003] Currently, there are two common ways to deal with heat dissipation challenges in the industry: one is to improve the flatness of the contact surface between the heat sink and the optical module through ultra-precision machining, reduce the air thermal resistance between the interfaces and thus reduce the overall thermal resistance. However, this type of method has high requirements on the process accuracy of the device, resulting in a surge in production costs. The second is to use thermal conductive interface materials to fill the microscopic uneven areas on the contact surface between the heat sink and the optical module. However, the existing thermal conductive interface materials are prone to interface peeling or wear failure under frequent plugging and unplugging conditions. Summary of the invention

[0004] In view of the above-mentioned problems, the present application is proposed to provide a wear-resistant thermal conductive coating and a preparation method thereof that overcomes the problems or at least partially solves the problems, including:

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

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

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

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

[0009] Preferably, the methacryloxysilane includes at least one of 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane and 3-methacryloxypropyltriisopropoxysilane.

[0010] Preferably, the initiator comprises at least one of benzoyl peroxide, tert-butyl peroxy-2-ethylhexyl ester, 1,1-bis(tert-amylperoxy)cyclohexane and tert-amyl peroxybenzoate.

[0011] Preferably, 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.

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

[0013] Preferably, the antioxidant includes 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 the wear-resistant thermal conductive coating as described in any one of the above items, comprising:

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

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

[0017] This application has the following advantages:

[0018] In view of the problem that existing thermal interface materials are prone to interface peeling or wear failure under frequent plugging and unplugging conditions, the present application provides a solution for improving the wear resistance of thermal interface materials by compounding monofunctional monomers and multifunctional monomers. Specifically, a wear-resistant thermal conductive coating comprises, by mass, 100 parts of acrylate monomer, 200-400 parts of modified thermal conductive powder, 1-3 parts of initiator, 0.5-2 parts of inhibitor, 3-6 parts of adhesion promoter and 2-5 parts of antioxidant; wherein the acrylate monomer comprises a monofunctional monomer and a multifunctional monomer, and the mass ratio of the monofunctional monomer to the multifunctional monomer is 1:0.05-0.3.

[0019] By compounding monofunctional acrylate monomers and multifunctional acrylate monomers and controlling the mass ratio to be 1:0.05-0.3, the monofunctional monomer provides flexibility and the multifunctional monomer improves the degree of cross-linking, so that the thermal conductive coating has both toughness and wear resistance and scratch resistance after curing. If the proportion of monofunctional monomers is too high, the wear resistance of the coating will deteriorate. If the proportion of multifunctional monomers is too high, the toughness of the coating will deteriorate and the adhesion to the substrate will be reduced. By adding an adhesion promoter, the adhesion between the coating and the radiator substrate is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only part of the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a flow chart of the steps of the first part of the method for preparing the wear-resistant thermal conductive coating provided in one embodiment of the present application;

[0022] Figure 2 This is a flow chart of the steps of the second part of the method for preparing the wear-resistant thermally conductive coating provided in one embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0024] The inventors have found through analysis of the prior art that most of the thermal interface materials currently used for optical modules achieve heat dissipation through composite materials. For example, patent CN109866477A discloses a composite thermal interface material suitable for plugging and unplugging scenarios between optical modules and shell heat sinks, which is composed of a thermal conductive layer, an adhesive layer and a wear-resistant layer, wherein the wear-resistant layer provides scratch resistance, the adhesive layer is used to bond the heat sink, and the thermal conductive layer provides thermal conductivity. Another example is patent CN108184316A, which provides a friction-resistant high thermal conductivity sheet, including a thermal conductive layer and a wear-resistant layer, wherein the wear-resistant layer improves the wear resistance, and the thermal conductive layer under the protection of the wear-resistant layer is used to improve the interface thermal resistance. These thermally conductive composite materials require several materials to be bonded together, the preparation method is complicated, and the tightness of the bonding between each layer of material will affect the overall thermal resistance.

[0025] In addition, there are also solutions to improve wear resistance by optimizing components, such as the wear-resistant non-silicon thermal conductive composition disclosed in patent CN115926755A, which is composed of thermal conductive powder, wear-resistant powder, resin, acrylate monomer, plasticizer and antioxidant, and the friction resistance of the thermal conductive material is achieved by adding wear-resistant powder. However, the thermal conductivity of the wear-resistant powder is poor, which indirectly reduces the filling amount of the thermal conductive powder and cannot improve the bonding performance between the thermal conductive composition and the heat sink.

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

[0027] By compounding monofunctional acrylate monomers and multifunctional acrylate monomers and controlling the mass ratio to be 1:0.05-0.3, the monofunctional monomer provides flexibility and the multifunctional monomer improves the degree of cross-linking, so that the thermal conductive coating has both toughness and wear resistance and scratch resistance after curing. If the proportion of monofunctional monomers is too high, the wear resistance of the coating will deteriorate. If the proportion of multifunctional monomers is too high, the toughness of the coating will deteriorate and the adhesion to the substrate will be reduced. By adding an adhesion promoter, the adhesion between the coating and the radiator substrate is further improved.

[0028] Next, the wear-resistant thermally conductive coating provided by this exemplary embodiment will be further described.

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

[0030] In one embodiment of the present application, the modified thermally conductive powder is obtained by surface treating the thermally conductive powder with methacryloxysilane. The surface treatment of the thermally conductive powder with methacryloxysilane increases the wettability of the thermally conductive powder and the acrylate monomer, which is beneficial to the dispersion of the powder and reduces the thermal resistance of the coating. At the same time, methacryloxysilane can participate in the cross-linking of the acrylate monomer, thereby connecting the thermally conductive powder and the acrylate monomer together through chemical bonds, further improving the wear resistance of the coating and improving the adhesion between the coating and the radiator substrate.

[0031] In one embodiment of the present application, the thermally conductive powder includes at least one of aluminum oxide, aluminum hydroxide, zinc oxide, aluminum nitride and boron nitride; and 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, minimum interface thickness) of the thermally conductive coating can be reduced, thereby achieving lower thermal resistance.

[0032] In one embodiment of the present 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 the present application, the initiator includes at least one of benzoyl peroxide (BPO), tert-butyl peroxy-2-ethylhexyl ester (TBPO), 1,1-bis(tert-amylperoxy)cyclohexane and tert-amyl peroxybenzoate (TAPB). The initiator can achieve thermal crosslinking of the acrylate monomer.

[0034] In one embodiment of the present application, 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. The polymerization inhibitor can inhibit the polymerization of acrylate monomers at room temperature, but inhibits failure at high temperature, so that the coating has room temperature storage stability.

[0035] In one embodiment of the present application, the adhesion promoter includes at least one of alkyl acrylate phosphate (KM2130), hydroxyethyl methacrylate phosphate (KM2110), and β-acryloxy propionic 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 the present 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 the manufacturing process or use process, thereby increasing the service life of the product.

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

[0038] S110, mixing acrylate monomer, modified thermally conductive powder, initiator, polymerization inhibitor, adhesion promoter and antioxidant according to a proportion to obtain a premixed wear-resistant thermally conductive coating;

[0039] S120, performing vacuum degassing treatment on the premixed wear-resistant thermally conductive coating to obtain the wear-resistant thermally conductive coating.

[0040] Next, the preparation method of the wear-resistant thermally conductive coating provided by this exemplary embodiment will be further described.

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

[0042] The acrylate monomer, modified thermal conductive powder, initiator, polymerization inhibitor, adhesion promoter and antioxidant are stirred and mixed at room temperature according to the proportion for 20 to 30 minutes to obtain a premixed wear-resistant thermal conductive coating.

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

[0044] The premixed thermal conductive silicone grease is subjected to a vacuum degassing treatment, the degassing time is 5 to 10 minutes, and the vacuum degree is -0.1 to -0.08 MPa, so as to obtain a wear-resistant thermal conductive coating.

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

[0046] S010, adding thermally conductive powder and methacryloxysilane to an organic solvent, dropping an organic amine catalyst, stirring at room temperature for 5 to 15 minutes, and then heating to 60 to 80° C. and stirring for 25 to 35 minutes to allow the thermally conductive powder and the methacryloxysilane to fully react;

[0047] S020, removing the organic solvent and the organic amine catalyst by vacuuming to obtain a modified thermally conductive powder.

[0048] As described in step S010, 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, and then heated to 60 to 80° C. and stirred for 25 to 35 minutes to allow the thermally conductive powder and the methacryloxysilane to fully react.

[0049] Add thermally conductive powder and methacryloxysilane to an organic solvent, drop an organic amine catalyst, stir at room temperature for 5 to 15 minutes using a planetary mixer, and then heat to 60 to 80° C. and stir for 25 to 35 minutes to allow the thermally conductive powder and the methacryloxysilane to fully react; wherein 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, and the organic amine catalyst is used to accelerate the modification reaction of 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 vacuum to obtain a modified thermally conductive powder.

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

[0052] Example 1

[0053] Calculated by mass, 90 parts of lauryl acrylate, 10 parts of trimethylolpropane triacrylate, 100 parts of 3-methacryloxypropyltriethoxysilane-modified aluminum oxide (D50: 1 μm, D100: 15 μm), 150 parts of 3-methacryloxypropyltriethoxysilane-modified aluminum hydroxide (D50: 2.5 μm, D100: 15 μm), 1 part of TBPO, 1 part of hydroquinone, 3 parts of KM2130 and 4 parts of antioxidant 702 were mixed at room temperature for 20 minutes, and then degassed and stirred at a vacuum degree of -0.08 MPa for 10 minutes to obtain a wear-resistant thermal conductive coating.

[0054] Example 2

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

[0056] Example 3

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

[0058] Example 4

[0059] Calculated by mass, 77 parts of octadecyl acrylate, 23 parts of pentaerythritol triacrylate, 200 parts of 3-methacryloxypropyltrimethoxysilane-modified boron nitride (D50: 3 μm, D100: 13 μm), 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 minutes, and then degassed and stirred at a vacuum degree of -0.09 MPa for 6 minutes to obtain a wear-resistant thermal conductive coating.

[0060] Comparative Example 1

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

[0062] Comparative Example 2

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

[0064] Comparative Example 3

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

[0066] The wear-resistant thermal conductive coatings prepared in Examples 1 to 4 and Comparative Examples 1 to 3 were coated on a copper sheet using a wet film applicator, with a coating thickness of 50 μm. A PET film was then covered on the coating surface, and the coating was cured at 95-130° C. for 10 min (the curing temperature was set according to the optimal decomposition temperature of the initiator used). The PET film was torn off to obtain a test sample, which was then subjected to a performance test. The results are shown in Table 1.

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

[0068]

[0069]

[0070] Among them, the performance test methods are as follows:

[0071] Viscosity: tested using a Brookfield viscometer;

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

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

[0074] Hundred-grid test: Tested according to ISO 2409 standard, from 1B to 5B, the adhesion between the coating and the substrate is getting stronger and stronger.

[0075] It can be seen from the data in Table 1 that the wear-resistant thermal conductive coating of the present application has good wear resistance, strong adhesion to the substrate, and low thermal resistance, which not only meets the needs of thermal conductivity, but also meets the requirements of resistance to multiple plug-in and pull-out friction.

[0076] The above embodiments are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to in detail.

[0077] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the interpretation of the attached claims includes the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0078] Finally, it should be noted that in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or terminal device including the elements.

[0079] The above is a detailed introduction to a wear-resistant thermal conductive coating and a preparation method thereof provided by the present application. The present specification uses specific embodiments to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A wear-resistant thermal conductive coating, characterized in that: The composition comprises, by mass, 100 parts of acrylate monomer, 200-400 parts of modified thermal conductive powder, 1-3 parts of initiator, 0.5-2 parts of inhibitor, 3-6 parts of adhesion promoter and 2-5 parts of antioxidant; wherein the acrylate monomer comprises a monofunctional monomer and a multifunctional monomer, and the mass ratio of the monofunctional monomer to the multifunctional monomer is 1:0.05-0.

3.

2. The wear-resistant thermal conductive coating according to claim 1, characterized in that: The monofunctional monomer includes at least one of lauryl acrylate and octadecyl acrylate; and the multifunctional monomer includes at least one of trimethylolpropane triacrylate, pentaerythritol triacrylate and pentaerythritol tetraacrylate.

3. The wear-resistant thermal conductive coating according to claim 1, characterized in that: The modified thermally conductive powder is obtained by subjecting the thermally conductive powder to surface treatment with methacryloxysilane.

4. The wear-resistant thermal conductive coating according to claim 3, characterized in that: The thermally conductive powder includes at least one of aluminum oxide, aluminum hydroxide, zinc oxide, aluminum nitride and boron nitride; and the particle size of the thermally conductive powder is less than 20 μm.

5. The wear-resistant thermal conductive coating according to claim 3, characterized in that: The methacryloxysilane includes at least one of 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane and 3-methacryloxypropyltriisopropoxysilane.

6. The wear-resistant thermal conductive coating according to claim 1, characterized in that: The initiator includes at least one of benzoyl peroxide, tert-butyl peroxy-2-ethylhexyl ester, 1,1-bis(tert-amylperoxy)cyclohexane and tert-amyl peroxybenzoate.

7. The wear-resistant thermal 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.

8. The wear-resistant thermal 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-acryloxy propionic acid.

9. The wear-resistant thermal conductive coating according to claim 1, characterized in that: The antioxidant includes 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).

10. A method for preparing the wear-resistant thermal conductive coating according to any one of claims 1 to 9, characterized in that: include: The acrylate monomer, the modified thermally conductive powder, the initiator, the polymerization inhibitor, the adhesion promoter and the antioxidant are stirred and mixed according to the proportion to obtain a premixed wear-resistant thermally conductive coating; The premixed wear-resistant thermal conductive coating is subjected to vacuum degassing treatment to obtain the wear-resistant thermal conductive coating.

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