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 the following components by weight: 100 parts of resin, 5-20 parts of a diluent, 0-2 parts of a silane coupling agent, at least 10 parts of a hardness enhancer and 3-10 parts of a photoinitiator; wherein the hardness enhancer comprises nano zirconium oxide and nano silicon carbide. The dustproof coating provided by the embodiment of the invention can form a dustproof coating with high hardness, good wear resistance 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 conditioner technology, and specifically relate to dust-proof coatings and methods, air ducts, air wheels, and air conditioners. Background Art

[0002] Currently, the commonly used substrate for the air wheel of air conditioner products is glass fiber reinforced resin, and dust is likely to accumulate and adhere to the air wheel. To reduce the amount of dust adhering to the air wheel of the air conditioner during use, a method of setting a dust-proof coating on the surface of the air wheel can be adopted. Currently, the dust-proof coatings used to form the dust-proof coating mainly include antistatic coatings and low surface energy coatings. The antistatic coating reduces static electricity by adding an antistatic agent to achieve the purpose of reducing dust adsorption, but when the relative humidity is relatively high, the antistatic effect is likely to fail. The low surface energy coatings include fluorocarbon coatings, UV-curable fluorocarbon coatings, silicone coatings, etc. Mainly, surface chemical modification of the coating is carried out with modifiers such as fluorine-containing materials to endow the coating with low surface energy characteristics, reduce the adhesion force to dust, and achieve the purpose of reducing dust adsorption. However, the modifier is likely to precipitate and be consumed in the use environment, resulting in a relatively low long-term effectiveness of the dust-proof effect. In addition, the dust-proof coating rubs against the air for a long time, and the surface is easily worn, which also reduces the long-term effectiveness of the dust-proof 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 the present application.

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

[0005] The embodiments of the present application provide a dust-proof coating. By weight, the dust-proof coating includes: 100 parts of resin, 5 parts to 20 parts of diluent, 0 part to 2 parts of silane coupling agent, at least 10 parts of hardness enhancer, and 3 parts to 10 parts of photoinitiator;

[0006] Wherein, the hardness enhancer includes nano zirconia and nano silicon carbide.

[0007] In the embodiments of the present application, the hardness enhancer is 10 parts to 50 parts.

[0008] In the embodiments of the present application, the weight ratio of the nano zirconia to the nano silicon carbide is 1:(0.8 to 1.2).

[0009] In the embodiments of the present application, the average particle size of the nano zirconia is 10 nm to 30 nm, and the average particle size of the nano silicon carbide is 100 nm to 300 nm.

[0010] In an embodiment of the present application, by weight, the dust-proof coating comprises: 100 parts of resin, 5 to 10 parts of diluent, 0.5 to 2 parts of silane coupling agent, 40 to 50 parts of hardness enhancer, and 5 to 10 parts of photoinitiator.

[0011] In an embodiment of the present application, the surface pencil hardness of the cured coating is above 2H.

[0012] In an embodiment of the present application, the resin is selected from any one or more of epoxy resin, acrylate, polyurethane, and silicone resin.

[0013] In an embodiment of the present application, the epoxy resin is bisphenol A epoxy resin.

[0014] In an embodiment of the present application, the photoinitiator is a hexafluoroantimonate-based photoinitiator.

[0015] In an embodiment of the present application, the diluent is an epoxy resin diluent.

[0016] The embodiment of the present application also provides a dust-proof method, which includes: applying the dust-proof coating provided by the embodiment of the present application on a substrate with dust-proof requirements to form a dust-proof coating.

[0017] The embodiment of the present application also provides an air duct, which includes a dust-proof coating, and the dust-proof coating comprises the dust-proof coating provided by the embodiment of the present application.

[0018] In an embodiment of the air duct of the present application, the thickness of the dust-proof coating in the air duct is 10 μm to 20 μm.

[0019] The embodiment of the present application also provides a wind wheel, which includes a dust-proof coating, and the dust-proof coating comprises the dust-proof coating provided by the embodiment of the present application.

[0020] In an embodiment of the wind wheel of the present application, the thickness of the dust-proof coating in the wind wheel is 10 μm to 20 μm.

[0021] 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 by the embodiment of the present application.

[0022] The dust-proof coating of the embodiment of the present application can obtain a coating with a higher hardness by introducing a nano hardness enhancer. Moreover, the inventors of the present application found that the hardness of the coating is related to the dust-proof effect. A higher hardness is beneficial to reducing the adhesion and adsorption of dust to the coating and reducing the electrostatic effect, thereby obtaining a better dust-proof effect. 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 has a high long-term effectiveness of the dust-proof effect and good wear resistance of the coating.

[0023] Other features and advantages of the present application will be described in the subsequent specification, and in part, will become more apparent from the specification, or will be understood by implementing the present application. Other advantages of the present application can be achieved and obtained through the solutions described in the specification. Detailed Embodiments

[0024] To make the objectives, technical solutions, and advantages of the present application clearer and more understandable, the embodiments of the present application will be described in detail below. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0025] The inventors of the present application have found that the hardness of the coating is related to the dust-proof effect. A higher hardness is beneficial to reducing the adhesion and adsorption of dust to the coating, reducing the electrostatic effect, and thus obtaining a better dust-proof effect; a higher hardness can also improve the wear resistance and long-term dust-proof effect of the coating.

[0026] Based on this, the embodiments of the present application provide a dust-proof coating, and the dust-proof coating includes a resin, a diluent, a hardness enhancer, and a photoinitiator.

[0027] In the embodiments of the present application, by weight, the dust-proof coating may include: 100 parts of resin, 5 to 20 parts of diluent, 0 to 2 parts of silane coupling agent, at least 10 parts of hardness enhancer, and 3 to 10 parts of photoinitiator;

[0028] Wherein, the hardness enhancer includes nano-zirconia and nano-silicon carbide.

[0029] The dust-proof coating of the embodiments of the present application can obtain a coating with a higher hardness by introducing a nano-hardness enhancer. Moreover, the inventors of the present application have found that the hardness of the coating is related to the dust-proof effect. A higher hardness is beneficial to reducing the adhesion and adsorption of dust to the coating, reducing the electrostatic effect, and thus obtaining a better dust-proof effect. Therefore, the dust-proof coating of the embodiments of the present application can form a coating with high hardness and good dust-proof effect, and has a high long-term dust-proof effect and good wear resistance of the coating.

[0030] In the embodiments of the present application, by weight, the resin is 100 parts, and the hardness enhancer is at least 10 parts. For example, the hardness enhancer may be 10 to 50 parts. The addition of the hardness enhancer can improve the hardness of the dust-proof coating. When the addition amount of the hardness enhancer is in the range of 10 to 50 parts, it is beneficial to use less hardness enhancer to achieve a greater increase in the hardness of the dust-proof coating. For example, the hardness enhancer may be 10 parts, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, or 50 parts. For another example, the hardness enhancer may be 40 to 50 parts.

[0031] In the embodiments of the present application, by weight, the resin is 100 parts, and the diluent can be 5 parts to 20 parts. When the diluent is 5 parts to 20 parts, the dust-proof coating can have a suitable curing time and high 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 parts to 10 parts.

[0032] In the embodiments of the present application, by weight, the resin is 100 parts, and the silane coupling agent can be 0 parts to 2 parts. The silane coupling agent can improve the adhesion between the hardness enhancer and the resin. When the silane coupling agent is 0 parts to 2 parts, the hardness enhancer and the resin can have a suitable adhesion, which is beneficial to improving the hardness of the dust-proof coating. For example, the silane coupling agent can be 0 parts, 0.5 parts, 1 part, 1.5 parts or 2 parts; for another example, the silane coupling agent can be 0.5 parts to 2 parts.

[0033] In the embodiments of the present application, by weight, the resin is 100 parts, and the photoinitiator can be 3 parts to 10 parts. The photoinitiator can initiate the crosslinking and curing of liquid resins such as epoxy resins. When the addition amount of the photoinitiator is 3 parts to 10 parts, the liquid resin can be fully cured, thereby effectively improving the hardness of the coating.

[0034] In the embodiments of the present application, the hardness enhancer can be a mixture of the nano-zirconia and the nano-silicon carbide.

[0035] In the embodiments of the present application, by weight, the dust-proof coating includes: 100 parts of resin, 5 parts to 10 parts of diluent, 0.5 parts to 2 parts of silane coupling agent, 40 parts to 50 parts of hardness enhancer, and 5 parts to 10 parts of photoinitiator.

[0036] In the embodiments of the present application, by weight, the dust-proof coating can be composed of 100 parts of resin, 5 parts to 20 parts of diluent, 0 parts to 2 parts of silane coupling agent, 10 parts to 50 parts of hardness enhancer, and 3 parts to 10 parts of photoinitiator;

[0037] wherein, the hardness enhancer includes nano-zirconia and nano-silicon carbide.

[0038] In the embodiments of the present application, by weight, the dust-proof coating can include: 100 parts of resin, 5 parts to 10 parts of diluent, 0.5 parts to 2 parts of silane coupling agent, 40 parts to 50 parts of hardness enhancer, and 5 parts to 10 parts of photoinitiator.

[0039] In the embodiments of the present application, by weight, the dust-proof coating can be composed of 100 parts of resin, 5 parts to 10 parts of diluent, 0.5 parts to 2 parts of silane coupling agent, 40 parts to 50 parts of hardness enhancer, and 5 parts to 10 parts of photoinitiator.

[0040] In an embodiment of the present application, the weight ratio of the nano-zirconia to the nano-silicon carbide may be 1:(0.8 to 1.2). For example, it may be 1:0.8, 1:0.9, 1:1, 1:1.1, or 1:1.2.

[0041] In an embodiment of the present application, the average particle size of the nano-zirconia is different from that of the nano-silicon carbide. For example, the average particle size of the nano-zirconia may be in the range of 10 nm to 30 nm, and the average particle size of the nano-silicon carbide may be in the range of 100 nm to 300 nm.

[0042] In an embodiment of the present application, the surface pencil hardness of the cured coating may be above 2H.

[0043] The resin may be selected from any one or more of epoxy resin, acrylate, polyurethane, and silicone resin.

[0044] In an embodiment of the present application, the resin may be epoxy resin. For example, it may be bisphenol A type epoxy resin. The bisphenol A type epoxy resin contains benzene rings, which is beneficial to obtaining a dust-proof coating with higher hardness.

[0045] In an embodiment of the present application, the bisphenol A type epoxy resin may be selected from any one or two of E51 and E44. When any one or two of E51 and E44 are used as the bisphenol A type epoxy resin, the obtained dust-proof coating has high adhesive strength and strong corrosion resistance.

[0046] In an embodiment of the present application, the photoinitiator may be a hexafluoroantimonate type photoinitiator. For example, it may be triarylsulfonium hexafluoroantimonate, and for another example, it may be Chivacure 1176.

[0047] In an embodiment of the present application, the diluent may be an epoxy resin diluent. For example, it may be epoxy propane butyl ether; for another example, it may be epoxy propane butyl ether 660A.

[0048] In an embodiment of the present application, the silane coupling agent may include any one or more of KH550 and KH560.

[0049] In an embodiment of the present application, by weight, the dust-proof coating may include: 100 parts of resin, 5 parts to 20 parts of diluent, 0 parts to 2 parts of silane coupling agent, at least 10 parts of hardness enhancer, and 3 parts to 10 parts of photoinitiator;

[0050] wherein, the hardness enhancer includes nano-zirconia and nano-silicon carbide;

[0051] The resin may be epoxy resin;

[0052] The photoinitiator can be triarylsulfonium hexafluoroantimonate;

[0053] The diluent can be an epoxy resin diluent.

[0054] In the embodiments of the present application, by weight, the dust-proof coating may include: 100 parts of resin, 5 to 20 parts of diluent, 0 to 2 parts of silane coupling agent, at least 10 parts of hardness enhancer, and 3 to 10 parts of photoinitiator;

[0055] Among them, the hardness enhancer includes nano-zirconia and nano-silicon carbide;

[0056] The resin can be bisphenol A epoxy resin;

[0057] The photoinitiator is triarylsulfonium hexafluoroantimonate;

[0058] The diluent can be propylene oxide butyl ether;

[0059] The silane coupling agent is selected from any one or more of KH550 and KH560.

[0060] It should be understood that the resin, diluent, photoinitiator, and silane coupling agent used in the dust-proof coating are not limited to the specific materials listed above. Any material that can achieve the functions of various reagents can be used in the preparation of the dust-proof coating in the embodiments of the present application. The specific materials listed above do not impose any formal or substantial limitations on the present application.

[0061] In the embodiments of the present application, the dust-proof coating may further include other additives. For example, the dust-proof coating may include any one or more of defoamers, dispersants, leveling agents, surface tension additives, antibacterial agents, and antioxidants.

[0062] In the embodiments of the present application, by weight, the resin is 100 parts, and the total addition amount of the other additives can be 0 to 1 part. For example, it can be 0 part, 0.5 part, or 1 part.

[0063] 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.

[0064] The embodiment of the present application also provides a dustproof method, which comprises: applying a dustproof coating on a substrate with dustproof requirements using the dustproof coating provided in the embodiment of the present application. For example, the dustproof coating can be applied (e.g., sprayed, scraped, rolled, etc.) or deposited on a substrate to form a dustproof coating on the substrate.

[0065] 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.

[0066] The embodiment of the present application further provides an air duct, the air duct 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 air duct in contact with the fluid.

[0067] In the embodiment of the air duct of the present application, the thickness of the dustproof coating in the air duct may be 10 μm to 20 μm, for example, 10 μm, 12 μm, 14 μm, 16 μm, 18 μm or 20 μm.

[0068] The embodiment of the present application further provides a wind wheel, the wind wheel comprises a dustproof coating, the dustproof coating comprises 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.

[0069] In an embodiment of the wind wheel of the present application, the thickness of the dustproof coating in the wind wheel is 10 μm to 20 μm, for example, may be 10 μm, 12 μm, 14 μm, 16 μm, 18 μm or 20 μm.

[0070] In an embodiment of the present application, the wind wheel may be a cross-flow wind wheel or a centrifugal wind wheel for air conditioning.

[0071] 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.

[0072] In the following different examples and comparative examples, the zirconia and silicon carbide used are products of the same batch produced by the same manufacturer. The average particle size of zirconia is in the range of 10 nm to 30 nm, and the average particle size of silicon carbide is in the range of 100 nm to 300 nm.

[0073] Example 1

[0074] Weigh 100 parts by weight of epoxy resin E51, 10 parts by weight of reactive diluent 660A, 5 parts by weight of photoinitiator Chivacure1176, 10 parts by weight of nano-hardness enhancer, and 1 part by weight of silane coupling agent KH550, and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the wind wheel with a thickness of 20 μm. Among them, in the nano-hardness enhancer, the weight ratio of zirconia to silicon carbide is 1:1.

[0075] Example 2

[0076] Weigh 100 parts by weight of epoxy resin E44, 8 parts by weight of reactive diluent 660A, 5 parts by weight of photoinitiator Chivacure1176, 30 parts by weight of nano-hardness enhancer, 1 part by weight of silane coupling agent KH560, and 0.5 part by weight of defoaming agent polyoxyethylene polyoxypropylene amine ether (BAPE), and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the wind wheel with a thickness of 20 μm. Among them, in the nano-hardness enhancer, the weight ratio of zirconia to silicon carbide is 1:0.8.

[0077] Example 3

[0078] Weigh 100 parts by weight of epoxy resin E51, 10 parts by weight of reactive diluent 660A, 8 parts by weight of photoinitiator Chivacure1176, 40 parts by weight of nano-hardness enhancer, and 1 part by weight of silane coupling agent KH550, and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the wind wheel with a thickness of 18 μm. Among them, in the nano-hardness enhancer, the weight ratio of zirconia to silicon carbide is 1:1.2.

[0079] Example 4

[0080] Weigh 100 parts by weight of epoxy resin E51, 10 parts by weight of reactive diluent 660A, 10 parts by weight of photoinitiator Chivacure1176, 20 parts by weight of nano-hardness enhancer, and 1 part by weight of silane coupling agent KH550, and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the wind wheel with a thickness of 15 μm. Among them, in the nano-hardness enhancer, the weight ratio of zirconia to silicon carbide is 1:1.

[0081] Example 5

[0082] Weigh 100 parts by weight of epoxy resin E51, 12 parts by weight of reactive diluent 660A, 5 parts by weight of photoinitiator Chivacure 1176, 50 parts by weight of nano hardness enhancer, 1 part by weight of silane coupling agent KH560, and 1 part by weight of leveling agent BYK-333, and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the wind wheel with a thickness of 20 μm. Among them, in the nano hardness enhancer, the weight ratio of zirconia to silicon carbide is 1:1.

[0083] Example 6

[0084] Weigh 100 parts by weight of epoxy resin E51, 12 parts by weight of reactive diluent 660A, 5 parts by weight of photoinitiator Chivacure 1176, 50 parts by weight of nano hardness enhancer, 1 part by weight of silane coupling agent KH550, and 1 part by weight of leveling agent BYK-333, and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the wind wheel with a thickness of 20 μm. Among them, in the nano hardness enhancer, the weight ratio of zirconia to silicon carbide is 1:0.8.

[0085] Example 7

[0086] Weigh 100 parts by weight of epoxy resin E51, 12 parts by weight of reactive diluent 660A, 5 parts by weight of photoinitiator Chivacure 1176, 50 parts by weight of nano hardness enhancer, 1 part by weight of silane coupling agent KH550, and 1 part by weight of leveling agent BYK-333, and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the wind wheel with a thickness of 20 μm. Among them, in the nano hardness enhancer, the weight ratio of zirconia to silicon carbide is 1:1.2.

[0087] Example 8

[0088] Weigh 100 parts by weight of epoxy resin E51, 12 parts by weight of reactive diluent 660A, 5 parts by weight of photoinitiator Chivacure 1176, 10 parts by weight of nano hardness enhancer, 1 part by weight of silane coupling agent KH550, and 1 part by weight of leveling agent BYK-333, and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the wind wheel with a thickness of 20 μm. Among them, in the nano hardness enhancer, the weight ratio of zirconia to silicon carbide is 1:0.6.

[0089] Example 9

[0090] Weigh 100 parts by weight of epoxy resin E51, 12 parts by weight of reactive diluent 660A, 5 parts by weight of photoinitiator Chivacure 1176, 10 parts by weight of nano hardness enhancer, 1 part by weight of silane coupling agent KH550, and 1 part by weight of leveling agent BYK-333, and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the impeller with a thickness of 20 μm. Among them, in the nano hardness enhancer, the weight ratio of zirconia to silicon carbide is 0.6:1.

[0091] Comparative Example 1

[0092] The difference between this comparative example and Example 1 is only that: the nano hardness enhancer is not added.

[0093] Comparative Example 2

[0094] Weigh 100 parts by weight of epoxy resin E51, 12 parts by weight of reactive diluent 660A, 5 parts by weight of photoinitiator Chivacure 1176, 10 parts by weight of nano hardness enhancer, 1 part by weight of silane coupling agent KH550, and 1 part by weight of leveling agent BYK-333, and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the impeller with a thickness of 20 μm. Among them, the nano hardness enhancer is all zirconia.

[0095] Comparative Example 3

[0096] Weigh 100 parts by weight of epoxy resin E51, 12 parts by weight of reactive diluent 660A, 5 parts by weight of photoinitiator Chivacure 1176, 10 parts by weight of nano hardness enhancer, 1 part by weight of silane coupling agent KH550, and 1 part by weight of leveling agent BYK-333, and stir evenly to obtain a dust-proof coating. Coat the dust-proof coating on the surface of the impeller with a thickness of 20 μm. Among them, the nano hardness enhancer is all silicon carbide.

[0097] Performance Test

[0098] Hardness test: The surface pencil hardness of the cured coating is tested according to the method of Chinese national standard GB / T 6739-2006.

[0099] Initial Dust-proof Rate Test

[0100] Anti-dust accumulation test: Use ASHRAE artificial dust. Put the impeller in a closed box, and put 1 g of artificial dust after starting. The running state of the impeller is to rotate for 16 h and then stop for 8 h. After 3 cycles for a total of 72 h, take out the impeller, and obtain the surface dust accumulation amount by observing the dust accumulation condition on the surface of the sample before and after operation and testing the mass change of the sample piece before and after operation. Through the test, obtain the surface dust accumulation amount of Comparative Example 1, and take Comparative Example 1 as a reference to calculate the reduction rate of the dust accumulation amount of the samples in the examples and other comparative examples.

[0101] Taking the weight change of Comparative Example 1 as a and the weight changes of the samples of the Examples and Comparative Examples 2-3 as b, the dust-proof rate x is calculated as: x = (a - b) / a × 100%. The test results of the pencil hardness and the initial dust-proof rate of the coating surface are shown in Table 1.

[0102] Table 1 Initial hardness and dust-proof rate

[0103]

[0104] It can be seen that compared with the coating formed by the dust-proof coating without adding the nano-hardness enhancer, the coating formed by the dust-proof coating adding the nano-hardness enhancer in the Examples 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. Furthermore, when the addition amount of the nano-hardness enhancer is in the range of 10 to 50 parts by weight, with the increase of the addition amount of the nano-hardness enhancer, the hardness and the dust-proof rate of the coating generally show an upward trend.

[0105] By comparing Examples 5 to 7, Example 1 with Examples 8 and 9, it can be seen that when the addition amount of the nano-hardness enhancer is the same, the weight ratio of zirconia to silicon carbide also has a certain influence on the hardness and the dust-proof rate of the coating. This is because the small-particle nano-zirconia will fill the gaps between the large-particle nano-silicon carbide, and choosing a suitable ratio of zirconia to silicon carbide is beneficial to achieve the tight filling of the gaps between the nano-zirconia and the nano-silicon carbide.

[0106] By comparing Example 1 with Comparative Examples 2 and 3, it can be seen that the combined use of zirconia and silicon carbide in the Examples of the present application can significantly improve the dust-proof rate. The dust-proof rate of Example 1 is nearly doubled compared with that of Comparative Examples 2-3, indicating that the combined use of zirconia and silicon carbide with different particle sizes in the Examples of the present application has a synergistic effect in improving the dust-proof rate.

[0107] Long-term dust-proof rate test

[0108] Let the wind wheel run continuously in dry air for three months. Before the long-term dust-proof rate test, first clean the dust on the surface of the wind wheel, and then use the same method as the initial dust-proof rate test for testing. The test results are shown in Table 2.

[0109] Table 2 Long-term hardness and dust-proof rate

[0110]

[0111]

[0112] After continuous operation for three months, the surface dust-proof rate test is carried out again. Since the coating of the wind wheel in Comparative Example 1 is worn on the surface after continuous operation for three months, the dust accumulation amount on its surface increases significantly during this test (weight change a 长运 ). The surface hardness of the wind wheel prepared in the embodiment 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-proof rate of the coating in the embodiment will be higher than the initial dust-proof rate.

[0113] It can be seen that after three months of use, the hardness and dust-proof rate of the wind wheel coating in the embodiment of the present application are still significantly greater than those in Comparative Example 1, indicating that the dust-proof coating formed by the dust-proof coating in the embodiment of the present application not only has a good dust-proof effect, but also can maintain a good dust-proof effect for a long time, and the long-term effectiveness of the dust-proof effect is high.

[0114] In addition, the dust-proof coating formed by the dust-proof coating in the embodiment of the present application has a high hardness, so the wear resistance of the coating is good, and the high long-term effectiveness of the dust-proof effect also shows from the side that the wear resistance of the coating is good.

[0115] Although the embodiments disclosed in the present application are as above, the content described is only the embodiments adopted for the convenience of understanding the present application, and is not used to limit the present application. Any person skilled in the art within the scope of the present application can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present application. However, the scope of patent protection of the present application shall still be subject to the scope defined by the appended claims.

Claims

1. A dust-proof coating, characterized in that, By weight, it includes: 100 parts of resin, 5 to 20 parts of diluent, 0 to 2 parts of silane coupling agent, at least 10 parts of hardness enhancer, and 3 to 10 parts of photoinitiator; Among them, the hardness enhancer includes nano-zirconia and nano-silicon carbide.

2. The dust-proof coating according to claim 1, characterized in that, The hardness enhancer is 10 to 50 parts.

3. The dust-proof coating according to claim 2, wherein The weight ratio of the nano-zirconia to the nano-silicon carbide is 1:(0.8 to 1.2).

4. The dust-proof coating according to claim 3, characterized in that, The average particle size of the nano-zirconia is 10 nm to 30 nm, and the average particle size of the nano-silicon carbide is 100 nm to 300 nm.

5. The dust-proof coating according to claim 3, characterized in that, By weight, it includes: 100 parts of resin, 5 to 10 parts of diluent, 0.5 to 2 parts of silane coupling agent, 40 to 50 parts of hardness enhancer, and 5 to 10 parts of photoinitiator.

6. The dust-proof coating according to any one of claims 1 to 5, characterized in that, The surface pencil hardness of the cured coating is above 2H.

7. The dust-proof coating according to claim 6, characterized in that, The resin is selected from any one or more of epoxy resin, acrylate, polyurethane, and silicone resin.

8. The dust-proof coating according to claim 7, wherein The epoxy resin is bisphenol A type epoxy resin.

9. The dust-proof coating according to any one of claims 1 to 5, characterized in that The photoinitiator is a hexafluoroantimonate type photoinitiator.

10. The dust-proof coating according to any one of claims 1 to 5, characterized in that, The diluent is an epoxy resin diluent.

11. A dust prevention method, characterized in that, It includes: A dust-proof coating is formed on a substrate with dust-proof requirements by using the dust-proof coating according to any one of claims 1 to 10.

12. An air duct, characterized in that, It includes a dust-proof coating, and the dust-proof coating includes the dust-proof coating according to any one of claims 1 to 10.

13. The air duct according to claim 12, wherein The thickness of the dust-proof coating is 10 μm to 20 μm.

14. A wind wheel, characterized in that, It includes a dust-proof coating, and the dust-proof coating includes the dust-proof coating according to any one of claims 1 to 10.

15. The wind wheel according to claim 14, characterized in that, The thickness of the dust-proof coating is 10 μm to 20 μm.

16. An air conditioner, characterized in that, It includes at least one of the following components: The air duct according to claim 12 or 13; The wind wheel according to claim 14 or 15.

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