Primer-topcoat epoxy heavy-duty anticorrosive coating

Abstract

The invention relates to primer-topcoat heavy-duty anticorrosive coating and belongs to the technical field of heavy-duty anticorrosive coating. The primer-topcoat heavy-duty anticorrosive coating ismainly characterized by comprising the following components in percentage by weight: 25%-35% of a low molecular weight bisphenol A glycidyl ether epoxy resin Epon828 base material, 10%-20% of a reaction type toughening diluent 277, 12%-35% of a cardanol-modified amine curing agent, 5%-10% of high-titanium powder pigment, 30%-40% of barium sulfate filler and 0.7%-2.4% of auxiliaries. The primer-topcoat heavy-duty anticorrosive coating provided by the invention has the advantages that all the key indexes thereof substantially exceed those of existing anticorrosive coating, the protection life ofthe high-performance coating with long-lasting protection in rigor and corrosive environment can reach more than 20 years, pollution can be reduced, the environment can be improved, resources can besaved, cost can be reduced, and economic benefit can be improved.

Description

technical field [0001] The invention relates to an epoxy heavy-duty anti-corrosion coating with integrated bottom and surface, belonging 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 global economic loss caused by corrosion of steel products is about 1 trillion US dollars every year, accounting for 2%-4% of the gross national product (GNP) of each country. Corrosion loss is 6 times the total loss of comprehensive natural disasters, that is, earthquake, typhoon, flood, 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 iron and steel products from corrosion or prolong their service life, usually the surface of st...

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, improve the environment, but also save resources, reduce costs, and improve economic benefits