A kind of water-based anticorrosion coating and preparation method thereof

Abstract

The invention relates to the field of coatings, and specifically discloses a water-based anticorrosion coating and a preparation method thereof. The water-based anticorrosion coating includes component A and component B; the component A includes the following components in parts by mass: 15-25 parts of water-based isocyanate curing agent, 15-55 parts of zinc powder, and 1-5 parts of defoamer 1-5 parts of wetting and dispersing agent, 0.9-2 parts of anti-sedimentation thixotropic agent, 0.1-5 parts of conductive polymer / fullerene composite material, 0.5-1 part of anti-flash rust agent, 0.5-1 part of leveling agent , 1-3.5 parts of adhesion promoter, 5-15 parts of antirust pigment; said component B includes the following components in parts by mass: 5-13 parts of methyl methacrylate, 15-25 parts of butyl acrylate, benzene 7-16 parts of ethylene, 15-30 parts of epoxy resin, 1-6 parts of methacrylic acid, 1-5 parts of acrylamide, 1.5-2 parts of hydroxyethyl acrylate, 0.5-5 parts of emulsifier, and 0.5-5 parts of initiator 80-130 parts of deionized water, 0.1-1 part of ammonia water, prepared by stirring and mixing component A and component B at a mass ratio of 8-16:1, which has strong shielding properties, excellent anti-corrosion performance, It has the advantages of green environmental protection, good flexibility and strong adhesion.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a water-based anticorrosion coating and a preparation method thereof. Background technique [0002] Corrosion is a phenomenon in which metal materials undergo chemical or electrochemical interactions with the surrounding medium to become metal compounds and are destroyed. Corrosion will cause huge losses every year in the world, especially for my country, which temporarily ranks first in the world in steel production. On average, about 10-20% of the total steel production is corroded every year, and the direct economic losses caused account for about 10% of the production. About 6% of the total value, so anti-corrosion treatment is particularly important. [0003] Zinc-rich coatings use the anti-corrosion mechanism of cathodic protection for iron due to the lower electrode potential of zinc, and become a kind of anti-corrosion coating with excellent performance. In the tradit...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of low toughness and adhesion of the existing zinc-rich coatings, environmental pollution and low utilization efficiency of shielding materials in anti-corrosion coatings, a water-based anti-corrosion coating and its preparation method are provided

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