High-wear-resistance composite coating and preparation method thereof

Abstract

The invention relates to the technical field of solid waste recycling and material engineering, in particular to a high-wear-resistance composite coating and a preparation method thereof.The composite coating comprises waste glass, a coupling agent, ethyl alcohol, a film-forming base material, an additive and a curing agent; the preparation method comprises the following steps: firstly preparing a modified waste glass micro powder filler, then preparing a defoaming film-forming base material, and finally uniformly mixing the modified waste glass micro powder filler and the defoaming film-forming base material to prepare the composite coating with high wear resistance and corrosion resistance. According to the high-wear-resistance composite coating provided by the invention, the high-wear-resistance composite coating is converted into a high-performance and low-cost filler through specific process treatment, so that the environment-friendly high-wear-resistance composite coating with relatively strong mechanical property, high wear resistance, high corrosion resistance and environmental protection is obtained, and the friction coefficient of the high-wear-resistance composite coating is 0.2-0.8.

Description

Technical Field

[0001] The invention relates to the field of solid waste resource utilization and material engineering technology, in particular to a high-wear-resistant composite coating and a preparation method thereof. Background Art

[0002] Waste glass is mainly composed of silicon dioxide and other oxides, with a Mohs hardness generally higher than 5.5. It has strong hardness, wear resistance, corrosion resistance, heat resistance, electrical stability and other characteristics, and is a potential coating filler. With the acceleration of industrialization, the amount of waste glass produced in my country is increasing, with about 20 million tons of waste glass produced each year. However, the annual recycling rate of waste glass is only about 45%, and more than half of the waste glass has not been properly disposed of. Moreover, waste glass has a unique material and extremely stable chemical properties. It is difficult to treat it through incineration, natural degradation and conventional physical and chemical methods, and it is easy to cause pollution to soil and groundwater. In addition, the recycling price of waste glass is low, with an average price of 200 to 600 yuan per ton, and the recycling system is still imperfect, which seriously restricts the development of the waste glass recycling industry.

[0003] The demand for anti-corrosion and wear-resistant paints and coatings in the fields of construction, transportation, energy, etc. continues to grow. Fillers in coating materials have attracted much attention as an important part of changing the performance of coatings. Commonly used coating fillers are mainly nanomaterials, inorganic particles and organic matter, such as zinc powder, graphene oxide, silicon carbide, aluminum oxide powder, etc. However, the price of coating fillers remains high. Taking silicon carbide micropowder of medium purity and particle size as an example, its price ranges from several thousand yuan to tens of thousands of yuan per ton, which greatly increases the production cost of coating products. The coatings currently on the market have poor wear resistance. It is particularly important to find low-priced fillers with suitable performance and to develop a low-cost composite coating. Summary of the invention

[0004] The invention provides a high-wear-resistant composite coating and a preparation method thereof to solve the shortcomings of the existing coatings, namely, high production cost and poor wear resistance.

[0005] The first object of the present invention is to provide a highly wear-resistant composite coating, which comprises waste glass, a coupling agent, ethanol, a film-forming base material, an additive and a curing agent; the composite coating comprises, by mass ratio, 0.5-60 parts of waste glass, 9.5-9.9 parts of ethanol, 0.1-0.5 parts of a coupling agent, 100 parts of a film-forming base material, 1-10 parts of an additive and 10-60 parts of a curing agent.

[0006] Furthermore, the coupling agent is a silane coupling agent or a titanate coupling agent.

[0007] Furthermore, the film-forming base material is any two or more of epoxy resin, polyacrylate, fluororesin, polyurethane and / or polyester resin.

[0008] Furthermore, the additive is any two or more of silicon carbide, graphene, carbon fiber, nitride and / or carbide.

[0009] Furthermore, the curing agent is any two or more of an amine curing agent, an acid anhydride curing agent, a latent curing agent and / or a polythiol curing agent.

[0010] Furthermore, the waste glass is any one or more of waste silicate glass, waste borate glass, waste phosphate glass, waste aluminosilicate glass, waste ceramic glass, waste organic glass and / or waste special glass.

[0011] Furthermore, the friction coefficient of the highly wear-resistant and corrosion-resistant composite coating is 0.2-0.8.

[0012] The second object of the present invention is to provide a method for preparing a highly wear-resistant composite coating, the preparation method comprising:

[0013] 1) taking waste glass, washing, crushing, grinding and screening the waste glass to obtain waste glass micro powder filler for standby use;

[0014] 2) taking a coupling agent and ethanol, mixing them evenly to obtain a modified coupling agent for later use;

[0015] 3) adding the modified coupling agent to the waste glass micropowder filler, stirring evenly, and obtaining the modified waste glass micropowder filler for standby use;

[0016] 4) taking a film-forming base material, an additive and a curing agent, sequentially adding the film-forming base material, the additive and the curing agent into a stirring kettle, mixing evenly, preparing a degassing film-forming base material, and setting aside;

[0017] 5) The modified waste glass powder filler and the degassing film-forming base material are uniformly mixed to prepare a highly wear-resistant and corrosion-resistant composite coating.

[0018] Further, the preparation method is:

[0019] 1) taking 0.5-60 parts of waste glass, firstly washing the waste glass to remove stains and dust on the surface, then crushing the waste glass to obtain glass fragments with a particle size of 1-2 cm, then grinding and sieving the glass fragments with a ball mill, and finally obtaining waste glass micro powder filler for standby use;

[0020] 2) taking 9.5-9.9 parts of ethanol and 0.1-0.5 parts of coupling agent, mixing the ethanol and coupling agent evenly to obtain a modified coupling agent for standby use;

[0021] 3) adding the modified coupling agent to the waste glass micropowder filler, stirring evenly, drying to a moisture content of 20-35%, sending it into a drying furnace, drying it at a temperature of 30-160° C. for 10-120 minutes, then taking it out and cooling it to room temperature to obtain a modified waste glass micropowder filler for standby use;

[0022] 4) taking 100 parts of the film-forming base material, 1-10 parts of the additive and 10-60 parts of the curing agent, sequentially adding the film-forming base material, the additive and the curing agent into a stirring kettle, stirring for 15-30 minutes at a temperature of 80-100° C. and a rotation speed of 200-300 rpm, mixing evenly, and obtaining a defoaming film-forming base material for standby use;

[0023] 5) Taking the modified waste glass micro powder filler and the degassing film-forming base material, the modified waste glass micro powder filler and the degassing film-forming base material are vibrated for 30 minutes at 20 kHz-50 MHz by an ultrasonic oscillator to obtain a highly wear-resistant and corrosion-resistant composite coating.

[0024] Furthermore, the particle size of the waste glass powder filler is 1-300 microns.

[0025] The beneficial effects of the present invention are:

[0026] The invention provides a highly wear-resistant composite coating, which aims to utilize a renewable resource - waste glass, and convert it into a high-performance and low-cost filler through a specific process, thereby obtaining a highly wear-resistant composite coating with strong mechanical properties, high wear resistance, high corrosion resistance and environmental friendliness utilizing environmental protection.

[0027] The highly wear-resistant composite coating provided by the present invention not only realizes the efficient recycling of waste glass, but also significantly reduces the production cost of the coating industry, improves the economic benefits of related industries, and promotes the transformation of coating technology to a green and low-carbon development path.

[0028] The high-wear-resistant composite coating provided by the present invention achieves the dual goals of rationally disposing of waste glass resources and reducing coating production costs, and promotes the coordinated green development of the economy, society and environment.

[0029] The invention provides a high wear-resistant composite coating, wherein the particle size of the waste glass micropowder filler is 1-300 microns, thereby ensuring that the waste glass micropowder filler has good discreteness in the film-forming material, so as to improve the coating performance.

[0030] The invention provides a highly wear-resistant composite coating, which uses a modified coupling agent to modify waste glass micropowder filler to improve the adhesion of the coating.

[0031] The present invention provides a highly wear-resistant composite coating, wherein the film-forming base material is any two or more of epoxy resin, polyacrylate, fluororesin, polyurethane and / or polyester resin, which can effectively improve the corrosion resistance of the composite coating. The curing agent is any two or more of amine curing agent, acid anhydride curing agent, latent curing agent and / or polythiol curing agent, which can effectively improve the wear resistance of the composite coating.

[0032] The invention provides a high wear-resistant composite coating with a friction coefficient of 0.2-0.8.

[0033] The invention provides a method for preparing a highly wear-resistant composite coating, wherein the surface of waste glass powder is modified by a modified coupling agent to obtain a modified waste glass powder filler, and then a film-forming base material, an additive and a curing agent are added to prepare a highly wear-resistant composite coating with high wear resistance, high mechanical properties and high corrosion resistance.

[0034] The invention provides a method for preparing a highly wear-resistant composite coating. Film-forming base materials, additives and curing agents are fully and evenly mixed at a temperature of 10-100° C. and a rotation speed of 200-300 rpm to obtain a highly wear-resistant composite coating with strong mechanical properties, high wear resistance and high corrosion resistance.

[0035] The invention provides a method for preparing a highly wear-resistant composite coating, which uses an ultrasonic oscillator to oscillate waste glass micropowder filler and degassing film-forming basic materials, so that the prepared highly wear-resistant composite coating has high adhesion and excellent glossiness. DETAILED DESCRIPTION

[0036] In order to better understand the present invention, the technical solution of the present invention is described in detail with specific examples below, but the present invention is not limited thereto.

[0037] Other raw materials used in the present invention are all commercially available products.

[0038] Example 1 A highly wear-resistant composite coating and preparation method thereof

[0039] A highly wear-resistant composite coating comprises, by weight, 0.5 parts of old silicate glass, 9.5 parts of ethanol, 0.5 parts of a silane coupling agent, 100 parts of a film-forming base material, 1 part of an additive and 10 parts of a curing agent.

[0040] Furthermore, the additive is a mixture of silicon carbide and graphene (the addition ratio of silicon carbide to graphene is 1:1).

[0041] Furthermore, the curing agent is a mixture of an amine curing agent and an acid anhydride curing agent (the addition ratio of the amine curing agent to the acid anhydride curing agent is 1:1).

[0042] Furthermore, the film-forming base material is a mixture of epoxy resin and polyacrylate (the addition ratio of epoxy resin and polyacrylate is 1:1).

[0043] A method for preparing a highly wear-resistant composite coating, the preparation method comprising:

[0044] 1) taking waste silicate glass, firstly cleaning the waste silicate glass to remove stains and dust on the surface, then crushing the waste glass to obtain glass fragments with a particle size of 1 cm, then grinding and sieving the glass fragments with a ball mill, and finally obtaining waste glass micro powder filler for standby use;

[0045] 2) taking ethanol and a silane coupling agent, mixing the ethanol and the silane coupling agent evenly to obtain a modified coupling agent for standby use;

[0046] 3) adding the modified coupling agent to the waste glass micropowder filler, stirring evenly, drying to a moisture content of 20%, sending it into a drying furnace, drying it at a temperature of 30° C. for 10 minutes, then taking it out and cooling it to room temperature to obtain a modified waste glass micropowder filler for standby use;

[0047] 4) taking a film-forming base material, an additive and a curing agent, adding the film-forming base material, the additive and the curing agent in a stirring kettle in sequence, stirring for 15 minutes at a temperature of 80° C. and a rotation speed of 200 rpm, mixing evenly, and obtaining a defoaming film-forming base material for standby use;

[0048] 5) Taking the modified waste glass micro powder filler and the degassing film-forming basic material, the modified waste glass micro powder filler and the degassing film-forming basic material are vibrated for 30 minutes at 20 kHz by an ultrasonic vibrator to obtain a highly wear-resistant and corrosion-resistant composite coating.

[0049] Furthermore, the particle size of the waste glass powder filler is 1 micron.

[0050] Furthermore, the friction coefficient of the highly wear-resistant and corrosion-resistant composite coating is 0.3.

[0051] Example 2 A highly wear-resistant composite coating and preparation method

[0052] A highly wear-resistant composite coating comprises, by weight, 20 parts of waste borate glass, 9.7 parts of ethanol, 0.3 parts of a titanate coupling agent, 100 parts of a film-forming base material, 5 parts of an additive and 30 parts of a curing agent.

[0053] Furthermore, the additive is a mixture of carbon fiber and nitride (the addition ratio of fiber to nitride is 2:1).

[0054] Furthermore, the curing agent is a mixture of a latent curing agent and a polythiol curing agent (the addition ratio of the latent curing agent to the polythiol curing agent is 2:1).

[0055] Furthermore, the film-forming base material is a mixture of fluororesin and polyurethane (the addition ratio of fluororesin to polyurethane is 1:0.8).

[0056] A method for preparing a highly wear-resistant composite coating, the preparation method comprising:

[0057] 1) taking waste borate glass, firstly cleaning the waste borate glass to remove stains and dust on the surface, then crushing the waste glass to obtain glass fragments with a particle size of 1.5 cm, then grinding and sieving the glass fragments with a ball mill, and finally obtaining waste glass micro powder filler for standby use;

[0058] 2) taking ethanol and a titanate coupling agent, mixing the ethanol and the titanate coupling agent evenly to obtain a modified coupling agent for standby use;

[0059] 3) adding the modified coupling agent to the waste glass micropowder filler, stirring evenly, drying to a moisture content of 25%, sending it into a drying furnace, drying it at a temperature of 80° C. for 80 minutes, then taking it out and cooling it to room temperature to obtain a modified waste glass micropowder filler for standby use;

[0060] 4) taking a film-forming base material, an additive and a curing agent, adding the film-forming base material, the additive and the curing agent in a stirring kettle in sequence, stirring for 20 minutes at a temperature of 90° C. and a rotation speed of 250 rpm, mixing evenly, and obtaining a defoaming film-forming base material for standby use;

[0061] 5) Taking the modified waste glass micro powder filler and the degassing film-forming base material, the modified waste glass micro powder filler and the degassing film-forming base material are vibrated for 30 minutes at 35 MHz by an ultrasonic oscillator to obtain a highly wear-resistant and corrosion-resistant composite coating.

[0062] Furthermore, the particle size of the waste glass powder filler is 150 microns.

[0063] Furthermore, the friction coefficient of the highly wear-resistant and corrosion-resistant composite coating is 0.5.

[0064] Example 3 A highly wear-resistant composite coating and preparation method

[0065] A highly wear-resistant composite coating comprises, by weight, 30 parts of waste glass, 9.5 parts of ethanol, 0.5 parts of a silane coupling agent, 100 parts of a film-forming base material, 10 parts of an additive and 40 parts of a curing agent.

[0066] Furthermore, the film-forming base material is a mixture of polyurethane and polyester resin (the addition ratio of polyurethane to polyester resin is 0.8:1).

[0067] Furthermore, the waste glass is a mixture of waste aluminosilicate glass and waste ceramic glass (the addition ratio of waste aluminosilicate glass to waste ceramic glass is 1:1).

[0068] Furthermore, the additive is a mixture of nitride and carbide (the addition ratio of nitride to carbide is 0.7:0.5).

[0069] Furthermore, the curing agent is a mixture of an amine curing agent and a polythiol curing agent (the addition ratio of the amine curing agent to the polythiol curing agent is 0.4:0.6).

[0070] A method for preparing a highly wear-resistant composite coating, the preparation method comprising:

[0071] 1) taking waste glass, firstly cleaning the waste glass to remove stains and dust on the surface, then crushing the waste glass to obtain glass fragments with a particle size of 2 cm, then grinding and sieving the glass fragments with a ball mill, and finally obtaining waste glass micro powder filler for standby use;

[0072] 2) taking ethanol and a silane coupling agent, mixing the ethanol and the silane coupling agent evenly to obtain a modified coupling agent for standby use;

[0073] 3) adding the modified coupling agent to the waste glass powder filler, stirring evenly, drying to a moisture content of 30%, sending it into a drying furnace, drying it at a temperature of 120° C. for 90 minutes, then taking it out and cooling it to room temperature to obtain a modified waste glass powder filler for standby use;

[0074] 4) taking a film-forming base material, an additive and a curing agent, adding the film-forming base material, the additive and the curing agent in a stirring kettle in sequence, stirring for 25 minutes at a temperature of 95° C. and a rotation speed of 280 rpm, mixing evenly, and obtaining a defoaming film-forming base material for standby use;

[0075] 5) Taking the modified waste glass micro powder filler and the degassing film-forming base material, the modified waste glass micro powder filler and the degassing film-forming base material are vibrated for 30 minutes at 40 MHz by an ultrasonic oscillator to obtain a highly wear-resistant and corrosion-resistant composite coating.

[0076] Furthermore, the particle size of the waste glass powder filler is 200 microns.

[0077] Furthermore, the friction coefficient of the highly wear-resistant and corrosion-resistant composite coating is 0.3.

[0078] Example 4 A high wear-resistant composite coating and preparation method

[0079] A highly wear-resistant composite coating, the composite coating, in terms of mass ratio, comprises 60 parts of waste glass, 9.9 parts of ethanol, 0.1 parts of a titanate coupling agent, 100 parts of a film-forming base material, 10 parts of an additive and 60 parts of a curing agent.

[0080] Furthermore, the film-forming base material is a mixture of polyacrylate and polyurethane (the addition ratio of polyacrylate and polyurethane is 1:1).

[0081] Furthermore, the additive is a mixture of silicon carbide, carbon fiber and nitride polyacrylate (the addition ratio of silicon carbide, carbon fiber and nitride polyacrylate is 0.5:0.8:0.4).

[0082] Furthermore, the curing agent is a mixture of an amine curing agent, an acid anhydride curing agent and a polythiol curing agent (the addition ratio of the amine curing agent, the acid anhydride curing agent and the polythiol curing agent is 0.3:0.5:0.7).

[0083] Furthermore, the waste glass is a mixture of waste aluminosilicate glass, waste organic glass and waste special glass (the addition ratio of waste aluminosilicate glass, waste organic glass and waste special glass is 1:1:1).

[0084] A method for preparing a highly wear-resistant composite coating, the preparation method comprising:

[0085] 1) taking waste glass, firstly cleaning the waste glass to remove stains and dust on the surface, then crushing the waste glass to obtain glass fragments with a particle size of 2 cm, then grinding and sieving the glass fragments with a ball mill, and finally obtaining waste glass micro powder filler for standby use;

[0086] 2) taking ethanol and a titanate coupling agent, mixing the ethanol and the titanate coupling agent evenly to obtain a modified coupling agent for standby use;

[0087] 3) adding the modified coupling agent to the waste glass micropowder filler, stirring evenly, drying to a moisture content of 30%, sending it into a drying furnace, drying it at a temperature of 160° C. for 120 minutes, then taking it out and cooling it to room temperature to obtain a modified waste glass micropowder filler for standby use;

[0088] 4) taking a film-forming base material, an additive and a curing agent, adding the film-forming base material, the additive and the curing agent in a stirring kettle in sequence, stirring for 30 minutes at a temperature of 100° C. and a rotation speed of 300 rpm, mixing evenly, and obtaining a defoaming film-forming base material for standby use;

[0089] 5) Taking the modified waste glass micro powder filler and the degassing film-forming base material, the modified waste glass micro powder filler and the degassing film-forming base material are vibrated for 30 minutes at 50 MHz by an ultrasonic oscillator to obtain a highly wear-resistant and corrosion-resistant composite coating.

[0090] Furthermore, the particle size of the waste glass powder filler is 300 microns.

[0091] Furthermore, the friction coefficient of the highly wear-resistant and corrosion-resistant composite coating is 0.5.

[0092] Comparative Example 1

[0093] The difference between Comparative Example 1 and Example 2 is that the film-forming base material is missing in Comparative Example 1, and the other contents are the same.

[0094] Comparative Example 2

[0095] The difference between Comparative Example 2 and Example 2 is that the modified coupling agent is missing in Comparative Example 2, and the other aspects are the same.

[0096] The highly wear-resistant and corrosion-resistant composite coating prepared in Examples 1-4 of the present invention is used for coating, and the coating surface is uniform in color, smooth and flat, without cracks, missing coating, peeling, bubbles, pores, sagging, orange peel, particles and other defects.

[0097] The high wear-resistant and corrosion-resistant composite coating provided by the present invention has the following corrosion resistance: the coating film is not damaged when immersed in a 50g / L sodium chloride solution at (80±2)°C for 90 minutes.

[0098] The high wear-resistant and corrosion-resistant composite coating provided by the invention has a coating film hardness of 4H.

[0099] The friction coefficient of the highly wear-resistant and corrosion-resistant composite coating provided by the invention is 0.2-0.8.

[0100] Performance Testing

[0101] Detection Methods

[0102] The spraying construction was performed on Examples 1 to 4, Comparative Examples 1 to 2 and commercially available coatings respectively; the sample was baked at 60° C. for 1 hour, and after curing at room temperature for 10 days, the coating appearance was visually inspected, and then the coating was repeatedly rubbed 15 times with a steel ball weighing 1 kg; the glossiness of the unrubbed and rubbed coatings was tested respectively; the gloss retention rate was calculated according to the formula: G1 / G0*100%, and the results are shown in Table 1;

[0103]

[0104]

[0105] Table 2: Performance index tests of the products in Examples 1 to 4 and commercially available coatings

[0106]

[0107] It can be seen from the above table that the products in this application are superior to the products on the market in terms of coating hardness, wear resistance, corrosion resistance, and glossiness after scratching (60°). Its glossiness and corrosion resistance are much higher than those of commercially available products. The friction coefficient reaches 0.2-0.8, and the hardness reaches 4H level. The products in this application have strong market competitiveness relative to commercially available products.

[0108] The raw materials listed in the present invention, as well as the upper and lower limits and interval values ​​of the raw materials of the present invention, and the upper and lower limits and interval values ​​of the process parameters can all realize the present invention, and the embodiments are not listed one by one here.

[0109] The above is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and changes can be made without departing from the principle of the present invention, and these improvements and changes are also regarded as the protection scope of the present invention.

Claims

1. A highly wear-resistant composite coating, characterized in that: The composite coating comprises waste glass, a coupling agent, ethanol, a film-forming base material, an additive and a curing agent; The composite coating comprises, by mass ratio, 0.5-60 parts of waste glass, 9.5-9.9 parts of ethanol, 0.1-0.5 parts of coupling agent, 100 parts of film-forming base material, 1-10 parts of additives and 10-60 parts of curing agent.

2. A highly wear-resistant composite coating according to claim 1, characterized in that: The coupling agent is a silane coupling agent or a titanate coupling agent.

3. A highly wear-resistant composite coating according to claim 1, characterized in that: The film-forming base material is any two or more of epoxy resin, polyacrylate, fluororesin, polyurethane and / or polyester resin.

4. A highly wear-resistant composite coating according to claim 1, characterized in that: The additive is any two or more of silicon carbide, graphene, carbon fiber, nitride and / or carbide.

5. A highly wear-resistant composite coating according to claim 1, characterized in that: The curing agent is any two or more of an amine curing agent, an acid anhydride curing agent, a latent curing agent and / or a polythiol curing agent.

6. A highly wear-resistant composite coating according to claim 1, characterized in that: The waste glass is any one or more of waste silicate glass, waste borate glass, waste phosphate glass, waste aluminosilicate glass, waste ceramic glass, waste organic glass and / or waste special glass.

7. A highly wear-resistant composite coating according to claim 1, characterized in that: The friction coefficient of the highly wear-resistant and corrosion-resistant composite coating is 0.2-0.

8.

8. The method for preparing a highly wear-resistant composite coating according to claim 1, characterized in that: The preparation method is: 1) taking waste glass, washing, crushing, grinding and screening the waste glass to obtain waste glass micro powder filler for standby use; 2) taking a coupling agent and ethanol, mixing them evenly to obtain a modified coupling agent for later use; 3) adding the modified coupling agent to the waste glass micropowder filler, stirring evenly, and obtaining the modified waste glass micropowder filler for standby use; 4) taking a film-forming base material, an additive and a curing agent, sequentially adding the film-forming base material, the additive and the curing agent into a stirring kettle, mixing evenly, preparing a degassing film-forming base material, and setting aside; 5) The modified waste glass powder filler and the degassing film-forming base material are uniformly mixed to prepare a highly wear-resistant and corrosion-resistant composite coating.

9. The method for preparing a highly wear-resistant composite coating according to claim 1 or 8, characterized in that: The preparation method is: 1) taking 0.5-60 parts of waste glass, firstly washing the waste glass to remove stains and dust on the surface, then crushing the waste glass to obtain glass fragments with a particle size of 1-2 cm, then grinding and sieving the glass fragments with a ball mill, and finally obtaining waste glass micro powder filler for standby use; 2) taking 9.5-9.9 parts of ethanol and 0.1-0.5 parts of coupling agent, mixing the ethanol and coupling agent evenly to obtain a modified coupling agent for standby use; 3) adding the modified coupling agent to the waste glass micropowder filler, stirring evenly, drying to a moisture content of 20-35%, sending it into a drying furnace, drying it at a temperature of 30-160° C. for 10-120 minutes, then taking it out and cooling it to room temperature to obtain a modified waste glass micropowder filler for standby use; 4) taking 100 parts of the film-forming base material, 1-10 parts of the additive and 10-60 parts of the curing agent, sequentially adding the film-forming base material, the additive and the curing agent into a stirring kettle, stirring for 15-30 minutes at a temperature of 80-100° C. and a rotation speed of 200-300 rpm, mixing evenly, and obtaining a defoaming film-forming base material for standby use; 5) Taking the modified waste glass micro powder filler and the degassing film-forming base material, the modified waste glass micro powder filler and the degassing film-forming base material are vibrated for 30 minutes at 20 kHz-50 MHz by an ultrasonic oscillator to obtain a highly wear-resistant and corrosion-resistant composite coating.

10. A method for preparing a highly wear-resistant composite coating according to any one of claims 8 or 9, characterized in that: The particle size of the waste glass powder filler is 1-300 microns.

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