Primer-topcoat in one epoxy heavy duty anticorrosive paint

Abstract

The invention relates to an epoxy heavy-duty anticorrosive coating with integrated primer and finish layer, belonging to the technical field of heavy-duty anticorrosive coating. The coating is mainly characterized in that: according to the weight percentage, the coating comprises 25-35 percent of low molecular weight bisphenol A glycidyl ether epoxy resin Epon828 substrate, 10-20 percent of reactive toughening thinner 277, 12-35 percent of cardanol modified amine curing agent, 5-10 percent of high-titanium powder pigment, 30-40 percent of barium sulphate filling material and 0.7-2.4 percent of auxiliary agent. All key indexes of the coating greatly exceed that of the existing anticorrosive coating; the high-performance coating which can effectively carries out the long-acting protection under the severe corrosion environment has the protecting service life of more than 20 years, reduces the pollution, improves the environment, saves the resource, reduces the cost, and improves the economical benefits.

Description

technical field [0001] The invention relates to an epoxy heavy-duty anti-corrosion coating with a bottom surface integrated, and belongs to the technical field of heavy-duty anti-corrosion coatings. Background technique [0002] Corrosion of steel products is astonishing. According to the relevant data of the Chinese Society of Corrosion and Protection, the annual economic loss of steel products due to corrosion is about 1 trillion US dollars, accounting for 2%-4% of the gross national product (GNP) of various countries. Corrosion loss is 6 times the total loss of comprehensive natural disasters, such as earthquakes, typhoons, floods, etc. The annual economic loss of steel products due to corrosion in my country is as high as 280 billion yuan, accounting for about 4% of the gross national product (GNP). 30% of steel is scrapped due to corrosion. [0003] In order to protect steel products from corrosion or prolong their service life, a protective layer is usually painted on ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of epoxy heavy anti-corrosion coating with integrated bottom surface, which solves the problem that the protection life of the existing anti-corrosion coating with integrated bottom surface is relatively short, some key performance indicators are not ideal enough, and all contain possible Volatile solvents are not conducive to environmental protection. The anticorrosion protection life of steel products through the present invention can reach more than 20 years, which can not only reduce pollution and improve the environment, but also save resources, reduce costs and improve economic benefits