Water-based high-performance matte UV coating and preparation method thereof

Abstract

The invention discloses a water-based high-performance matte UV (ultraviolet) coating. The water-based UV matte paint comprises the following raw materials in parts by weight: 50-70 parts of water-based UV resin A, 10-20 parts of water-based UV resin B, 0.5-1.5 parts of a water-based wetting auxiliary agent, 0.2-1 part of a water-based wetting defoaming agent, 0.2-1 part of a water-based wetting dispersing agent, 1-3 parts of a water-based photoinitiator 1, 2-6 parts of a cosolvent, 0.5-1.5 parts of a photoinitiator 2, 2-6 parts of a water-based thickening agent 1, 0.1-1 part of a water-based thickening agent 2, 3-10 parts of deionized water and 3-5 parts of matte powder. 0.2-1 part of a weather-proof auxiliary agent; all the components are mixed according to a certain sequence to prepare the water-based high-performance matte UV coating. The coating disclosed by the invention has the advantages of wide and good chemical resistance, high hardness and good high-temperature and high-humidity resistance, and meanwhile, the stability of the basic performance of the coating can be ensured.

Description

Technical Field

[0001] This invention relates to the field of ultraviolet curable coating technology, and in particular to the preparation and application of a high-performance matte UV coating. Background Technology

[0002] Waterborne UV coatings have long been criticized for their inferior performance compared to solvent-based UV coatings. However, in recent years, with continuous improvements in their performance, waterborne UV coatings have gradually gained recognition in more fields, such as the 3C market, home appliance market, furniture market, and automotive market.

[0003] Waterborne UV coatings are environmentally friendly, safe, healthy, high-performance, and low-energy-consumption coatings, and their advantages are becoming increasingly apparent. Currently, high-performance matte UV coatings used in 3C products are mainly oil-based, with fewer waterborne high-performance matte UV coatings on the market. Previously, the performance of waterborne coatings was generally inferior to that of oil-based coatings, especially high-performance matte UV coatings. These coatings must not only ensure resistance to chemicals without significant corrosion marks, but also meet the requirements for resistance to various types of chemicals, while also possessing high hardness, good resistance to high temperatures and humidity, and weather resistance. Furthermore, they need to maintain a relatively uniform, delicate, and smooth film appearance. This undoubtedly presents a significant challenge for development, but it is a strong market demand for high performance in environmentally friendly high-end products. This has become a key focus for leading companies in the industry in the development of waterborne UV coatings. In terms of the application market, both domestically and internationally, there are some ordinary water-based matte UV coatings with relatively average overall performance. High-performance water-based matte UV coatings are still in the research and development and small-batch trial production stages. Only a handful of manufacturers can provide high-performance water-based matte UV coatings, and currently, no manufacturer has launched mass-produced products in the 3C (computer, communication, and consumer electronics) field. With the accelerating pace of global market changes, the continuous development of big data and AI, and the continuous improvement of people's living standards, their reliance on technology is gradually increasing, and their demands for quality of life are rising. People increasingly expect the products and experiences they receive to be top-notch, environmentally friendly, and healthy and sustainable. High-performance water-based matte UV coatings provide high-performance solutions for high-end products, meeting the needs of social development and people's growing pursuit of a better life. With the improvement of environmental legislation in various countries and the intensification of competition among enterprises, the development and application of environmentally friendly and high-performance coating products will gain widespread social recognition and have a bright future. Summary of the Invention

[0004] To address the aforementioned problems in existing technologies, this invention provides a method for preparing and applying a water-based high-performance matte UV coating. The product of this invention possesses advantages such as broad and excellent chemical resistance, high hardness, high temperature and humidity resistance, and good weather resistance, while ensuring the stability of the coating's basic properties.

[0005] The technical solution of the present invention is as follows: The first objective of this invention is to provide a water-based high-performance matte UV coating, wherein the raw materials contained in the matte UV coating and the weight parts of each raw material are as follows: Waterborne UV Resin A 50-70 parts Waterborne UV Resin B 10-20 parts 0.5-1.5 parts of water-based wetting agent 0.2-1 part of water-based wetting defoamer 0.2-1 part of water-based wetting and dispersing agent Aqueous photoinitiator-1 1-3 parts 2-6 parts of cosolvent Aqueous photoinitiator-2 0.5-1.5 parts Water-based thickener - 1 2-6 parts Water-based thickener - 2 0.1-1 parts 3-10 parts deionized water 3-5 parts of matte powder Weather-resistant additive 0.2-1 part In one embodiment of the present invention, the waterborne UV resin A is RUW-1015A from Shenzhen Ruisheng New Materials Co., Ltd.; and the waterborne UV resin B is DR-W486 from Changxing Materials Industry Co., Ltd.

[0006] In one embodiment of the present invention, the aqueous wetting agent is Tego 4100; the aqueous wetting defoamer is BYK-024; and the aqueous wetting dispersant is Disperbyk-190.

[0007] In one embodiment of the present invention, the aqueous photoinitiator-1 is 1-hydroxycyclohexylphenyl ketone; the cosolvent is ethylene glycol butyl ether; and the aqueous photoinitiator-2 is ethyl 2,4,6,-trimethylbenzoylphenylphosphonate.

[0008] In one embodiment of the present invention, the aqueous thickener-1 is composed of 10 wt% BYK-Laponite RDS and 90 wt% deionized water; the aqueous thickener-2 is ELEMENTIS-RHEOLATE 299.

[0009] In one embodiment of the present invention, the conductivity of the deionized water is <5 μS / cm.

[0010] In one embodiment of the present invention, the matting powder is Tosoh-E-1011.

[0011] In one embodiment of the present invention, the weather-resistant additive is Ciba Tinuvin292.

[0012] The second objective of this invention is to provide a method for preparing the aforementioned water-based high-performance matte UV coating, comprising the following steps: each raw material is present in parts by weight; (1) Mix 50-70 parts of waterborne UV resin A and 10-20 parts of waterborne UV resin B, and stir at a speed of 300-500 rpm. Then add 0.5-1.5 parts of waterborne wetting agent, 0.2-1 parts of waterborne wetting defoamer, and 0.2-1 parts of waterborne dispersant in sequence, and continue stirring for 3-5 minutes until the mixture is uniform. (2) Mix 1-3 parts of photoinitiator-1 and 2-6 parts of cosolvent in proportion, stir until clear, filter through 300 mesh and add to (1), stir until even, add 0.5-1.5 parts of photoinitiator-2, 2-6 parts of water-based thickener-1 and 0.1-1 parts of water-based thickener-2 in sequence, stir at a stirring speed of 600-800 rpm for 10-15 mins, then add 3-10 parts of deionized water, stir at a stirring speed of 400-600 rpm for 3-5 mins until evenly mixed to obtain an intermediate mixture; (3) Add 3-5 parts of the matte powder slowly to the mixture in step (2) while stirring, and stir at a stirring speed of 800-1000 rpm for 25-30 mins until the fineness is less than 20 μm; (4) Add 0.2-1 parts of weather-resistant additive to the mixture in step (3), and stir at a stirring speed of 400-600 rpm for 5-10 mins until the mixture is uniform, to obtain the water-based high-performance matte UV coating.

[0013] In one embodiment of the present invention, in steps (1), (2), (3), and (4), the standard for uniform mixing is a detection fineness of less than 20 μm.

[0014] The beneficial technical effects of this invention are as follows: The waterborne UV resin A used in this invention has high functionality, and the waterborne UV resin B has strong hydrogen bonds. By compounding the two resins within the above-mentioned ratio range, they can gain energy and react rapidly with the waterborne photoinitiator under ultraviolet light irradiation, forming a highly cross-linked spatial network structure. This creative combination in a specific ratio provides the UV coating with high hardness, broad and good chemical resistance, resulting in a relatively balanced resistance to different types of chemicals. At the same time, it balances chemical resistance and adhesion under high temperature and humidity, ultimately obtaining a waterborne matte UV coating with high hardness, good resistance to high temperature and humidity, and excellent overall chemical resistance.

[0015] The photoinitiators used in this invention are 1-hydroxycyclohexylphenyl ketone and ethyl 2,4,6'-trimethylbenzoylphenylphosphonate. Only when the two are used in combination within the above-mentioned ratio range can a high synergistic effect be produced, so that the UV surface curing and deep curing can be achieved at the same time, forming a higher crosslinking density and obtaining high-performance coating film functions such as higher hardness and chemical resistance.

[0016] The water-based wetting agent used in this invention, due to its unique organosilicon chemical structure, can reduce the surface tension of the coating in the wet film state. Only when it is combined with two compounded resins within the above-mentioned ratio range can the UV coating better wet the substrate and spread into a smoother paint film, forming a paint film with a good leveling effect.

[0017] The wetting and defoaming agent used in this invention can break the bubbles generated during stirring through the action of hydrophobic particles in its components, and can also agglomerate microbubbles into large bubbles and eliminate them during construction, thereby achieving a good defoaming effect. Similarly, only when it is creatively combined with the wetting aids in the above-mentioned proportions within the above-mentioned proportions can the defoaming ability and leveling performance be better balanced, eliminating pinholes and craters. It can promote better substrate wetting and leveling effects during the construction of this UV coating, resulting in a smoother and more delicate paint film surface.

[0018] The matting component used in this invention is silica with particularly fine texture, and the wetting and dispersing agent used is a modified styrene-maleic acid copolymer solution. Its HLB value matches the resin system and the surface characteristics of the matting powder. When the above-mentioned mixing ratio is followed, it can be ensured that the matting powder will not coarsen or settle, forming a stable and uniform dispersion, and a fine, smooth and uniform matte appearance effect can be obtained.

[0019] The weather-resistant additive used in this invention is a sebacic acid ester mixture light stabilizer. When used within the above-mentioned proportion range, it can effectively reduce the aging phenomenon of the UV coating under ultraviolet radiation, thus significantly improving the weather resistance of the matte UV coating.

[0020] The thickener used in this invention is a combination of two different types of thickeners in the above-mentioned proportions. One is a high-efficiency, low-to-medium shear polyether polyurethane thickener, which can promote efficient thickening of the coating system. When applied to this UV system, it can provide good anti-sagging effect and spray atomization, greatly improving the workability of the coating. The other is a shear-sensitive RDS, which makes the coating have better storage stability. Only when these two thickeners are combined in the above-mentioned proportions can they produce a synergistic effect, so that the UV coating can be balanced in terms of thickening effect, workability and storage stability, making it more stable.

[0021] The method for preparing the water-based high-performance matte UV coating of this invention is simple and easy to operate. It is rapidly cured by ultraviolet light, and the resulting coating exhibits excellent performance and superior appearance, fully meeting the requirements of large-scale industrial production. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the embodiments.

[0023] All raw materials used in the examples are commercially available. Waterborne UV resin A is RUW-1015A from Shenzhen Ruisheng New Materials Co., Ltd.; waterborne UV resin B is DR-W486 from Changxing Materials Industry Co., Ltd.; waterborne wetting agent is Tego 4100; waterborne wetting defoamer is BYK-024; waterborne wetting dispersant is Disperbyk-190; waterborne photoinitiator-1 is 1-hydroxycyclohexylphenyl ketone; cosolvent is ethylene glycol butyl ether; waterborne photoinitiator-2 is ethyl 2,4,6,-trimethylbenzoylphenylphosphonate; waterborne thickener-1 is composed of 10wt% BYK-Laponite RDS and 90wt% deionized water; waterborne thickener-2 is ELEMENTIS-RHEOLATE 299; the conductivity of deionized water is <5μS / cm; matting powder is Tosoh-E-1011; and weather-resistant additive is Ciba Tinuvin292.

[0024] Example 1 A method for preparing a water-based high-performance matte UV coating includes the following steps: (1) Mix 50 parts UVW RUW-1015A and 10 parts DR-W486 and stir at 400 rpm. Then add 0.9 parts Tego 4100, 0.4 parts BYK-024 and 0.2 parts Disperbyk-190 in sequence and continue stirring for 3~5 mins until the mixture is uniform. (2) Mix 2 parts of 1-hydroxycyclohexylphenyl ketone and 4 parts of ethylene glycol butyl ether in proportion, stir until clear, filter through 300 mesh and add to (1), stir until clear, add 1 part of 2,4,6'-trimethylbenzoylphenylphosphonic acid ethyl ester, 3.5 parts of water-based thickener-1, and 0.2 parts of water-based thickener-2 in sequence, stir at 700 rpm for 10-15 mins, then add 4 parts of deionized water, stir at 600 rpm for 3-5 mins until uniform (fineness less than 20 μm) to obtain intermediate mixture; (3) Add 4 parts of E-1011 slowly to the mixture in step (2) while stirring, and stir at 850 rpm for 25-30 mins until the fineness is less than 20 μm; (4) Add 0.5 parts of Ciba Tinuvin292 to the mixture in step (3) and stir at 500 rpm for 5-10 mins until the mixture is uniform (fineness less than 20 μm) to obtain the water-based high-performance matte UV coating.

[0025] Example 2 A method for preparing a water-based high-performance matte UV coating includes the following steps: (1) Mix 60 parts of RUW-1015A and 15 parts of DR-W486 and stir at 400 rpm. Then add 0.9 parts of Tego 4100, 0.4 parts of BYK-024 and 0.2 parts of Disperbyk-190 in sequence and continue stirring for 3~5 minutes until the mixture is uniform. (2) Mix 2.5 parts of 1-hydroxycyclohexylphenyl ketone and 5 parts of ethylene glycol butyl ether in proportion, stir until clear, filter through 300 mesh and add to (1), stir until even, add 1 part of 2,4,6'-trimethylbenzoylphenylphosphonic acid ethyl ester, 3.5 parts of water-based thickener-1, and 0.2 parts of water-based thickener-2 in sequence, stir at 700 rpm for 10-15 mins, then add 4 parts of deionized water, stir at 600 rpm for 3-5 mins until evenly mixed (fineness less than 20 μm) to obtain an intermediate mixture; (3) Add 4 parts of E-1011 slowly to the mixture in step (2) while stirring, and stir at 850 rpm for 25-30 mins until the fineness is less than 20 μm; (4) Add 0.5 parts of Ciba Tinuvin292 to the mixture in step (3) and stir at 500 rpm for 5-10 mins until the mixture is uniform (fineness less than 20 μm) to obtain the water-based high-performance matte UV coating.

[0026] Example 3 A method for preparing a water-based high-performance matte UV coating includes the following steps: (1) Mix 70 parts of RUW-1015A and 20 parts of DR-W486 and stir at 400 rpm. Then add 0.9 parts of Tego 4100, 0.4 parts of BYK-024 and 0.2 parts of Disperbyk-190 in sequence and continue stirring for 3~5 minutes until the mixture is uniform. (2) Mix 2.5 parts of 1-hydroxycyclohexylphenyl ketone and 5 parts of ethylene glycol butyl ether in proportion, stir until clear, filter through 300 mesh and add to (1), stir until even, add 1 part of 2,4,6'-trimethylbenzoylphenylphosphonic acid ethyl ester, 3.5 parts of water-based thickener-1, and 0.2 parts of water-based thickener-2 in sequence, stir at 700 rpm for 10-15 mins, then add 4 parts of deionized water, stir at 600 rpm for 3-5 mins until evenly mixed (fineness less than 20 μm) to obtain an intermediate mixture; (3) Add 4 parts of E-1011 slowly to the mixture in step (2) while stirring, and stir at 850 rpm for 25-30 mins until the fineness is less than 20 μm; (4) Add 0.5 parts of Ciba Tinuvin292 to the mixture in step (3) and stir at 500 rpm for 5-10 mins until the mixture is uniform (fineness less than 20 μm) to obtain the water-based high-performance matte UV coating.

[0027] Example 4 A method for preparing a water-based high-performance matte UV coating includes the following steps: (1) Mix 60 parts of RUW-1015A and 15 parts of DR-W486 and stir at 400 rpm. Then add 0.6 parts of Tego 4100, 0.2 parts of BYK-024 and 0.5 parts of Disperbyk-190 in sequence and continue stirring for 3~5 minutes until the mixture is uniform. (2) Mix 1.5 parts of 1-hydroxycyclohexylphenyl ketone and 3 parts of ethylene glycol butyl ether in proportion, stir until clear, filter through 300 mesh and add to (1), stir until even, add 0.8 parts of 2,4,6'-trimethylbenzoylphenylphosphonic acid ethyl ester, 4.5 parts of water-based thickener-1, and 0.4 parts of water-based thickener-2 in sequence, stir at 700 rpm for 10-15 mins, then add 4 parts of deionized water, stir at 600 rpm for 3-5 mins until evenly mixed (fineness less than 20 μm) to obtain an intermediate mixture; (3) Add 3 parts of E-1011 slowly to the mixture in step (2) while stirring, and stir at 850 rpm for 25-30 mins until the fineness is less than 20 μm; (4) Add 0.2 parts of Ciba Tinuvin292 to the mixture in step (3) and stir at 500 rpm for 5-10 mins until the mixture is uniform (fineness less than 20 μm) to obtain the water-based high-performance matte UV coating.

[0028] Example 5 A method for preparing a water-based high-performance matte UV coating includes the following steps: (1) Mix 60 parts of RUW-1015A and 15 parts of DR-W486 and stir at 400 rpm. Then add 1.2 parts of Tego 4100, 0.6 parts of BYK-024 and 0.8 parts of Disperbyk-190 in sequence and continue stirring for 3~5 minutes until the mixture is uniform. (2) Mix 3 parts of 1-hydroxycyclohexylphenyl ketone and 6 parts of ethylene glycol butyl ether in proportion, stir until clear, filter through 300 mesh and add to (1), stir until clear, add 1.2 parts of 2,4,6'-trimethylbenzoylphenylphosphonic acid ethyl ester, 2.5 parts of water-based thickener-1, and 0.1 parts of water-based thickener-2 in sequence, stir at 700 rpm for 10-15 mins, then add 4 parts of deionized water, stir at 600 rpm for 3-5 mins until uniform (fineness less than 20 μm) to obtain intermediate mixture; (3) Add 5 parts of E-1011 slowly to the mixture in step (2) while stirring, and stir at 850 rpm for 25-30 mins until the fineness is less than 20 μm; (4) Add 1 part of Ciba Tinuvin292 to the mixture in step (3) and stir at 500 rpm for 5-10 mins until the mixture is uniform (fineness less than 20 μm) to obtain the water-based high-performance matte UV coating.

[0029] Comparative Example 1 A method for preparing a water-based matte UV coating includes the following steps: (1) Mix 65 parts of RUW-1015A and 5 parts of DR-W486 and stir at 400 rpm. Then add 0.9 parts of Tego 4100, 0.4 parts of BYK-024 and 0.2 parts of Disperbyk-190 in sequence and continue stirring for 3~5 minutes until the mixture is uniform. (2) Mix 2.5 parts of 1-hydroxycyclohexylphenyl ketone and 5 parts of ethylene glycol butyl ether in proportion, stir until clear, filter through 300 mesh and add to (1), stir until even, add 1 part of 2,4,6'-trimethylbenzoylphenylphosphonic acid ethyl ester, 3.5 parts of water-based thickener-1, and 0.2 parts of water-based thickener-2 in sequence, stir at 700 rpm for 10-15 mins, then add 4 parts of deionized water, stir at 600 rpm for 3-5 mins until evenly mixed (fineness less than 20 μm) to obtain an intermediate mixture; (3) Add 4 parts of E-1011 slowly to the mixture in step (2) while stirring, and stir at 850 rpm for 25-30 mins until the fineness is less than 20 μm; (4) Add 0.5 parts of Ciba Tinuvin292 to the mixture in step (3) and stir at 500 rpm for 5-10 mins until the mixture is uniform (fineness less than 20 μm) to obtain the water-based matte UV coating.

[0030] Comparative Example 2 A method for preparing a water-based matte UV coating includes the following steps: (1) Mix 40 parts RUW-1015A and 30 parts DR-W486 and stir at 400 rpm. Then add 0.9 parts Tego 4100, 0.4 parts BYK-024 and 0.2 parts Disperbyk-190 in sequence and continue stirring for 3~5 mins until the mixture is uniform. (2) Mix 2.5 parts of 1-hydroxycyclohexylphenyl ketone and 5 parts of ethylene glycol butyl ether in proportion, stir until clear, filter through 300 mesh and add to (1), stir until even, add 1 part of 2,4,6'-trimethylbenzoylphenylphosphonic acid ethyl ester, 3.5 parts of water-based thickener-1, and 0.2 parts of water-based thickener-2 in sequence, stir at 700 rpm for 10-15 mins, then add 4 parts of deionized water, stir at 600 rpm for 3-5 mins until evenly mixed (fineness less than 20 μm) to obtain an intermediate mixture; (3) Add 4 parts of E-1011 slowly to the mixture in step (2) while stirring, and stir at 850 rpm for 25-30 mins until the fineness is less than 20 μm; (4) Add 0.5 parts of Ciba Tinuvin292 to the mixture in step (3) and stir at 500 rpm for 5-10 mins until the mixture is uniform (fineness less than 20 μm) to obtain the water-based matte UV coating.

[0031] Comparative Example 3 A method for preparing a water-based matte UV coating includes the following steps: (1) Put 70 parts of RUW-1015A into the oil container and stir at 400 rpm. Then add 0.9 parts of Tego 4100, 0.4 parts of BYK-024, and 0.2 parts of Disperbyk-190 in sequence and continue stirring for 3~5 minutes until the mixture is uniform. (2) Mix 2.5 parts of 1-hydroxycyclohexylphenyl ketone and 5 parts of ethylene glycol butyl ether in proportion, stir until clear, filter through 300 mesh and add to (1), stir until even, add 1 part of 2,4,6'-trimethylbenzoylphenylphosphonic acid ethyl ester, 3.5 parts of water-based thickener-1, and 0.2 parts of water-based thickener-2 in sequence, stir at 700 rpm for 10-15 mins, then add 4 parts of deionized water, stir at 600 rpm for 3-5 mins until evenly mixed (fineness less than 20 μm) to obtain an intermediate mixture; (3) Add 4 parts of E-1011 slowly to the mixture in step (2) while stirring, and stir at 850 rpm for 25-30 mins until the fineness is less than 20 μm; (4) Add 0.5 parts of Ciba Tinuvin292 to the mixture in step (3) and stir at 500 rpm for 5-10 mins until the mixture is uniform (fineness less than 20 μm) to obtain the water-based matte UV coating.

[0032] Test case The water-based matte UV coatings obtained in Examples 1-5 and Comparative Examples 1-3 were respectively applied to black PC substrates. The coating process was as follows: (1) Mix the matte UV coating with deionized water at a ratio of 100:10~15, stir at low speed of 300 rpm for 5 minutes, and then filter through 300 mesh to obtain coating A.

[0033] (2) The coating A obtained in step (1) is sprayed onto the product in a clean room. The temperature of the clean room is controlled at 20-30℃, the humidity is controlled at 40-60%, the spraying air pressure is 0.4MPa, and the wet film thickness is controlled at 13-18μm.

[0034] (3) Place the sprayed product from step (2) in a cleanroom, with the temperature controlled at 20-30℃ and the humidity at 40-60%, for 2-3 minutes. Then place the product in an oven at 70℃ for 10 minutes, followed by UV curing at 800 kcal / kg. 900 mJ / cm 2 Light intensity 95~105 mW / cm 2 The final sample with a dry film thickness of 15~16μm was obtained.

[0035] The final samples of the water-based matte UV coatings of each embodiment and comparative example of the present invention were tested using standard methods or relevant enterprise standard methods. The test results are shown in Tables 1 and 2. As can be seen from the results in the table above, Examples 1-5 best reflect the product characteristics, namely, the coating has a uniform appearance and good performance in terms of broad chemical resistance, high hardness, high temperature and humidity resistance, weather resistance and other basic properties, meeting the technical requirements; the adhesion of Comparative Example 1 deteriorated after 504 hours of high temperature and humidity resistance; the appearance of Comparative Example 2 was slightly mottled, and the adhesion deteriorated after chemical resistance. The adhesion of Comparative Example 3 deteriorated after 504 hours of high temperature and humidity resistance. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water-based high-performance matte UV coating, characterized in that, The raw materials contained in the matte UV coating and the weight proportions of each raw material are as follows: Waterborne UV Resin A 50-70 parts Waterborne UV Resin B 10-20 parts 0.5-1.5 parts of water-based wetting agent 0.2-1 part of water-based wetting defoamer 0.2-1 part of aqueous wetting and dispersing agent Aqueous photoinitiator-1 1-3 parts 2-6 parts of cosolvent Aqueous photoinitiator-2 0.5-1.5 parts Water-based thickener - 1 2-6 parts Water-based thickener - 2 0.1-1 parts 3-10 parts deionized water 3-5 parts of matte powder 0.2-1 part of weather-resistant additive.

2. The water-based high-performance matte UV coating according to claim 1, characterized in that, The waterborne UV resin A is RUW-1015A from Shenzhen Ruisheng New Materials Co., Ltd.; the waterborne UV resin B is DR-W486 from Changxing Materials Industry Co., Ltd.

3. The water-based high-performance matte UV coating according to claim 1, characterized in that, The aqueous wetting agent is Tego 4100; the aqueous wetting defoamer is BYK-024; and the aqueous wetting dispersant is Disperbyk-190.

4. The water-based high-performance matte UV coating according to claim 1, characterized in that, The aqueous photoinitiator-1 is 1-hydroxycyclohexylphenyl ketone; the cosolvent is ethylene glycol butyl ether; and the aqueous photoinitiator-2 is ethyl 2,4,6'-trimethylbenzoylphenylphosphonate.

5. The water-based high-performance matte UV coating according to claim 1, characterized in that, The water-based thickener-1 is composed of 10 wt% BYK-Laponite RDS and 90 wt% deionized water; the water-based thickener-2 is ELEMENTIS-RHEOLATE 299.

6. The water-based high-performance matte UV coating according to claim 1, characterized in that, The conductivity of the deionized water is <5 μS / cm.

7. The water-based high-performance matte UV coating according to claim 1, characterized in that, The matte powder is Tosoh-E-1011.

8. The water-based high-performance matte UV coating according to claim 1, characterized in that, The weather-resistant additive is CibaTinuvin 292.

9. A method for preparing the water-based high-performance matte UV coating according to claim 1, characterized in that, The preparation method includes the following steps: each raw material is measured in parts by weight; (1) Mix 50-70 parts of waterborne UV resin A and 10-20 parts of waterborne UV resin B, and stir at a speed of 300-500 rpm. Then add 0.5-1.5 parts of waterborne wetting agent, 0.2-1 parts of waterborne wetting defoamer, and 0.2-1 parts of waterborne dispersant in sequence, and continue stirring for 3-5 minutes until the mixture is uniform. (2) Mix 1-3 parts of photoinitiator-1 and 2-6 parts of cosolvent in proportion, stir until clear, filter through 300 mesh and add to (1), stir until even, add 0.5-1.5 parts of photoinitiator-2, 2-6 parts of water-based thickener-1 and 0.1-1 parts of water-based thickener-2 in sequence, stir at a stirring speed of 600-800 rpm for 10-15 mins, then add 3-10 parts of deionized water, stir at a stirring speed of 400-600 rpm for 3-5 mins until evenly mixed to obtain an intermediate mixture; (3) Add 3-5 parts of the matte powder slowly to the mixture in step (2) while stirring, and stir at a stirring speed of 800-1000 rpm for 25-30 mins until the fineness is less than 20 μm; (4) Add 0.2-1 parts of weather-resistant additive to the mixture in step (3), and stir at a stirring speed of 400-600 rpm for 5-10 mins until the mixture is uniform, to obtain the water-based high-performance matte UV coating.

10. The preparation method according to claim 9, characterized in that, In steps (1), (2), (3), and (4), the standard for uniform mixing is a detection fineness of less than 20 μm.

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