Two-component water-based matte clear finish paint and preparation method thereof

Abstract

The invention discloses two-component water-based matte clear finish paint. The finish paint comprises a substrate and a curing agent, wherein the substrate comprises the following components: in parts by weight, 75-82 parts of a water-based acrylic emulsion, 3-8 parts of a polyurethane dispersion, 1-3 parts of dipropylene glycol methyl ether, 1-3 parts of dipropylene glycol butyl ether, 0.4-0.6 part of a modified rheological agent, 0.2-0.5 part of an antifoaming agent, 0.1-0.3 part of a substrate wetting agent, 0.5-1 part of a leveling agent, 3-5 parts of waterborne matte slurry, 3-5 parts ofa waterborne wax emulsion, 0.05-0.2 part of aminomethylpropanol and 2-8 parts of ionized water, and the curing agent is composed of 75% of isocyanate, 12% of dipropylene glycol methyl ether, 12% of dipropylene glycol butyl ether and 1% of a water removal agent. The two-component water-based matte clear finish paint has the characteristics of quick drying, good adhesion, good abrasion resistance,high transparency and a fine smooth paint layer surface, and the content of volatile organic compounds in the finish paint is less than 150 g / L, and detection results of harmful substances are lower than limits of the harmful substances.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a two-component water-based matte varnish and a preparation method thereof. Background technique [0002] Topcoat is the outermost layer of coating in the painting process. It needs to have good resistance to external conditions and necessary decoration. Most of the existing topcoats are solvent-based coatings, which have good performance but have high VOC. With the improvement of the society's awareness of environmental protection, water-based coatings have attracted widespread attention due to their advantages of non-toxicity, environmental protection and less pollution. It has the disadvantages of being difficult to dry quickly. Compared with oil-based topcoats, it also has disadvantages such as low adhesion and poor durability. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a two-component wate...

AI Technical Summary

Problems solved by technology

[0002] Topcoat is the outermost layer of coating in the painting process. It needs to have good resistance to external conditions and necessary decoration. Most of the existing topcoats are solvent-based coatings, which have good performance but have high VOC. With the improvement of the society's awareness of environmental protection, water-based coatings have attracted widespread attention due to their advantages of non-toxicity, environmental protection and less pollution. It is difficult to dry quickly. Compared with oil-based topcoat, it also has disadvantages such as low adhesion and poor durability.

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