A high-hardness wear-resistant coating and preparation method thereof

Abstract

The present invention relates to the technical field of wear-resistant coatings, and in particular to a high-hardness wear-resistant coating and a preparation method thereof, comprising the following raw materials in parts by weight: 40-45 parts of polyester-modified acrylic resin, 8-12 parts of modified silicon carbide powder, 4-7 parts of a re-adjusting functional agent, 2-5 parts of sodium carboxymethyl cellulose, 2-4 parts of m-phenylenediamine curing agent, 20-25 parts of toluene solvent, and 1-3 parts of stearic acid. The wear-resistant coating of the present invention adopts polyester-modified acrylic resin to match m-phenylenediamine curing agent, toluene solvent, stearic acid, sodium carboxymethyl cellulose, and simultaneously reconciles modified silicon carbide powder and a re-adjusting functional agent, and the two cooperate with each other to enhance the wear resistance, impact and adhesion coordination improvement of the product, and the weathering stability of the product has a remarkable effect.

Description

Technical Field

[0001] The present invention relates to the technical field of wear-resistant coatings, and particularly relates to a high-hardness wear-resistant coating and a preparation method thereof. Background Art

[0002] Wear-resistant coatings are a type of new functional coatings with special functions, having good wear resistance. The mechanical industry uses the wear-resistant functional coating technology to perform metal surface coating treatment on key mechanical components, which can improve the wear resistance, hardness and service life of mechanical equipment.

[0003] Existing coatings, in order to enhance the wear resistance of products, easily lead to poor adhesion and impact performance of products. It is very difficult to coordinately improve the wear resistance, impact and adhesion of products, and the weather resistance stability of products is poor, which limits the use efficiency of products. Summary of the Invention

[0004] Aiming at the defects of the existing technology, the purpose of the present invention is to provide a high-hardness wear-resistant coating and a preparation method thereof to solve the problems raised in the above background art.

[0005] The present invention adopts the following technical solutions to solve the technical problems:

[0006] The present invention provides a high-hardness wear-resistant coating, comprising the following raw materials in parts by weight;

[0007] 40 - 45 parts of polyester-modified acrylic resin, 8 - 12 parts of modified silicon carbide powder, 4 - 7 parts of supplementary adjustment functional agent, 2 - 5 parts of sodium carboxymethyl cellulose, 2 - 4 parts of m-phenylenediamine curing agent, 20 - 25 parts of toluene solvent, 1 - 3 parts of stearic acid;

[0008] The preparation method of the polyester-modified acrylic resin is as follows:

[0009] Put 320 g of hexanediol, 700 g of neopentyl glycol, 600 g of 1,4-cyclohexanedimethanol, 370 g of trimellitic anhydride, 100 g of hexahydrophthalic anhydride, 500 g of 1,4-cyclohexanedicarboxylic acid, 550 g of isophthalic acid, 130 g of maleic anhydride, and 8 g of ethylene glycol antimonate into a reaction kettle equipped with a stirrer, thermometer, rectification column, condenser and nitrogen inlet. The reaction temperature is 250 °C, the pressure is 0.12 MPa, stir for 6 hours, adjust the pressure to -0.095 MPa, the reaction temperature is 200 °C, stir for 3 hours, and take samples to measure the acid value and viscosity. React until the acid value is 25 mgKOH / g, cool down to 120 °C, add 1780 g of ethylene glycol monobutyl ether to adjust the solid content to 60 ± 2%, and measure the viscosity at 25 °C with a rotary viscometer to be 1500 - 3500 mPa·s, the unsaturation (expressed by iodine value, based on non-volatile matter) is 9.2, and the glass transition temperature is 5 °C, then discharge to obtain unsaturated polyester;

[0010] 150g of the unsaturated polyester synthesized above, 320g of propylene glycol monobutyl ether, and 340g of ethylene glycol monobutyl ether are put into a reactor, and the reaction temperature is 135-140°C; 15g of tert-butyl peroxybenzoate and 10g of tert-butyl peroxy 2-ethylhexanoate, 80g of methyl methacrylate, 120g of cyclohexyl methacrylate, 150g of isooctyl acrylate, 50g of ethyl acrylate, 350g of hydroxyethyl acrylate, and 70g of itaconic acid are mixed evenly in a high-level tank and added dropwise to the reactor for 3 hours. The temperature is controlled at 135-140°C during the addition. After the monomer and initiator are dripped, the temperature is kept at 135-140°C for 2 hours, and the temperature is cooled to below 50°C. After adding 721g of deionized water and 109g of triethylamine and stirring for 30 minutes, the polyester-modified water-based acrylic resin is obtained by filtration;

[0011] The preparation method of modified silicon carbide powder is:

[0012] S01: Immerse silicon carbide powder in a sufficient amount of silane coupling liquid for ultrasonic treatment, and after the ultrasonic treatment is completed, obtain silicon carbide coupling and silane coupling liquid;

[0013] S02: Add 2-5 parts by weight of magnesium aluminum spinel and 1-3 parts by weight of magnesium oxide to 6-8 parts by weight of sodium citrate solution, then add 1-2 parts by weight of sodium dodecylbenzene sulfonate, stir thoroughly, then wash with water and dry to obtain an additive;

[0014] S03: Mix the additive, silicon carbide and silane coupling liquid in a weight ratio of 5:3 and perform ball milling. After the ball milling is completed, modified silicon carbide powder is obtained.

[0015] Preferably, the high hardness wear-resistant coating comprises the following raw materials in parts by weight:

[0016] 42.5 parts of polyester modified acrylic resin, 10 parts of modified silicon carbide powder, 5.5 parts of adjusting functional agent, 3.5 parts of sodium carboxymethyl cellulose, 3 parts of m-phenylenediamine curing agent, 22.5 parts of toluene solvent, 2 parts of stearic acid.

[0017] Preferably, the ultrasonic power of the ultrasonic treatment is 350-400W, and the ultrasonic time is 20-30min; the ball milling speed of the mixing ball milling treatment is 750-850r / min, and the ball milling is 2h.

[0018] Preferably, the mass fraction of the sodium citrate solution is 3-6%.

[0019] Preferably, the silane coupling liquid is prepared by mixing silane coupling agent KH560 and chitosan solution in a weight ratio of 2:5.

[0020] Preferably, the mass fraction of the chitosan solution is 2-5%. ​

[0021] Preferably, the preparation method of the supplementary adjustment functional agent is as follows:

[0022] S11: Irradiate nano-aluminum oxide in a proton irradiation chamber for 5 - 10 minutes with an irradiation power of 350 - 400 W. After the irradiation ends, obtain the irradiated nano-aluminum oxide;

[0023] S12: Add 2 - 4 parts by weight of glass fiber and 1 - 3 parts by weight of nano-silica sol into 3 - 6 parts by weight of lanthanum chloride solution, then add 2 - 3 parts by weight of zinc oxide, and stir thoroughly to obtain an adjustment liquid;

[0024] Stir and process the irradiated nano-aluminum oxide and the adjustment liquid according to a weight ratio of 2:5. After the stirring ends, wash with water, filter by suction, and dry to obtain the supplementary adjustment functional agent.

[0025] Preferably, the mass fraction of the lanthanum chloride solution is 3 - 5%; the stirring speed of the stirring treatment is 750 - 850 r / min, and stir for 20 - 30 minutes.

[0026] The present invention also provides a preparation method of a high-hardness wear-resistant coating, including the following steps: Weigh the raw materials according to parts by weight, and mix the raw materials thoroughly to obtain the high-hardness wear-resistant coating.

[0027] Preferably, the hot pressing treatment pressure is 5 MPa.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The wear-resistant coating of the present invention uses polyester-modified acrylic resin in combination with m-phenylenediamine curing agent, toluene solvent, stearic acid, and sodium carboxymethylcellulose. At the same time, it is blended with modified silicon carbide powder and supplementary adjustment functional agent. The two cooperate with each other to enhance the wear resistance of the product, and the impact and adhesion are coordinately improved. In addition, the weather resistance stability effect of the product is remarkable. The modified silicon carbide powder is ultrasonically treated by immersing the silicon carbide powder into a sufficient amount of silane coupling liquid. The silane coupling liquid is prepared by stirring the silane coupling agent KH560 and chitosan solution according to a weight ratio of 2:5, which is convenient for the silicon carbide powder to better coordinate with the additives. The additives are blended and adjusted by magnesium aluminate spinel, magnesium oxide, sodium citrate solution, and sodium dodecylbenzenesulfonate. Through the cooperation of the raw materials, the coordination of the system performance is enhanced. In addition, the supplementary adjustment functional agent uses nano-aluminum oxide as the matrix raw material, and is irradiated in a proton irradiation chamber to stimulate the active efficiency of the raw materials. The glass fiber, nano-silica sol, lanthanum chloride solution, and zinc oxide are stirred thoroughly to obtain an adjustment liquid. Through the cooperation of the raw materials in the adjustment liquid, the nano-aluminum oxide is further coordinated, so that the synergistic effect between the obtained supplementary adjustment functional agent and the modified silicon carbide powder is enhanced, and the performance of the product is further improved. Detailed implementation mode

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in combination with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] A high-hardness wear-resistant coating of this embodiment includes the following raw materials in parts by weight;

[0032] 40-45 parts of polyester modified acrylic resin, 8-12 parts of modified silicon carbide powder, 4-7 parts of replenishing functional agent, 2-5 parts of sodium carboxymethyl cellulose, 2-4 parts of m-phenylenediamine curing agent, 20-25 parts of toluene solvent, 1-3 parts of stearic acid.

[0033] The high hardness wear-resistant coating of this embodiment includes the following raw materials in parts by weight:

[0034] 42.5 parts of polyester modified acrylic resin, 10 parts of modified silicon carbide powder, 5.5 parts of adjusting functional agent, 3.5 parts of sodium carboxymethyl cellulose, 3 parts of m-phenylenediamine curing agent, 22.5 parts of toluene solvent, 2 parts of stearic acid.

[0035] The preparation method of the modified silicon carbide powder in this embodiment is:

[0036] S01: Immerse silicon carbide powder in a sufficient amount of silane coupling liquid for ultrasonic treatment, and after the ultrasonic treatment is completed, obtain silicon carbide coupling and silane coupling liquid;

[0037] S02: Add 2-5 parts of magnesium aluminum spinel and 1-3 parts of magnesium oxide to 6-8 parts of sodium citrate solution, then add 1-2 parts of sodium dodecylbenzene sulfonate, stir thoroughly, then wash with water and dry to obtain an additive;

[0038] S03: Mix the additive, silicon carbide and silane coupling liquid in a weight ratio of 5:3 and perform ball milling. After the ball milling is completed, modified silicon carbide powder is obtained.

[0039] Preferably, the ultrasonic power of the ultrasonic treatment is 350-400W, and the ultrasonic time is 20-30min; the ball milling speed of the mixing ball milling treatment is 750-850r / min, and the ball milling is 2h.

[0040] The mass fraction of the sodium citrate solution in this embodiment is 3-6%.

[0041] The silane coupling liquid of this embodiment is prepared by mixing silane coupling agent KH560 and chitosan solution in a weight ratio of 2:5.

[0042] The mass fraction of the chitosan solution in this embodiment is 2-5%.

[0043] The preparation method of the supplementary adjustment functional agent in this embodiment is as follows:

[0044] S11: Irradiate nano-aluminum oxide in a proton irradiation chamber for 5 - 10 minutes with an irradiation power of 350 - 400 W. After the irradiation ends, obtain the irradiated nano-aluminum oxide.

[0045] S12: Add 2 - 4 parts of glass fiber and 1 - 3 parts of nano-silica sol into 3 - 6 parts of lanthanum chloride solution, and then add 2 - 3 parts of zinc oxide. Stir well to obtain the adjustment liquid.

[0046] Stir the irradiated nano-aluminum oxide and the adjustment liquid according to a weight ratio of 2:5. After the stirring ends, wash with water, filter by suction, and dry to obtain the supplementary adjustment functional agent.

[0047] The mass fraction of the lanthanum chloride solution in this embodiment is 3 - 5%; the stirring speed of the stirring treatment is 750 - 850 r / min, and stir for 20 - 30 minutes.

[0048] The preparation method of a high-hardness wear-resistant coating in this embodiment includes the following steps: Weigh the raw materials according to parts by weight, and mix the raw materials evenly to obtain the high-hardness wear-resistant coating.

[0049] The hot pressing treatment pressure in this embodiment is 5 MPa.

[0050] Example 1.

[0051] A high-hardness wear-resistant coating in this embodiment includes the following raw materials by weight:

[0052] 40 parts of polyester-modified acrylic resin, 8 parts of modified silicon carbide powder, 4 parts of supplementary adjustment functional agent, 2 parts of sodium carboxymethyl cellulose, 2 parts of m-phenylenediamine curing agent, 20 parts of toluene solvent, 1 part of stearic acid.

[0053] The preparation method of the modified silicon carbide powder in this embodiment is as follows:

[0054] S01: Immerse silicon carbide powder in a sufficient amount of silane coupling liquid and perform ultrasonic treatment. After the ultrasonic treatment ends, obtain silicon carbide combined with silane coupling liquid.

[0055] S02: Add 2 parts of magnesium aluminate spinel and 1 part of magnesium oxide into 6 parts of sodium citrate solution, and then add 1 part of sodium dodecylbenzenesulfonate. Stir well, then wash with water and dry to obtain the additive.

[0056] S03: Mix and ball-mill the additive and the silicon carbide combined with silane coupling liquid according to a weight ratio of 5:3. After the ball-milling ends, obtain the modified silicon carbide powder.

[0057] Preferably, the ultrasonic power of the ultrasonic treatment is 350W, and the ultrasonic time is 20min; the ball milling speed of the mixing ball milling treatment is 750r / min, and the ball milling is 2h.

[0058] The mass fraction of the sodium citrate solution in this example is 3%.

[0059] The silane coupling liquid of this embodiment is prepared by mixing silane coupling agent KH560 and chitosan solution in a weight ratio of 2:5.

[0060] The mass fraction of the chitosan solution in this example is 2%.

[0061] The preparation method of the tonic functional agent of this embodiment is:

[0062] S11: irradiate the nano-alumina in a proton irradiation box for 5 minutes with an irradiation power of 350W. After the irradiation is completed, irradiated nano-alumina is obtained;

[0063] S12: Add 2 parts of glass fiber and 1 part of nano-silica sol to 3 parts of lanthanum chloride solution, then add 2 parts of zinc oxide, stir well, and obtain a regulating solution;

[0064] The irradiated nano-alumina and the regulating liquid are stirred in a weight ratio of 2:5. After stirring, the mixture is washed, filtered and dried to obtain a replenishing functional agent.

[0065] The mass fraction of the lanthanum chloride solution in this embodiment is 3%; the stirring speed of the stirring treatment is 750r / min, and the stirring is 20min.

[0066] The preparation method of a high-hardness wear-resistant coating of this embodiment includes the following steps: weighing raw materials according to weight, and mixing the raw materials to obtain a high-hardness wear-resistant coating.

[0067] The hot pressing pressure in this embodiment is 5MPa.

[0068] Example 2.

[0069] A high-hardness wear-resistant coating of this embodiment includes the following raw materials in parts by weight;

[0070] 45 parts of polyester modified acrylic resin, 12 parts of modified silicon carbide powder, 7 parts of replenishing functional agent, 5 parts of sodium carboxymethyl cellulose, 4 parts of m-phenylenediamine curing agent, 25 parts of toluene solvent, 3 parts of stearic acid.

[0071] The preparation method of the modified silicon carbide powder in this embodiment is:

[0072] S01: Immerse silicon carbide powder in a sufficient amount of silane coupling liquid for ultrasonic treatment, and after the ultrasonic treatment is completed, obtain silicon carbide coupling and silane coupling liquid;

[0073] S02: Add 5 parts of magnesium aluminum spinel and 3 parts of magnesium oxide to 8 parts of sodium citrate solution, then add 2 parts of sodium dodecylbenzene sulfonate, stir thoroughly, then wash with water and dry to obtain an additive;

[0074] S03: Mix the additive, silicon carbide and silane coupling liquid in a weight ratio of 5:3 and perform ball milling. After the ball milling is completed, modified silicon carbide powder is obtained.

[0075] Preferably, the ultrasonic power of the ultrasonic treatment is 400W, and the ultrasonic time is 30min; the ball milling speed of the mixing ball milling treatment is 850r / min, and the ball milling is 2h.

[0076] The mass fraction of the sodium citrate solution in this example is 6%.

[0077] The silane coupling liquid of this embodiment is prepared by mixing silane coupling agent KH560 and chitosan solution in a weight ratio of 2:5.

[0078] The mass fraction of the chitosan solution in this example is 5%.

[0079] The preparation method of the tonic functional agent of this embodiment is:

[0080] S11: irradiate the nano-alumina in a proton irradiation box for 10 minutes, with an irradiation power of 400W. After the irradiation is completed, irradiated nano-alumina is obtained;

[0081] S12: Add 4 parts of glass fiber and 3 parts of nano-silica sol to 6 parts of lanthanum chloride solution, then add 3 parts of zinc oxide, stir well, and obtain a regulating solution;

[0082] The irradiated nano-alumina and the regulating liquid are stirred in a weight ratio of 2:5. After stirring, the mixture is washed, filtered and dried to obtain a replenishing functional agent.

[0083] The mass fraction of the lanthanum chloride solution in this embodiment is 5%; the stirring speed of the stirring process is 850r / min, and the stirring is 30min.

[0084] The preparation method of a high-hardness wear-resistant coating of this embodiment includes the following steps: weighing raw materials according to weight, and mixing the raw materials to obtain a high-hardness wear-resistant coating.

[0085] The hot pressing pressure in this embodiment is 5MPa.

[0086] Example 3.

[0087] A high-hardness wear-resistant coating of this embodiment includes the following raw materials in parts by weight;

[0088] 42.5 parts of polyester modified acrylic resin, 10 parts of modified silicon carbide powder, 5.5 parts of adjusting functional agent, 3.5 parts of sodium carboxymethyl cellulose, 3 parts of m-phenylenediamine curing agent, 22.5 parts of toluene solvent, 2 parts of stearic acid.

[0089] The preparation method of the modified silicon carbide powder in this embodiment is:

[0090] S01: Immerse silicon carbide powder in a sufficient amount of silane coupling liquid for ultrasonic treatment, and after the ultrasonic treatment is completed, obtain silicon carbide coupling and silane coupling liquid;

[0091] S02: Add 3.5 parts of magnesium aluminum spinel and 2 parts of magnesium oxide to 7 parts of sodium citrate solution, then add 1.5 parts of sodium dodecylbenzene sulfonate, stir thoroughly, then wash with water and dry to obtain an additive;

[0092] S03: Mix the additive, silicon carbide and silane coupling liquid in a weight ratio of 5:3 and perform ball milling. After the ball milling is completed, modified silicon carbide powder is obtained.

[0093] Preferably, the ultrasonic power of the ultrasonic treatment is 370W, and the ultrasonic time is 25min; the ball milling speed of the mixing ball milling treatment is 800r / min, and the ball milling is 2h.

[0094] The mass fraction of the sodium citrate solution in this example is 4.5%.

[0095] The silane coupling liquid of this embodiment is prepared by mixing silane coupling agent KH560 and chitosan solution in a weight ratio of 2:5.

[0096] The mass fraction of the chitosan solution in this example is 3.5%.

[0097] The preparation method of the tonic functional agent of this embodiment is:

[0098] S11: irradiate the nano-alumina in a proton irradiation box for 7.5 minutes with an irradiation power of 370W. After the irradiation is completed, irradiated nano-alumina is obtained;

[0099] S12: Add 3 parts of glass fiber and 2 parts of nano-silica sol to 4.5 parts of lanthanum chloride solution, then add 2.5 parts of zinc oxide, stir well, and obtain a regulating solution;

[0100] The irradiated nano-alumina and the regulating liquid are stirred in a weight ratio of 2:5. After stirring, the mixture is washed, filtered and dried to obtain a replenishing functional agent.

[0101] The mass fraction of the lanthanum chloride solution in this embodiment is 4%; the stirring speed of the stirring process is 800r / min, and the stirring time is 25min.

[0102] ​A preparation method of a high-hardness wear-resistant coating according to this embodiment includes the following steps: Weigh the raw materials according to parts by weight, and mix the raw materials thoroughly to obtain the high-hardness wear-resistant coating.

[0103] The hot pressing treatment pressure in this embodiment is 5 MPa.

[0104] Comparative Example 1.

[0105] It is different from Example 3 in that modified silicon carbide powder is not added.

[0106] Comparative Example 2.

[0107] It is different from Example 3 in that the modified silicon carbide powder is not treated with silicon carbide combined with silane coupling liquid.

[0108] Comparative Example 3.

[0109] It is different from Example 3 in that the silicon carbide combined with silane coupling liquid is replaced with an aqueous solution of 5% mass fraction of silane coupling agent.

[0110] Comparative Example 4.

[0111] It is different from Example 3 in that the modified silicon carbide powder is not treated with additives.

[0112] Comparative Example 5.

[0113] It is different from Example 3 in that the preparation method of the additive is different;

[0114] Add 2 parts of magnesium oxide to 7 parts of sodium citrate solution, and stir thoroughly to obtain the additive.

[0115] Comparative Example 6.

[0116] It is different from Example 3 in that the supplementary adjustment functional agent is not added.

[0117] Comparative Example 7.

[0118] It is different from Example 3 in that the supplementary adjustment functional agent is not treated with the adjustment liquid during preparation.

[0119] Comparative Example 8.

[0120] It is different from Example 3 in that glass fiber and zinc oxide are not added to the adjustment liquid.

[0121] The conventional performance of the products of Examples 1-3 and Comparative Examples 1-8 was tested, and at the same time, they were irradiated with a 280 nm ultraviolet lamp for 10 h, and the irradiation intensity was 100 mj / m 2 , and the tests are as follows:

[0122]

[0123] It can be seen from Comparative Examples 1-8 and Example 3 that the product of Example 3 has excellent adhesion, abrasion resistance, impact resistance and hardness properties, the product performance is coordinately improved, and the weather resistance stability effect of the product is remarkable;

[0124] In the present invention, without adding modified silicon carbide powder and without adding supplementary adjusting functional agent, the performance of the product shows an obvious deteriorating trend. By using the two in coordinated cooperation and jointly synergistically, the product performance effect is the most obvious; when the modified silicon carbide powder is not treated with silicon carbide combined with silane coupling liquid, the silicon carbide combined with silane coupling liquid is replaced by an aqueous solution of silane coupling agent with a mass fraction of 5%, the modified silicon carbide powder is not treated with an additive, or the preparation method of the additive is different, the performance of the product shows a deteriorating trend. Only when the modified silicon carbide powder obtained by the method of the present invention is used, the product performance effect is the most remarkable. In addition, when the supplementary adjusting functional agent is not treated with a regulating liquid during preparation, and glass fiber and zinc oxide are not added to the regulating liquid, the performance of the product also shows a deteriorating trend. When the regulating liquid obtained by the specific method of the present invention is used, the product performance effect is the most remarkable.

[0125] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

[0126] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high hardness wear-resistant coating, characterized in that: It comprises the following raw materials in parts by weight; 40-45 parts of polyester modified acrylic resin, 8-12 parts of modified silicon carbide powder, 4-7 parts of adjusting agent, 2-5 parts of sodium carboxymethyl cellulose, 2-4 parts of m-phenylenediamine curing agent, 20-25 parts of toluene solvent, 1-3 parts of stearic acid; The preparation method of modified silicon carbide powder is: S01: immersing silicon carbide powder in a sufficient amount of silane coupling liquid for ultrasonic treatment, and then completing the ultrasonic treatment to obtain silicon carbide coupling and silane coupling liquid; S02: adding 2-5 parts by weight of magnesium aluminum spinel and 1-3 parts by weight of magnesium oxide to 6-8 parts by weight of sodium citrate solution, and then adding 1-2 parts by weight of sodium dodecylbenzene sulfonate, stirring sufficiently, and then washing with water and drying to obtain an additive; S03: mixing the additive, silicon carbide and silane coupling liquid in a weight ratio of 5:3, and subjecting the mixture to ball milling. After the ball milling is completed, modified silicon carbide powder is obtained; The preparation method of the tonic functional agent is as follows: S11: irradiating the nano-alumina in a proton irradiation box for 5-10 minutes at an irradiation power of 350-400W, and obtaining irradiated nano-alumina after the irradiation is completed; S12: adding 2-4 parts by weight of glass fiber and 1-3 parts by weight of nano-silica sol to 3-6 parts by weight of lanthanum chloride solution, and then adding 2-3 parts by weight of zinc oxide, stirring sufficiently to obtain a regulated solution; The irradiated nano-alumina and the regulating liquid are stirred at a weight ratio of 2:

5. After the stirring is completed, the mixture is washed with water, filtered and dried to obtain a replenishing and regulating functional agent.

2. A high hardness wear-resistant coating according to claim 1, characterized in that: The high hardness wear-resistant coating comprises the following raw materials in parts by weight: 42.5 parts of polyester modified acrylic resin, 10 parts of modified silicon carbide powder, 5.5 parts of adjusting functional agent, 3.5 parts of sodium carboxymethyl cellulose, 3 parts of m-phenylenediamine curing agent, 22.5 parts of toluene solvent, and 2 parts of stearic acid.

3. A high hardness wear-resistant coating according to claim 1, characterized in that: The ultrasonic power of the ultrasonic treatment is 350-400W, and the ultrasonic time is 20-30min; the ball milling speed of the mixing ball milling treatment is 750-850r / min, and the ball milling is 2h.

4. A high hardness wear-resistant coating according to claim 1, characterized in that: The mass fraction of the sodium citrate solution is 3-6%.

5. The high hardness wear-resistant coating according to claim 1, characterized in that: The silane coupling liquid is prepared by fully stirring a silane coupling agent KH560 and a chitosan solution in a weight ratio of 2:

5.

6. A high hardness wear-resistant coating according to claim 5, characterized in that: The mass fraction of the chitosan solution is 2-5%.

7. A high hardness wear-resistant coating according to claim 6, characterized in that: The mass fraction of the lanthanum chloride solution is 3-5%; the stirring speed of the stirring treatment is 750-850r / min, and the stirring is performed for 20-30min.

8. A method for preparing a high-hardness wear-resistant coating as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: The raw materials are weighed according to weight portions, and the raw materials are mixed thoroughly to obtain a high-hardness wear-resistant coating.

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