Water-borne acrylic polyurethane primer-topcoat corrosion-resistant decorative coating containing double components and preparation method of coating

Abstract

The invention relates to a water-borne acrylic polyurethane primer-topcoat corrosion-resistant decorative coating containing double components. The water-borne acrylic polyurethane primer-topcoat corrosion-resistant decorative coating comprises a component A and a component B, wherein the component A comprises ingredients in parts by weight as follows: 35-55 parts of a water-borne hydroxyl acrylic acid emulsion, 10-20 parts of anti-rust pigments, 5-20 parts of coloring pigments, 5-15 parts of filler, 0.3-1.0 part of a dispersing agent, 0.2-1.0 part of a water-borne anti-settling agent, 0.3-0.6 parts of a defoaming agent, 0.3-0.6 parts of a foam breaker, 3-5 parts of a cosolvent, 4-10 parts of a rheological thickener, 0.2-0.5 parts of a substrate wetting agent, 0.3-5.0 parts of water-borne wax liquor, 0.3-0.6 parts of a flash rust preventing agent and 10-20 parts of deionized water; the component B comprises 10-15 parts by weight of a water-borne polyurethane curing agent. A preparation method comprises steps as follows: the raw materials are sequentially added to a container, are uniformly stirred at medium and high speeds and then are dispersed for 10 min respectively, a mixture is ground, the deionized water is added for uniform stirring, and the component A is prepared. The water-borne acrylic polyurethane primer-topcoat corrosion-resistant decorative coating containing the double components has the benefits of excellent outdoor weather fastness, adhesive force, water resistance, salt water resistance and salt fog resistance.

Description

technical field [0001] The invention belongs to coatings, in particular to a two-component water-based acrylic polyurethane bottom-surface-in-one anticorrosion decorative paint and a preparation method thereof. Background technique [0002] Ordinary solvent-based anti-rust paint can meet the requirements of general industrial anti-rust, that is, better physical and chemical properties, salt spray resistance up to 24-240 hours, but the general solid content of solvent-based anti-rust paint is about 50%, and its solvent is volatile The content of organic compounds is relatively high. Because the viscosity is too high, it is not easy to apply, and it needs to be diluted with solvent when coating. Solvent volatilization pollutes the environment, endangers human health, is flammable, and is not suitable for open dip coating construction. It does not meet the requirements of the national mandatory standards GB18581-2009 for interior decoration materials and GB24409-2009 for the li...

AI Technical Summary

Problems solved by technology

However, the chemical resistance of the selected resin is average, and the lead content of anti-rust pigments generally exceeds the standard, so that the lead content of ordinary water-based anti-rust paint is much greater than ≥ 90㎎ / ㎏

The performance of the two-component waterborne epoxy anti-corrosion coating meets the requirements, but the weather resistance and decoration are slightly inferior

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