Wear-resistant hydrophobic anticorrosive paint as well as preparation method and application thereof

Abstract

The invention provides a wear-resistant hydrophobic anticorrosive paint, and a preparation method and application thereof. The invention also provides a wear-resistant hydrophobic anticorrosive coating prepared from the wear-resistant hydrophobic anticorrosive paint. The wear-resistant hydrophobic anticorrosive paint provided by the invention can realize hydrophobic modification on the surface of an obtained coating, can ensure the wear resistance of the coating, can further improve the corrosion resistance, and is simple and convenient in preparation process, high in operability, wide in raw material source, low in cost, safe and environment-friendly.

Description

Technical Field

[0001] The present invention relates to the field of functional coatings, in particular to a wear-resistant, hydrophobic, and anti-corrosion coating, a preparation method thereof, and an application thereof, and also to a wear-resistant, hydrophobic, and anti-corrosion coating. Background Art

[0002] Organic coatings are one of the important means to solve the protection and corrosion problems of concrete and steel structures. They are characterized by easy operation, low cost, and strong adaptability. Wear-resistant and hydrophobic anti-corrosion coatings are a type of functional organic coating that has a huge demand in the industrial field. For example, in the field of coal freight, the use of wear-resistant and hydrophobic anti-corrosion coatings can not only reduce the freezing of coal on the truck wall panels at low temperatures, but also improve the wear resistance and corrosion resistance of the metal inner wall of the truck. For example, in the flue of a power plant, the use of wear-resistant and hydrophobic anti-corrosion coatings can reduce the adhesion of soot in the flue, improve the self-cleaning ability, reduce cleaning operations, and reduce the wear of the flue wall caused by airflow and particles in the flue, thereby improving the anti-corrosion effect of the flue.

[0003] Extensive research has been conducted on wear-resistant, hydrophobic, and anti-corrosion coatings. For example, Chinese patent CN 110467830B discloses a wear-resistant, hydrophobic coating and a method for preparing the same. The wear-resistant, hydrophobic coating comprises a bottom layer and an upper layer, wherein the bottom layer comprises first nano-silica particles rich in epoxy groups on the surface, and the upper layer comprises second nano-silica particles rich in amino and alkyl groups on the surface. The second nano-silica particles form a micro-nano concave-convex structure in the upper layer. The wear-resistant, hydrophobic coating exhibits excellent adhesion to glass, metal, and plastic surfaces, and exhibits wear resistance and super-hydrophobic properties. Chinese patent application CN 116970312A discloses a composite wear-resistant super-hydrophobic coating, which is composed of a surface layer material and a bottom layer material, the bottom layer material includes a mixture of fluorocarbon resin and epoxy resin, the surface layer material includes hydrophobically modified ceramic microbeads, and the hydrophobically modified nanocellulose coated on the surface of the hydrophobically modified ceramic microbeads and the hydrophobically modified nanocellulose filled in the inside of the hydrophobically modified ceramic microbeads, the composite wear-resistant super-hydrophobic coating has good super-hydrophobicity, strong adhesion, high hardness, and strong scrubbing resistance. However, the above-mentioned coating is all achieved by the coating form of the composite coating to achieve the dual-function effect of wear-resistant and hydrophobic, and the process is relatively complicated.

[0004] Chinese patent application CN 113637401A discloses a kind of preparation method and application of two-component wear-resistant super-hydrophobic coating, with conventional traditional resin (such as epoxy resin) as resin backbone, with functionalized metal organic framework (MOF) material as nano particle (coarse structure in coating is provided), with functionalized silicone oil as low surface energy material, and adopt isocyanate substance as the cross-linking curing agent of above-mentioned components, prepare the wear-resistant super-hydrophobic coating through room temperature rapid solidification, this coating can be simply coated on various substrates such as metal, fabric, glass, wood, make it realize super-hydrophobic, all have coarse structure from top to bottom after coating solidification, wear rear surface still can expose new surface that can realize super-hydrophobic effect, excellent wear resistance.But this patent application uses price expensive and prepares complicated MOF material as hydrophobic material, isocyanate as curing agent, coating preparation is difficult to realize, and raw material toxicity is large, and wear resistance is insufficient.

[0005] It can be seen that there is an urgent need to develop a wear-resistant, hydrophobic, anti-corrosion coating that is low-cost, safe, environmentally friendly, and has excellent performance to meet the needs of various industries, especially the coal, electricity and other industries. Summary of the Invention

[0006] In order to make up for the deficiencies in the prior art, one purpose of the present invention is to provide a wear-resistant, hydrophobic, and anti-corrosion coating that can form an organic coating with good wear resistance, hydrophobicity, and anti-corrosion effects, thereby meeting the use requirements of wear-resistant and hydrophobic coatings in coal trucks, power plant flues, coal transport walkways, and other fields, and improving the service life of related facilities and equipment.

[0007] The first aspect of the present invention provides a wear-resistant, hydrophobic, and anti-corrosion coating, which includes components A and B. Component A includes, by weight, 20 to 60 parts of a mixed epoxy resin, 2 to 15 parts of a reactive diluent, 0.5 to 5 parts of an epoxy-terminated silicone oil, 20 to 65 parts of mixed silicon carbide, 0.1 to 1.2 parts of polytetrafluoroethylene-modified polyethylene powder, 5 to 20 parts of a first powder filler, and 0.1 to 1.2 parts of a functional additive. Component B includes 65 to 85 parts of an alicyclic amine curing agent, 10 to 25 parts of a second powder filler, and 1 to 6 parts of a silane coupling agent; wherein the mixed silicon carbide is selected from a mixture of 100 to 200 mesh silicon carbide and 300 to 400 mesh silicon carbide in a weight ratio of 1:0.8 to 5.

[0008] The wear-resistant and hydrophobic anti-corrosion coating provided by the present invention has the following characteristics: (1) by compounding wear-resistant materials of different particle sizes, that is, mixing silicon carbide, the density of resin filling can be improved, the wear of the resin can be reduced, thereby improving the wear resistance of the coating body, and at the same time, a stronger microstructure can be formed on the surface of the coating, reducing the wear level; (2) the end-epoxy silicone oil and polytetrafluoroethylene modified polyethylene micropowder can act synergistically, the end-epoxy silicone oil can introduce low surface energy components, reduce the internal friction of the coating, and facilitate the polytetrafluoroethylene modified polyethylene micropowder to float on the surface of the coating to form a hydrophobic layer, reduce the surface energy of the coating, and further improve the wear resistance of the coating; (3) a low-viscosity curing film-forming system is adopted, and no solvent components need to be added, which has the advantages of environmental protection, high degree of cross-linking, and good anti-corrosion effect.

[0009] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the component A may further include, by weight: 30 to 50 parts of a mixed epoxy resin, 5 to 10 parts of a reactive diluent, 1 to 3 parts of an epoxy-terminated silicone oil, 30 to 55 parts of mixed silicon carbide, 0.2 to 1 part of polytetrafluoroethylene-modified polyethylene micropowder, 8 to 15 parts of a first powder filler, and 0.2 to 1 part of a functional additive.

[0010] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the component B may further include, by weight: 70 to 80 parts of an alicyclic amine curing agent, 15 to 20 parts of a second powder filler, and 2 to 5 parts of a silane coupling agent; wherein the mixed silicon carbide is selected from a mixture of 100 to 200 mesh silicon carbide and 300 to 400 mesh silicon carbide in a weight ratio of 1:1 to 3.

[0011] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the mixed silicon carbide is a combination of "coarse silicon carbide + fine silicon carbide." In some preferred embodiments, the mixed silicon carbide is selected from a mixture of 100-mesh silicon carbide and 400-mesh silicon carbide in a weight ratio of 1:1 to 3.

[0012] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the mixed epoxy resin is selected from a mixture of a multifunctional novolac epoxy resin and a low-viscosity epoxy resin in a weight ratio of 1:1 to 5 (for example, a weight ratio of 1:1 to 3). In some preferred embodiments, the mixed epoxy resin is selected from a mixture of a multifunctional novolac epoxy resin and a low-viscosity epoxy resin in a weight ratio of 1:1 to 2.

[0013] In some preferred embodiments, the epoxy equivalent of the multifunctional novolac epoxy resin may be 160 to 300, for example, 170 to 200. In some more preferred embodiments, the multifunctional novolac epoxy resin may be selected from at least one of novolac epoxy resin F44, novolac epoxy resin F48, and novolac epoxy resin F51.

[0014] In some preferred embodiments, the low-viscosity epoxy resin may have an epoxy equivalent of 160 to 180 and a viscosity of 2000 to 5000 mPa.s at 25° C. In some more preferred embodiments, the low-viscosity epoxy resin may be selected from bisphenol F epoxy resins, such as NPEF-170 epoxy resin (epoxy equivalent of 160 to 180; viscosity of approximately 3000 mPa.s at 25° C.).

[0015] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the epoxy-terminated silicone oil is a linear polydimethylsiloxane containing epoxy functional groups at both ends, and its structural formula is as follows:

[0016]

[0017] Depending on the value of n, the weight average molecular weight of the epoxy-terminated silicone oil can be 4000-8000, and the epoxy value can be 0.02-0.08 mol. In some preferred embodiments, the weight average molecular weight of the epoxy-terminated silicone oil can be 4000-5000, and the epoxy value can be 0.04-0.05 mol.

[0018] In the wear-resistant and hydrophobic anti-corrosion coating provided by the present invention, the particle size D50 of the polytetrafluoroethylene-modified polyethylene powder can be 3 to 6 μm, such as BYK996, BYK927, etc.

[0019] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the reactive diluent is selected from epoxy resins containing 1 to 2 epoxy groups in their molecular structure. In some preferred embodiments, the reactive diluent is a diepoxy reactive diluent having a viscosity of 10 to 100 mPa·s at 25°C, such as 1,4-butanediol diglycidyl ether and diluent NC-513.

[0020] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the first powder filler can be selected from sericite powder, calcium carbonate, or talc. In some preferred embodiments, the first powder filler can be selected from wet-process sericite powder, for example, with a particle size of 14 to 16 μm.

[0021] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the functional additive can be selected from common additives in the coating field, including but not limited to defoamers, leveling agents, wetting agents, dispersants, etc. In some preferred embodiments, the functional additive can be selected from dispersants, such as BYK066, BYK161, etc.

[0022] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the alicyclic amine curing agent can be selected from at least one of isophoronediamine (IPDI) and 4,4'-diaminodicyclohexylmethane (PACM).

[0023] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the second powder filler can be selected from sericite powder, calcium carbonate, or talc. In some preferred embodiments, the second powder filler can be selected from wet-process sericite powder, for example, with a particle size of 14 to 16 μm.

[0024] In the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the silane coupling agent can be selected from common types in the art, including but not limited to γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-methacryloyloxypropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, and the like.

[0025] A second aspect of the present invention provides a method for preparing a wear-resistant, hydrophobic, and anti-corrosion coating according to any one of the above technical solutions, wherein the method for preparing component A comprises:

[0026] S1: Mixing the epoxy resin mixture, the reactive diluent and the epoxy-terminated silicone oil at 60-80° C. (e.g., 70° C.);

[0027] S2: cooling the mixture obtained in step S1 to 20-40° C. (e.g., 30° C.), adding the functional additive, the first powder filler, and the mixed silicon carbide, and mixing them uniformly; and

[0028] S3: adding polytetrafluoroethylene-modified polyethylene powder to the mixture obtained in step S2 at 20-40° C. (e.g., 30° C.), and mixing to obtain component A;

[0029] The preparation method of component B comprises:

[0030] T1: Mix the alicyclic amine curing agent and the silane coupling agent at 20-40°C; and

[0031] T2: Add the second powder filler to the mixed material obtained in step T1, and mix well to obtain the component B.

[0032] In the preparation method of the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the mixing of materials can be promoted by stirring under vacuum. For example, a vacuum planetary stirring kettle can be used, and the stirring speed can be 1000 to 3000 rpm.

[0033] In the preparation method of the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention, the standard for uniform mixing can be that each component is evenly dispersed without bubbles or particle aggregation.

[0034] A third aspect of the present invention provides the use of the wear-resistant, hydrophobic, and anti-corrosion coating according to any one of the above technical solutions in the preparation of a wear-resistant, hydrophobic, and anti-corrosion coating. The wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention can produce an organic coating with good wear resistance, hydrophobicity, and anti-corrosion effects, and is therefore suitable for all applications with high demands for wear resistance, hydrophobicity, and anti-corrosion, such as coal trucks, power plant flues, and coal transport platforms.

[0035] The fourth aspect of the present invention provides a wear-resistant, hydrophobic, and anti-corrosion coating, which is obtained by mixing component A and component B of the wear-resistant, hydrophobic, and anti-corrosion coating described in any one of the above technical solutions in a weight ratio of 3 to 6:1 (for example, a weight ratio of 4 to 5:1), and curing after coating to obtain the wear-resistant, hydrophobic, and anti-corrosion coating.

[0036] The wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention can be cured at room temperature or under heating conditions. In some preferred embodiments, the curing temperature can be 20 to 80°C, for example, 20 to 40°C.

[0037] The wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention can be constructed by any common method in the art, such as airless spraying, scraping, etc., and can be applied to a required thickness.

[0038] The technical solution provided by the present invention has the following advantages:

[0039] (1) The wear-resistant and hydrophobic anti-corrosion coating provided by the present invention can achieve hydrophobic modification of the surface of the obtained coating through the combined action of wear-resistant materials of different particle sizes, end-epoxy silicone oil, polytetrafluoroethylene modified polyethylene micropowder and other ingredients, and can ensure the wear resistance of the coating, while the anti-corrosion performance can also be further improved.

[0040] (2) The organic coating obtained by the wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention has excellent comprehensive performance, which can meet the wear resistance requirements of various occasions such as coal freight trains, coal yards, and power plants, while also maintaining the coating's good hydrophobicity, thereby improving the self-cleaning and anti-corrosion effects.

[0041] (3) The wear-resistant, hydrophobic, and anti-corrosion coating provided by the present invention has a simple preparation process, strong operability, a wide range of raw material sources, low cost, safety, and environmental protection, and therefore has good industrial applicability and is suitable for large-scale application. DETAILED DESCRIPTION

[0042] The technical solution of the present invention is further described in detail below with reference to specific embodiments.

[0043] The sources of the raw materials or reagents used in the examples and comparative examples of the present invention are as follows:

[0044]

[0045]

[0046] Other raw materials or reagents were commercially available unless otherwise specified.

[0047] Unless otherwise specified, the percentages used in the examples and comparative examples of the present invention are all percentages by mass.

[0048] The preparation process of the wear-resistant hydrophobic anticorrosive coating of the embodiment and comparative example is as follows:

[0049] The preparation of component A comprises the following steps:

[0050] (1) Add the mixed epoxy resin, epoxy-terminated silicone oil, and reactive diluent into a vacuum planetary stirred tank and heat to 75°C. Stir at a speed of 1000 rpm under vacuum until all components are evenly dispersed and free of bubbles;

[0051] (2) After cooling to 30°C, add the dispersant first, then add the wet-process sericite powder, 100 mesh silicon carbide and 400 mesh silicon carbide, and disperse at a high speed of 1800 rpm under vacuum until all components are evenly dispersed and there are no particles;

[0052] (3) Add polytetrafluoroethylene modified polyethylene powder at 30°C and disperse at a high speed of 1500 rpm under vacuum until the components are evenly dispersed and free of particles, thereby obtaining component A.

[0053] The preparation of component B comprises the following steps:

[0054] (1) At room temperature (25±2°C), add the silane coupling agent and the alicyclic amine curing agent into a vacuum planetary stirring kettle and stir them thoroughly in the stirring kettle at a speed of 1000 rpm under vacuum until they are uniform and free of bubbles;

[0055] (2) Add wet-process sericite powder and disperse it at a high speed of 1800 rpm under vacuum until all components are evenly dispersed and there are no particles, thereby obtaining component B.

[0056] The ingredients and dosages (in parts by weight) of the wear-resistant, hydrophobic, and anti-corrosion coatings of the examples and comparative examples are shown in Table 1 and Table 2, respectively.

[0057] Table 1 Composition and dosage of the wear-resistant hydrophobic anticorrosive coating of the embodiment

[0058]

[0059] Table 2 Composition and dosage of the wear-resistant hydrophobic anticorrosive coating of the comparative example

[0060]

[0061] Component A and component B obtained in each embodiment and comparative example were mixed in a weight ratio of 4:1-5:1 (so that the epoxy group of the mixed epoxy resin and the active hydrogen of the alicyclic amine in each embodiment and comparative example were mixed in an equal molar ratio), and then coated on a sandblasted carbon steel plate. The mixture was cured at room temperature (25±2°C) for 168 hours to obtain a coating with a thickness of 150-200 μm. The coating was then subjected to performance testing. The test results are shown in Table 3.

[0062] Table 3 Coating performance test results

[0063]

[0064] In Table 3, the wear resistance test uses a table abrader with a CS17 abrasion wheel and a test condition of 1000g and 500r; the contact angle test is the contact angle to water; the acid resistance test is to apply the coating on a sandblasted carbon steel sheet and cure it to form a coating. After sealing the edge with an acid-resistant coating, the coating is immersed in a 30% sulfuric acid solution and placed at room temperature (25±2°C) for 30 days. The appearance of the coating is observed.

[0065] The comparison between Example 1 and Comparative Example 1 and Comparative Example 2 shows that the epoxy-terminated silicone oil and polytetrafluoroethylene modified polyethylene powder have an important influence on the wear resistance and hydrophobicity of the coating. The use of epoxy-terminated silicone oil or polytetrafluoroethylene modified polyethylene powder alone cannot achieve good wear resistance and hydrophobic effects. After the two are blended, the epoxy-terminated silicone oil is conducive to the floating of the modified polyethylene powder, thereby forming a hydrophobic layer on the coating surface, and is also conducive to improving the wear resistance.

[0066] The comparison between Example 1 and Comparative Example 3 shows that the usage ratio of coarse and fine silicon carbide also has a greater influence on the wear resistance of the coating. The reasonable compounding of coarse and fine silicon carbide particles is beneficial to the infiltration of the film-forming resin, thereby improving the density and surface firmness of the coating, and further improving the wear resistance of the coating.

[0067] The comparison between Example 1 and Comparative Example 4 shows that changing the type of curing agent will reduce the wear resistance and acid immersion resistance of the coating. The alicyclic amine curing agent used in the present invention has an extremely low viscosity, which is conducive to forming a strong coating and achieving the requirements of wear resistance and corrosion resistance.

[0068] It can be seen from the above embodiments and comparative examples that the wear-resistant, hydrophobic and anti-corrosion coating provided by the present invention can achieve excellent wear resistance, hydrophobicity and anti-corrosion performance of the coating obtained after curing through the synergistic effect of various components. Therefore, it can be suitable for applications with higher performance requirements and meet more application needs, and thus has very important economic value and social value.

[0069] Unless otherwise defined, the terms used in the present invention have the same meanings as those commonly understood by those skilled in the art.

[0070] The embodiments described in the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Those skilled in the art may make various other substitutions, changes and improvements within the scope of the present invention. Therefore, the present invention is not limited to the above-mentioned embodiments, but is only limited by the claims.

Claims

1. A wear-resistant, hydrophobic, anti-corrosion coating, characterized in that: The invention comprises component A and component B, wherein, by weight, component A comprises: 20 to 60 parts of a mixed epoxy resin, 2 to 15 parts of a reactive diluent, 0.5 to 5 parts of an epoxy-terminated silicone oil, 20 to 65 parts of mixed silicon carbide, 0.1 to 1.2 parts of polytetrafluoroethylene-modified polyethylene micropowder, 5 to 20 parts of a first powder filler, and 0.1 to 1.2 parts of a functional additive; and component B comprises: 65 to 85 parts of an alicyclic amine curing agent, 10 to 25 parts of a second powder filler, and 1 to 6 parts of a silane coupling agent; wherein the mixed silicon carbide is selected from a mixture of 100 to 200 mesh silicon carbide and 300 to 400 mesh silicon carbide in a weight ratio of 1:0.8 to 5.

2. The wear-resistant, hydrophobic, anti-corrosion coating according to claim 1, characterized in that: In parts by weight, the component A comprises: 30 to 50 parts of a mixed epoxy resin, 5 to 10 parts of a reactive diluent, 1 to 3 parts of an epoxy-terminated silicone oil, 30 to 55 parts of mixed silicon carbide, 0.2 to 1 part of polytetrafluoroethylene-modified polyethylene micropowder, 8 to 15 parts of a first powder filler, and 0.2 to 1 part of a functional additive; the component B comprises: 70 to 80 parts of an alicyclic amine curing agent, 15 to 20 parts of a second powder filler, and 2 to 5 parts of a silane coupling agent; wherein the mixed silicon carbide is selected from a mixture of 100 to 200 mesh silicon carbide and 300 to 400 mesh silicon carbide in a weight ratio of 1:1 to 3.

3. The wear-resistant, hydrophobic, anti-corrosion coating according to claim 1 or 2, characterized in that: The mixed epoxy resin is selected from a mixture of a multifunctional novolac epoxy resin and a low viscosity epoxy resin in a weight ratio of 1:1 to 5; Preferably, the epoxy equivalent of the multifunctional novolac epoxy resin is 160 to 300, and is preferably selected from at least one of novolac epoxy resin F44, novolac epoxy resin F48, and novolac epoxy resin F51; and / or The low-viscosity epoxy resin has an epoxy equivalent of 160 to 180 and a viscosity of 2000 to 5000 mPa.s at 25° C., and is preferably selected from bisphenol F epoxy resin.

4. The wear-resistant, hydrophobic, anti-corrosion coating according to any one of claims 1 to 3, characterized in that: The weight average molecular weight of the epoxy-terminated silicone oil is 4000-8000, and the epoxy value is 0.02-0.08 mol; Preferably, the weight average molecular weight of the epoxy-terminated silicone oil is 4000-5000, and the epoxy value is 0.04-0.05 mol.

5. The wear-resistant, hydrophobic, anti-corrosion coating according to any one of claims 1 to 4, characterized in that: The particle size D50 of the polytetrafluoroethylene modified polyethylene powder is 3 to 6 μm.

6. The wear-resistant, hydrophobic, anti-corrosion coating according to any one of claims 1 to 5, characterized in that: The reactive diluent is selected from epoxy resins containing 1 to 2 epoxy groups in their molecular structure, preferably selected from diepoxy reactive diluents having a viscosity of 10 to 100 mPa.s at 25°C; and / or The first powder filler is selected from sericite powder, calcium carbonate or talc, preferably selected from wet-process sericite powder; and / or The functional auxiliary agent is selected from at least one of a defoaming agent, a leveling agent, a wetting agent, and a dispersant, and is preferably selected from a dispersant.

7. The wear-resistant, hydrophobic, anti-corrosion coating according to any one of claims 1 to 6, characterized in that: The alicyclic amine curing agent is selected from at least one of isophorone diamine (IPDI) and 4,4'-diaminodicyclohexylmethane (PACM); and / or The second powder filler is selected from sericite powder, calcium carbonate or talc, preferably selected from wet-process sericite powder; and / or The silane coupling agent is selected from at least one of γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane, and γ-mercaptopropyltriethoxysilane.

8. The method for preparing the wear-resistant, hydrophobic, anti-corrosion coating according to any one of claims 1 to 7, characterized in that: The preparation method of component A comprises: S1: Mix the epoxy resin mixture, reactive diluent and epoxy-terminated silicone oil at 60-80°C; S2: cooling the mixture obtained in step S1 to 20-40° C., adding the functional additive, the first powder filler and the mixed silicon carbide and mixing them evenly; and S3: adding polytetrafluoroethylene-modified polyethylene powder to the mixture obtained in step S2 at 20-40° C. and mixing to obtain component A; The preparation method of component B comprises: T1: Mix the alicyclic amine curing agent and the silane coupling agent at 20-40°C; and T2: Add the second powder filler to the mixed material obtained in step T1, and mix well to obtain the component B.

9. Use of the wear-resistant, hydrophobic, anti-corrosion coating according to any one of claims 1 to 7 in the preparation of a wear-resistant, hydrophobic, anti-corrosion coating; Preferably, the wear-resistant, hydrophobic, and anti-corrosion coating is used for coal freight cars, power plant flues, or coal transport tracks.

10. A wear-resistant, hydrophobic, and anti-corrosion coating, characterized in that: Component A and component B of the wear-resistant, hydrophobic, and anti-corrosion coating according to any one of claims 1 to 7 are mixed in a weight ratio of 3 to 6:1, and then cured after coating to obtain the wear-resistant, hydrophobic, and anti-corrosion coating; Preferably, the curing temperature is 20-80°C.

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