Ultrahigh-solid-content and high-durability environment-friendly low-surface-treatment epoxy high-build coating and preparation method thereof

Abstract

The invention discloses an ultrahigh-solid-content and high-durability environment-friendly low-surface-treatment epoxy high-build coating and a preparation method thereof, and relates to the technical field of metal surface anti-corrosion treatment. The preparation method comprises the following steps of: well stirring medium-viscosity epoxy resin, low-viscosity epoxy resin, unsaturated polyester resin, acetone, ethanol, modified zinc phosphate, iron oxide red, aluminum paste, mica iron oxide, filler, an adhesion promoter, a high-efficiency dispersant and other auxiliaries in a stirrer, adjusting the viscosity, and mixing a curing agent before construction. The low-surface-treatment coating prepared by the invention is convenient to construct, realizes green application and green use of the green coating, and is suitable for anti-corrosion maintenance of various steel structures and new steel structures.

Description

technical field [0001] The invention relates to the technical field of metal surface anticorrosion treatment, in particular to the technology of solvent-based low surface treatment environmental protection paint. Background technique [0002] The current mainstream products of anti-corrosion coatings are solvent-based coatings. Solvent-based coatings contain a large amount of volatile organic solvents, and their pollution is harmful in the following two aspects: (1) Toxic solvents volatilize into the atmosphere, causing primary pollution to the atmosphere. (2) Toxic substances such as ozone and nitrogen oxides produced by the photochemical reaction of volatile organic solvents are the main cause of atmospheric smog in recent years, causing secondary pollution to the atmosphere. According to statistics, the VOC released into the atmosphere by paint every year Up to millions of tons, both polluting the environment and wasting resources. Therefore, it is one of the developmen...

AI Technical Summary

Problems solved by technology

Solvent-based coatings contain a large amount of volatile organic solvents, and their pollution hazards are as follows: (1) Toxic solvents volatilize into the atmosphere, causing primary pollution to the atmosphere

(2) Toxic substances such as ozone and nitrogen oxides produced by the photochemical reaction of volatile organic solvents are the main cause of atmospheric smog in recent years, causing secondary pollution to the atmosphere. According to statistics, the VOC released into the atmosphere by paint every year Up to millions of tons, both polluting the environment and wasting resources

However, the VOC content of the coating should be further reduced to meet the stricter environmental protection limit index requirements

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