Dustproof coating and method, air duct, wind wheel and air conditioner

Abstract

The invention relates to a dustproof coating and method, an air duct, a wind wheel and an air conditioner. The dustproof coating comprises 100 parts of resin, 5-20 parts of a diluent, 0-3 parts of a silane coupling agent, at least 10 parts of nano zirconium dioxide and 8-50 parts of a curing agent. The dustproof coating provided by the embodiment of the invention can form a dustproof coating with high hardness and a good dustproof effect, and the long-term effect of the dustproof effect is good.

Description

Technical Field

[0001] The embodiments of the present application relate to but are not limited to the field of air-conditioning technology, and specifically to dust-proof coatings and methods, air ducts, wind wheels and air conditioners. Background Art

[0002] At present, the base material commonly used for the impeller of air conditioner products is glass fiber reinforced resin, but dust easily accumulates and adheres to the impeller. In order to reduce the amount of dust attached to the impeller of air conditioner during use, a dustproof coating can be set on the surface of the impeller. At present, the dustproof coatings used to form dustproof coatings are mainly antistatic coatings and low surface energy coatings. Antistatic coatings reduce static electricity by adding antistatic agents to achieve the purpose of reducing dust adsorption, but when the relative humidity is high, the antistatic effect is easy to fail. Low surface energy coatings include fluorocarbon coatings, UV light-cured fluorocarbon coatings, silicone coatings, etc., which mainly use fluorine-containing materials and other modifiers to chemically modify the surface of the coating so that the coating obtains low surface energy characteristics, reduces the adhesion to dust, and achieves the purpose of reducing dust adsorption, but the modifier is easy to precipitate in the use environment and will be lost, resulting in a low long-term dustproof effect. In addition, the dustproof coating is easily worn out due to long-term friction with the air, which will also reduce the long-term effectiveness of the dustproof effect. Summary of the invention

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of protection of this application.

[0004] The embodiments of the present application provide a dust-proof coating and method, an air duct, a wind wheel and an air conditioner. The dust-proof coating can form a dust-proof coating with high hardness and good dust-proof effect, and the dust-proof effect has good long-term effectiveness.

[0005] An embodiment of the present application provides a dustproof coating, which includes, by weight, 100 parts of resin, 5 to 20 parts of diluent, 0 to 3 parts of silane coupling agent, at least 10 parts of nano zirconium dioxide and 8 to 50 parts of curing agent.

[0006] In an embodiment of the present application, the nano zirconium dioxide may be 10 parts to 60 parts.

[0007] In an embodiment of the present application, the dustproof coating may include, by weight: 100 parts of resin, 5 to 10 parts of diluent, 1 to 2 parts of silane coupling agent, 50 to 60 parts of nano zirconium dioxide and 20 to 25 parts of curing agent.

[0008] In an embodiment of the present application, the surface pencil hardness of the coating after curing is above 1H.

[0009] In an embodiment of the present application, the resin may be selected from any one or more of epoxy resin, acrylate, polyurethane and silicone resin.

[0010] In an embodiment of the present application, the resin may be bisphenol A epoxy resin.

[0011] In an embodiment of the present application, the curing agent may be selected from any one or more of aliphatic amine curing agents, alicyclic amine curing agents, aromatic amine curing agents and polyamide curing agents.

[0012] In an embodiment of the present application, the diluent may be selected from any one or more of ethyl acetate, acetone, isopropanol, xylene and butyl acetate.

[0013] The embodiment of the present application also provides a dust prevention method, which comprises: using the dust prevention coating provided in the embodiment of the present application to apply a dust prevention coating on a substrate with dust prevention requirements.

[0014] The embodiment of the present application also provides an air duct, which includes a dust-proof coating, and the dust-proof coating includes the dust-proof coating provided in the embodiment of the present application.

[0015] In the embodiment of the air duct of the present application, the thickness of the dustproof coating may be 5 μm to 30 μm.

[0016] An embodiment of the present application further provides a wind wheel, which includes a dust-proof coating, and the dust-proof coating includes the dust-proof coating provided in the embodiment of the present application.

[0017] In the embodiment of the wind wheel of the present application, the thickness of the dustproof coating may be 5 μm to 30 μm.

[0018] The embodiment of the present application also provides an air conditioner, which includes at least one of the air duct and the wind wheel provided in the embodiment of the present application.

[0019] The dustproof coating of the embodiment of the present application can obtain a coating with higher hardness by introducing nano zirconium dioxide. Moreover, the inventor of the present application found that the hardness of the coating is related to the dustproof effect. A higher hardness is conducive to reducing the adhesion and adsorption of dust by the coating, reducing the static effect, and thus obtaining a better dustproof effect. Therefore, the dustproof coating of the embodiment of the present application can form a coating with high hardness and good dustproof effect, and the dustproof effect is long-lasting and the coating has good wear resistance.

[0020] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application are described in detail below. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

[0022] The inventors of the present application have discovered that the hardness of the coating is related to the dustproof effect. A higher hardness is beneficial to reducing the adhesion and adsorption of dust by the coating and reducing static electricity, thereby achieving a better dustproof effect.

[0023] Based on this, an embodiment of the present application provides a dust-proof coating, which includes a resin, a diluent, nano zirconium dioxide and a curing agent.

[0024] In an embodiment of the present application, the dustproof coating may include, by weight: 100 parts of resin, 5 to 20 parts of diluent, 0 to 3 parts of silane coupling agent, at least 10 parts of nano zirconium dioxide and 8 to 50 parts of curing agent.

[0025] The dust-proof coating of the embodiment of the present application can improve the hardness of the dust-proof coating by introducing nano zirconium dioxide. Therefore, the dust-proof coating of the embodiment of the present application can form a coating with high hardness and good dust-proof effect, and the dust-proof effect is long-lasting and the coating has good wear resistance.

[0026] In the embodiments of the present application, based on weight, the resin is 100 parts, and the nano zirconium dioxide can be 10 parts to 70 parts.

[0027] In an embodiment of the present application, the dustproof coating may include, by weight: 100 parts of resin, 5 to 20 parts of diluent, 0 to 3 parts of silane coupling agent, 10 to 60 parts of nano zirconium dioxide and 8 to 50 parts of curing agent.

[0028] In an embodiment of the present application, the resin is 100 parts by weight, and the diluent can be 5 to 20 parts. When the diluent is 5 to 20 parts, the dustproof coating can have a suitable curing time and a higher hardness. For example, the diluent can be 5 parts, 7 parts, 10 parts, 12 parts, 15 parts, 17 parts or 20 parts; for another example, the diluent can be 5 to 10 parts.

[0029] In the embodiment of the present application, the resin is 100 parts by weight, and the silane coupling agent can be 0 to 3 parts. The silane coupling agent can improve the bonding force between the nano zirconium dioxide and the resin. When the silane coupling agent is 0 to 3 parts, the nano zirconium dioxide and the resin can have a suitable bonding force, which is beneficial to improve the hardness of the dustproof coating. For example, the silane coupling agent can be 0 parts, 0.5 parts, 1 parts, 1.5 parts, 2 parts, 2.5 parts or 3 parts; for another example, the silane coupling agent can be 1 to 2 parts.

[0030] In an embodiment of the present application, the resin is 100 parts by weight, and the nano zirconium dioxide is at least 10 parts, for example, the nano zirconium dioxide can be 10 to 60 parts. The addition of nano zirconium dioxide can increase the hardness of the dustproof coating. When the addition amount of nano zirconium dioxide is in the range of 10 to 60 parts, it is beneficial to use less nano zirconium dioxide to obtain a greater improvement in the hardness of the dustproof coating. For example, the nano zirconium dioxide can be 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, 50 parts, 55 parts or 60 parts; for another example, the nano zirconium dioxide can be 50 to 60 parts.

[0031] In an embodiment of the present application, the resin is 100 parts by weight, and the curing agent can be 8 to 50 parts. When the curing agent is 8 to 50 parts, the dust-proof coating can have higher hardness and adhesion, and the curing speed will not be too fast, and sufficient construction time can be provided. For example, the curing agent can be 8 parts, 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts or 50 parts; for another example, the curing agent can be 20 to 25 parts.

[0032] In an embodiment of the present application, the dustproof coating may be composed of the following components by weight: 100 parts of resin, 5 to 20 parts of diluent, 10 to 60 parts of nano zirconium dioxide, 8 to 50 parts of curing agent and 0 to 3 parts of silane coupling agent.

[0033] In an embodiment of the present application, the dustproof coating may include, by weight: 100 parts of resin, 5 to 10 parts of diluent, 1 to 2 parts of silane coupling agent, 50 to 60 parts of nano zirconium dioxide and 20 to 25 parts of curing agent.

[0034] In an embodiment of the present application, the dustproof coating may be composed of the following components by weight: 100 parts of resin, 5 to 10 parts of diluent, 1 to 2 parts of silane coupling agent, 50 to 60 parts of nano zirconium dioxide and 20 to 25 parts of curing agent.

[0035] In an embodiment of the present application, the surface pencil hardness of the coating after curing may be above 1H.

[0036] In an embodiment of the present application, the average particle size of the nano zirconium dioxide may be 5 nm to 300 nm.

[0037] In an embodiment of the present application, the resin may be selected from any one or more of epoxy resin, acrylate, polyurethane and silicone resin.

[0038] In the embodiment of the present application, the resin may be an epoxy resin, for example, a bisphenol A epoxy resin. The bisphenol A epoxy resin contains benzene rings, which is conducive to obtaining a dustproof coating with higher hardness.

[0039] In the embodiment of the present application, the bisphenol A epoxy resin can be selected from any one or both of E51 and E44. When the bisphenol A epoxy resin is any one or both of E51 and E44, the obtained dustproof coating has high bonding strength and strong corrosion resistance.

[0040] In an embodiment of the present application, the silane coupling agent may include any one or more of KH550 and KH560.

[0041] In an embodiment of the present application, the diluent may be an organic solvent, for example, may be selected from any one or more of ethyl acetate, acetone, isopropanol, xylene and butyl acetate.

[0042] In the embodiments of the present application, the curing agent can be selected from any one or more of aliphatic amine curing agents, alicyclic amine curing agents, aromatic amine curing agents and polyamide curing agents. Aliphatic amine curing agents, alicyclic amine curing agents, aromatic amine curing agents and polyamide curing agents have the characteristics of good curing performance, low viscosity, low toxicity, strong adaptability, and wide application performance. In particular, alicyclic amine curing agents and aromatic amine curing agents have a high hardness due to the presence of a cyclic structure, which is conducive to obtaining a dust-proof coating with a high hardness.

[0043] It should be understood that the resins, diluents, and curing agents used in dust-proof coatings are not limited to the specific materials listed above. Any materials that can achieve the effects of various reagents can be used in the preparation of the dust-proof coatings of the embodiments of the present application. The specific materials listed above do not constitute any formal or substantive limitation on the present application.

[0044] In an embodiment of the present application, the dustproof coating may further include other additives, for example, the dustproof coating may include any one or more of a defoamer, a dispersant, a leveling agent, a surface tension additive, an antibacterial agent, and an antioxidant.

[0045] In the embodiments of the present application, based on weight, the resin is 100 parts, and the total amount of the other additives added can be 0 parts to 3 parts, for example, 0 parts, 1 parts, 2 parts or 3 parts.

[0046] The present application does not specifically limit the types of the defoamer, dispersant, leveling agent, surface tension additive, antibacterial agent, and antioxidant, and those skilled in the art can select them as needed. For example, the defoamer may include any one or more of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropanolamine ether, and polyoxypropylene glycerol ether; the dispersant may include any one or more of fatty acid, aliphatic amide, and stearate; the leveling agent may include any one or more of German BYK leveling agent BYK-333, BYK-310, and Hemmingsdeqian 835 leveling agent; the antioxidant may include any one or more of 1010, 1076, 1098, and 168.

[0047] The embodiment of the present application also provides a dustproof method, which includes: using the dustproof coating provided in the embodiment of the present application to form a dustproof coating on a substrate with dustproof requirements. For example, the dustproof coating can be applied (for example, sprayed, scraped, rolled, etc.) or deposited on a substrate to form a dustproof coating on the substrate.

[0048] In the embodiments of the present application, the substrate may include but is not limited to an optical lens with dustproof requirements, outdoor glass, an air duct of an air conditioner, a wind wheel, etc.

[0049] The embodiment of the present application also provides an air duct, the air duct includes a dustproof coating, and the dustproof coating includes the dustproof coating provided in the embodiment of the present application. For example, the dustproof coating can be located on the surface of the air duct in contact with the fluid. The thickness of the dustproof coating in the air duct can be 5 μm to 30 μm, for example, 5 μm, 10 μm, 15 μm, 20 μm, 25 μm or 30 μm.

[0050] The embodiment of the present application further provides a wind wheel, the wind wheel comprising a dustproof coating, the dustproof coating comprising the dustproof coating provided in the embodiment of the present application. For example, the dustproof coating may be located on the surface of the wind wheel. The thickness of the dustproof coating in the wind wheel may be 5 μm to 30 μm, for example, 5 μm, 10 μm, 15 μm, 20 μm, 25 μm or 30 μm.

[0051] In the embodiment of the present application, the wind wheel can be a crossflow wind wheel or a centrifugal wind wheel for air conditioning. The embodiment of the present application also provides an air conditioner, which includes at least one of the wind duct and the wind wheel provided in the embodiment of the present application.

[0052] The silane coupling agent used in the following examples and comparative examples is KH550 or KH560, the defoaming agent is polyoxyethylene polyoxypropanolamine ether (BAPE), the leveling agent is BYK-333, and the antibacterial agent is a silver ion antibacterial agent; other raw materials and reagents are common commercial products, and the average particle size of nano zirconium dioxide is in the range of 5nm to 300nm.

[0053] Example 1

[0054] Weigh 100 parts by weight of epoxy resin E51, 10 parts by weight of ethyl acetate, 60 parts by weight of nano zirconium dioxide, 1.5 parts by weight of silane coupling agent KH550, and 0.8 parts by weight of defoaming agent.

[0055] The above materials were stirred at 35° C. for 30 min at a stirring speed of 3500 rpm to obtain a coating raw material.

[0056] 25 parts by weight of aromatic amine curing agent 4,4'-diaminodiphenylmethane (DDM) was added, and the mixture was stirred at 1500 rpm for 5 minutes to obtain an epoxy resin dustproof coating.

[0057] The above epoxy resin dustproof coating is applied to the wind wheel with a coating thickness of 20 μm.

[0058] Example 2

[0059] Weigh 100 parts by weight of epoxy resin E44, 10 parts by weight of ethyl acetate, 60 parts by weight of nano zirconium dioxide, 1.5 parts by weight of silane coupling agent KH560, and 1 part by weight of leveling agent.

[0060] The above materials were stirred at 35° C. for 30 min at a stirring speed of 3500 rpm to obtain a coating raw material.

[0061] 20 parts by weight of alicyclic amine curing agent 1,2-cyclohexanediamine were added, and the mixture was stirred at 1500 rpm for 5 minutes to obtain an epoxy resin dustproof coating.

[0062] The above epoxy resin dustproof coating is applied to the wind wheel with a coating thickness of 18 μm.

[0063] Example 3

[0064] Weigh 100 parts by weight of epoxy resin E51, 8 parts by weight of acetone, 10 parts by weight of nano zirconium dioxide, 1.5 parts by weight of silane coupling agent KH550, and 1 part by weight of antibacterial agent.

[0065] The above materials were stirred at 30° C. for 20 min at a stirring speed of 3000 rpm to obtain a coating raw material.

[0066] 25 parts by weight of aromatic amine curing agent 4,4'-diaminodiphenylmethane (DDM) was added, and the mixture was stirred at 1200 rpm for 5 minutes to obtain an epoxy resin dustproof coating.

[0067] The above epoxy resin dustproof coating is applied to the wind wheel with a coating thickness of 15 μm.

[0068] Example 4

[0069] Weigh 100 parts by weight of epoxy resin E44, 10 parts by weight of acetone, and 30 parts by weight of nano zirconium dioxide.

[0070] The above materials were stirred at 30° C. for 35 min at a stirring speed of 4000 rpm to obtain a coating raw material.

[0071] 20 parts by weight of alicyclic amine curing agent 1,2-cyclohexanediamine were added and stirred at 1500 rpm for 5 minutes to obtain an epoxy resin dustproof coating.

[0072] The epoxy resin dustproof coating is applied to the wind wheel with a coating thickness of 30 μm.

[0073] Example 5

[0074] Weigh 100 parts by weight of epoxy resin E51, 10 parts by weight of ethyl acetate, 50 parts by weight of nano zirconium dioxide, 1.5 parts by weight of silane coupling agent KH560, and 0.8 parts by weight of defoaming agent.

[0075] The above materials were stirred at 35° C. for 30 min at a stirring speed of 3500 rpm to obtain a coating raw material.

[0076] 25 parts by weight of aromatic amine curing agent 4,4'-diaminodiphenylmethane (DDM) was added, and the mixture was stirred at 1500 rpm for 5 minutes to obtain an epoxy resin dustproof coating.

[0077] The above epoxy resin dustproof coating is applied to the wind wheel with a coating thickness of 20 μm.

[0078] Example 6

[0079] Weigh 100 parts by weight of epoxy resin E51, 10 parts by weight of ethyl acetate, 60 parts by weight of nano zirconium dioxide, 1.5 parts by weight of silane coupling agent KH550, and 0.8 parts by weight of defoaming agent.

[0080] The above materials were stirred at 35° C. for 30 min at a stirring speed of 3500 rpm to obtain a coating raw material.

[0081] 20 parts by weight of a fatty amine curing agent, diethylenetriamine, was added, and the mixture was stirred at 1500 rpm for 5 minutes to obtain an epoxy resin dustproof coating.

[0082] The above epoxy resin dustproof coating is applied to the wind wheel with a coating thickness of 20 μm.

[0083] Example 7

[0084] Weigh 100 parts by weight of epoxy resin E51, 10 parts by weight of ethyl acetate, 60 parts by weight of nano zirconium dioxide, 1.5 parts by weight of silane coupling agent KH550, and 0.8 parts by weight of defoaming agent.

[0085] The above materials were stirred at 35° C. for 30 min at a stirring speed of 3500 rpm to obtain a coating raw material.

[0086] 10 parts by weight of curing agent 4,4'-diaminodiphenylmethane (DDM) was added, and the mixture was stirred at 1500 rpm for 5 minutes to obtain an epoxy resin dustproof coating.

[0087] The above epoxy resin dustproof coating is applied to the wind wheel with a coating thickness of 13 μm.

[0088] Example 8

[0089] Weigh 100 parts by weight of epoxy resin E51, 10 parts by weight of ethyl acetate, 70 parts by weight of nano zirconium dioxide, 1.5 parts by weight of silane coupling agent KH550, and 0.8 parts by weight of defoaming agent.

[0090] The above materials were stirred at 35° C. for 30 min at a stirring speed of 3500 rpm to obtain a coating raw material.

[0091] 25 parts by weight of aromatic amine curing agent 4,4'-diaminodiphenylmethane (DDM) was added, and the mixture was stirred at 1500 rpm for 5 minutes to obtain an epoxy resin dustproof coating.

[0092] The above epoxy resin dustproof coating is applied to the wind wheel with a coating thickness of 20 μm.

[0093] Comparative Example 1

[0094] A surface coating commonly used for air conditioner impellers was prepared. The formulation of the surface coating was consistent with that of Example 1 except that nano zirconium dioxide was not added. The coating thickness was 20 μm.

[0095] Performance Testing

[0096] Hardness test: The surface pencil hardness of the coating after curing is tested according to the Chinese national standard GB / T6739-2006.

[0097] Initial dustproof rate test

[0098] For the anti-dust accumulation test, ASHRAE artificial dust is used. The impeller is placed in a sealed box, and 1 g of artificial dust is introduced after starting. The impeller runs for 16 h and then stops for 8 h. After 3 cycles for a total of 72 h, the impeller is taken out. The dust accumulation amount on the surface area is obtained by observing the dust accumulation condition on the surface of the sample before and after operation and the mass change of the test sample before and after operation. Through the test, the dust accumulation amount of Comparative Example 1 is obtained, and taking Comparative Example 1 as a reference, the reduction rate of the dust accumulation amount of the sample of the example is calculated.

[0099] Let the weight change of Comparative Example 1 be a and the weight change of the sample of the example be b. Then the dust-proof rate x is calculated as: x = [(a - b) / a] × 100%. The test results of the coating hardness and the initial dust-proof rate are shown in Table 1.

[0100] Table 1 Initial hardness and dust-proof rate

[0101] Comparative Example 1 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 hardness 1H 5H 5H 2H 3H 5H 5H 4H 5H Dustproof rate 0％ 35％ 32％ 8％ 17％ 29％ 28％ 22％ 34％

[0102] It can be seen that compared with the coating formed by the dust-proof coating without adding nano-zirconia, the coating formed by the dust-proof coating adding nano-zirconia in the example of the present application has significantly higher hardness and significantly higher dust-proof rate. Moreover, the higher the hardness of the coating, the higher the dust-proof rate, indicating that there is a relationship between the dust-proof rate and the hardness of the coating. The addition amount of nano-zirconia in Example 3 is significantly lower than that in Example 1, and the addition amount of nano-zirconia in Example 4 is also lower and the dust-proof coating does not add silane coupling agent, resulting in lower hardness and dust-proof rate of the formed coating than those in Example 1. In addition, the amount of nano-zirconia used in Example 8 is more than that in Example 1, but the dust-proof effect has not been improved compared with Example 1. Therefore, considering the production cost and the dust-proof effect comprehensively, based on the resin addition amount of 100 parts by weight, the addition amount of nano-zirconia can be selected from 10 parts by weight to 60 parts by weight.

[0103] Long-term operation dust-proof rate test

[0104] The impeller is first continuously operated in dry air for three months. Before the long-term operation dust-proof rate test, the dust on the surface of the impeller is first cleaned, and then the test is carried out using the same method as the initial dust-proof rate test. The test results are shown in Table 2.

[0105] Table 2 Long-term operation hardness and dust-proof rate

[0106] Comparative Example 1 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 hardness 1H 5H 5H 2H 3H 5H 5H 4H 5H Dustproof rate 0％ 84％ 82％ 23％ 56％ 80％ 76％ 67％ 83％

[0107] After continuously operating for three months, the surface dust-proof rate test is carried out again. Since the coating on the impeller of Comparative Example 1 is worn on the surface after continuously operating for three months, during this test, the dust accumulation amount on its surface increases significantly (weight change a 长运 )). While the surface hardness of the impeller prepared in the example of the present application is high, and the dust accumulation amount on its surface does not increase significantly during this test (weight change b长运 ). Therefore, the long-term dust prevention rate of the embodiment will be higher than the initial dust prevention rate.

[0108] It can be seen that after three months of use, the hardness and dust prevention rate of the wind wheel coating of the embodiment of the present application are still significantly greater than those of comparative example 1, indicating that the dust prevention coating formed by the dust prevention paint of the embodiment of the present application not only has a good dust prevention effect, but also can maintain a good dust prevention effect for a long time, and the dust prevention effect is highly long-lasting.

[0109] In addition, the dust-proof coating formed by the dust-proof paint in the embodiment of the present application has a higher hardness, so the coating has better wear resistance, and the long-term effectiveness of the dust-proof effect also indirectly illustrates the better wear resistance of the coating.

[0110] Although the embodiments disclosed in this application are as above, the contents described are only embodiments adopted to facilitate understanding of this application and are not intended to limit this application. Any technician in the field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be based on the scope defined in the attached claims.

Claims

1. A dust-proof coating, It is characterized in that The invention comprises, by weight, 100 parts of resin, 5 to 20 parts of diluent, 0 to 3 parts of silane coupling agent, at least 10 parts of nano zirconium dioxide and 8 to 50 parts of curing agent.

2. The dust-proof coating according to claim 1, It is characterized in that The nano zirconium dioxide is present in an amount of 10 to 60 parts.

3. The dust-proof coating according to claim 2, It is characterized in that The composition comprises, by weight, 100 parts of resin, 5 to 10 parts of diluent, 1 to 2 parts of silane coupling agent, 50 to 60 parts of nano zirconium dioxide and 20 to 25 parts of curing agent.

4. The dust-proof coating according to any one of claims 1 to 3, It is characterized in that The surface pencil hardness of the coating after curing is above 1H.

5. The dust-proof coating according to claim 4, It is characterized in that The resin is selected from any one or more of epoxy resin, acrylate, polyurethane and silicone resin.

6. The dust-proof coating according to claim 5, It is characterized in that The epoxy resin is bisphenol A type epoxy resin.

7. The dust-proof coating according to any one of claims 1 to 3, It is characterized in that The curing agent is selected from any one or more of aliphatic amine curing agents, alicyclic amine curing agents, aromatic amine curing agents and polyamide curing agents.

8. The dust-proof coating according to any one of claims 1 to 3, It is characterized in that The diluent is selected from any one or more of ethyl acetate, acetone, isopropanol, xylene and butyl acetate.

9. A dust prevention method, It is characterized in that include: The dust-proof coating material according to any one of claims 1 to 8 is used to form a dust-proof coating on a substrate having dust-proof requirements.

10. An air duct, It is characterized in that A dust-proof coating is included, wherein the dust-proof coating includes the dust-proof paint according to any one of claims 1 to 8.

11. The air duct according to claim 10, It is characterized in that The thickness of the dustproof coating is 5 μm to 30 μm.

12. A wind wheel, It is characterized in that A dust-proof coating is included, wherein the dust-proof coating includes the dust-proof paint according to any one of claims 1 to 8.

13. The wind wheel according to claim 12, It is characterized in that The thickness of the dustproof coating is 5 μm to 30 μm.

14. An air conditioner, It is characterized in that Includes at least one of the following components: The air duct according to claim 10 or 11; A wind wheel according to claim 12 or 13.