Long-acting acid and alkali resistant, solvent-free anticorrosion coating and its preparation method and application

Abstract

The invention relates to a long-acting acid-base resistant solvent-free anticorrosive paint which comprises a host crystal and a curing agent, wherein the weight part ratio of the host crystal to the curing agent is (100:20)-(100:60). According to the invention, the solvent-free anticorrosive paint is prepared in the following way: low-viscosity epoxy resin and modified phenolic resin are compounded with pigments, a rust-proof material, padding, a dispersing agent, an antifoaming agent, a flatting agent, an anti-sagging agent and the like, and then are matched up with cashew nut shell phenol modified amine, modified fatty amine, a catalyst and the like. The long-acting acid-base resistant solvent-free anticorrosive paint can be painted on the surfaces of various steel materials under the condition of air drying or low-temperature baking, and the film thickness of one-time anticorrosive paint coating is 800-1200 microns; the anticorrosive pain dries quickly, does not sag, is level in paint film, has excellent physical and chemical properties and the best long-acting protective function on steel material products, and is widely applied to painting of oil pipelines, ports, oil tanks, gas pipelines, steel material products needing heavy corrosion protection and the like.

Description

technical field [0001] The invention belongs to the field of coating protection for iron and steel substrate tanks, parts or pipes, and relates to epoxy resin and modified phenolic resin coatings, more specifically to a long-acting acid and alkali resistant, solvent-free anti-corrosion coating and its preparation method and application. Background technique [0002] With the process of large projects in my country and the idea of ​​relocating concentrated factories in cities, the number of anti-corrosion projects in my country is increasing rapidly every year, and the amount of anti-corrosion coatings is also greatly increasing correspondingly. The special environment and special requirements involved are also emerging. China's oil tanks, underground pipelines, storage tanks, etc. have a very large demand for anti-corrosion paint, and the requirements for anti-corrosion paint are also getting higher and higher. With the enhancement of international and domestic awareness of...

AI Technical Summary

Problems solved by technology

In the field of anti-corrosion coatings, traditional varieties and usage patterns have been continued, and a large amount of solvent volatilization has caused great harm to construction personnel and the environment

Especially in the vast northern regions, due to the drop in temperature, the solvent volatilizes more slowly or even cannot be constructed, which not only affects the progress of the project, but also causes more serious and continuous damage to the construction personnel and the environment.