High mechanical properties Hydroxyl-containing polyurethane copolymerized acrylic acid waterborne industrial paint

Abstract

The invention relates to the technical field of aqueous coatings, and especially relates to a hydroxyl group-containing polyurethane acrylate copolymer aqueous industrial paint with high mechanical performances, applied to metal or plastic substrates. The hydroxyl group-containing polyurethane acrylate copolymer aqueous industrial paint with high mechanical performances has the characteristics of high hardness, good anticorrosion, good flexibility, strong adhesion, good salt spray resistance and low cost. The paint comprises a main agent and a curing agent, and the main agent comprises, by weight, 0.1-2 parts of an antifoaming agent, 10-35 parts of a pigment, 30-80 parts of a polyurethane / acrylate copolymer emulsion and 0.1-2 parts of a wetting agent; and the curing agent comprises 50-100 parts by weight of a hydrophilically modified HDI trimer, and the main agent and the curing agent are cooperatively used.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to a high-mechanical-performance hydroxyl-containing polyurethane copolymerized acrylic acid water-based industrial paint applied to metal or plastic substrates. Background technique [0002] Water-based paint is the mainstream direction of the world's paint development. In the past ten years, from the government to scientific research institutions and enterprises, great efforts have been made to promote the development of water-based paint. During this process, the water-based resin technology has been developed to a certain extent, especially the domestic sales of water-based wood paints dominated by home decoration have shown a momentum of gradual growth. However, in the field of industrial machinery and equipment, since the country has no special mandatory requirements for the environmental protection of paint in this field, the places where it is used are not as h...

AI Technical Summary

Problems solved by technology

Alkyd water-based paint has good brightness but low hardness and poor anti-corrosion performance. Polyurethane water-based paint has good flexibility but low hardness and high cost. Acrylic water-based paint has good hardness but poor toughness and poor adhesion. Epoxy water-based industrial paint Good anti-corrosion performance, but poor surface effect and poor decoration

Therefore, most of the existing water-based industrial paints on the market have certain defects.