Preparation method and applications of self-cleaning aqueous high-gloss varnish

Abstract

The invention discloses a self-cleaning aqueous high-gloss varnish preparation method, which comprises: S1, mixing an aqueous acrylic resin emulsion, a wetting agent, a leveling agent, an antifoamingagent, a bactericide, an ultraviolet ray absorber and handfeeling wax slurry to obtain a mixture A; S2, adding an aqueous polyurethane resin, a film forming aid, a preservative, a pH value adjuster and deionized water to the mixture A, and mixing to obtain a mixture B; S3, adding a thickener to the mixture B, mixing, and adjusting the viscosity to obtain a mixture C; S4, adding a hydrophilic polyisocyanate, propylene glycol diacetate and an adhesion promoter to a dispersing device, and dispersing to obtain a mixture D; and S5, uniformly mixing the mixture C and the mixture D to obtain a product E. According to the present invention, the paint film prepared from the aqueous varnish has advantages of good hardness, high gloss and good permeability; and the fullness, the gloss, the leveling property, the construction property and the mechanical property of the self-cleaning aqueous high-gloss varnish can meet the performances of oil-based paints, and are higher than the performances of the existing aqueous varnishes.

Description

technical field [0001] The invention relates to the technical field of environmental coatings, in particular to a preparation method and application of a self-cleaning water-based high-gloss varnish. Background technique [0002] Varnish, also known as varnish, is a coating composed of resin as the main film-forming substance plus a solvent. Since the coating and the coating film are transparent, it is also called transparent coating. Must have several functions: 1. Good appearance: including high fullness, high gloss, good leveling, no shrinkage cavity, no prickly heat, etc.; 2. Excellent protection performance: including good hardness, good flexibility, weather resistance Good, good water resistance, good salt spray resistance, etc.; 3. Excellent construction: including good wettability, not easy to sag; 4. Wide construction window: including good adaptability to temperature and humidity. [0003] Water-based paint is a paint that uses water as a diluent. Water-based pai...

AI Technical Summary

Problems solved by technology

Water-soluble paints use water-soluble resins as film-forming materials, represented by polyvinyl alcohol and its various modified products, in addition to water-soluble alkyd resins, water-soluble epoxy resins, and inorganic polymer water-based resins; Water-based wood varnish is a pure water-based environmentally friendly coating with excellent comprehensive performance. It has the characteristics of fast drying at room temperature, good film hardness, high appearance gloss, and excellent transparency. However, the existing water-based wood varnishes dry slowly and need to be baked. Baking, low gloss, easy to grind, poor permeability; and leveling, construction can not meet the needs of people's use, for this purpose to provide a self-cleaning water-based high-gloss varnish preparation method and application to meet the needs of people's use