Acrylic polyurethane paint and preparation method thereof

Abstract

The invention provides an acrylic polyurethane paint and a preparation method thereof. The acrylic polyurethane paint is composed of a component A and a component B. The component A is composed of thefollowing components by weight percentage: 20-25% of hydroxyl acrylic resin (75% solid content), 10-15% of saturated polyester resin (80% solid content), 18-25% of rutile titanium dioxide, 15-20% oftalc powder, 15-20% of precipitated barium sulfate, 10-15% of zinc phosphate, 0.1-0.5% of a wetting dispersant, 0.5-1% of an anti-sedimentation agent, 0.5-1% of a rheological assistant, 0.1-0.5% of anultraviolet absorbent, 0.1-0.5% of a defoamer, 5-10% of a solvent, and 0.01-0.05% of a catalyst. The component B is an HDI trimer. And the weight ratio of the component A to the component B is 8:1. The invention solves the problems of poor corrosion resistance, poor weatherability, low volume solid content and high VOC emission of common acrylic polyurethane finish paint in the prior art.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an acrylic polyurethane paint and a preparation method thereof. Background technique [0002] With the rapid development of my country's industrial construction and marine construction, the anti-corrosion requirements for steel facilities are getting higher and higher. The representative supporting system for heavy-duty anti-corrosion coatings is epoxy zinc-rich primer-epoxy mica iron intermediate paint-acrylic polyurethane topcoat. Traditional solvent-based epoxy zinc-rich primer, epoxy miracic iron intermediate paint and acrylic polyurethane topcoat have the disadvantages of low volume solid content, high VOC emission, and the total film thickness of spraying three layers of paint can reach 200 microns. At the same time, In the field of anti-corrosion equipment, metal surface, large-scale bridges, heavy-duty anti-corrosion projects, etc., the weather resistance, salt spray resistance, ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an acrylic polyurethane paint and a preparation method thereof to solve the problems of poor corrosion resistance, poor weather resistance, low volume solid content and high VOC emission of common acrylic polyurethane topcoats in the prior art

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