An impact-resistant anti-corrosion coating

Abstract

The invention relates to a special impact-resistant anti-corrosion coating, especially for the anti-corrosion of medium and small boiler flue gas wet desulfurization and dust removal integrated equipment, boilers, container tanks and other equipment, which can well solve the problems of anti-corrosion equipment. Physical corrosion damage such as peeling, delamination, cracking and falling off of the coating formed by the vinyl ester resin glass flake coating caused by tremors during hoisting, transportation and operation. The coating components are composed of: phenolic vinyl ester resin, additives, pigments, curing agents, accelerators, fillers, thixotropic agents, glass flakes, and solvents. The mass percentage range is: phenolic vinyl ester resin 20- 80%, auxiliary agent 2-5%, pigment 2-6%, curing agent 0.5-10%, accelerator 0.25-12%, thixotropic agent 0.5-5%, glass flake 0-45%, solvent 0-5% , the remaining fillers. Especially in the design and selection of fillers, carbon fiber, glass fiber reinforced chopped strand mat and other fillers are used to maximize the impact resistance of the coating. The coating of the present invention has good resistance to medium penetration, acid resistance, impact resistance, alkali resistance, wear resistance, small shrinkage rate when hardened, small thermal expansion coefficient, good adhesion to the substrate, and resistance to sudden temperature changes. Good, it can work at 185°C for a long time, and the maximum temperature can reach 235°C instantaneously, and it is convenient for construction, easy to repair, and low in cost.

Description

technical field [0001] The invention relates to an impact-resistant anti-corrosion coating, especially for the anti-corrosion of medium and small boiler flue gas wet desulfurization and dust removal integrated equipment, boilers, container tanks and other equipment, which can well solve the problem of hoisting anti-corrosion equipment Physical corrosion damage such as peeling, delamination, cracking and falling off of the coating formed by the phenolic vinyl ester resin glass flake coating caused by tremors during transportation and operation. Background technique [0002] At present, the wet flue gas desulfurization system has strict requirements on materials such as corrosion resistance, wear resistance, temperature resistance, and impermeability. Nowadays, flue gas desulfurization devices often use nickel-based alloys or carbon steel inner-coated titanium plates, which all exist It is prone to pitting corrosion, crevice corrosion, electrochemical corrosion, etc., destroyi...

AI Technical Summary

Problems solved by technology

The fillers in the paint are scientifically designed and selected, and the impact resistance of the paint layer is improved by adding fillers such as carbon fiber and glass fiber reinforced chopped strand mat. The disadvantage of poor adhesion strength improves the adhesion and corrosion resistance of the coating. Compared with the traditional vinyl ester resin glass flake coating, the impact resistance and adhesion index of the coating are greatly improved. , Small boiler flue gas wet desulfurization and dust removal integrated comprehensive equipment anti-corrosion requirements, and solve the vibration of the equipment in hoisting, transportation and operation caused by the traditional vinyl ester resin glass flake coating to form coating peeling, delamination, cracking and Physical corrosion damage such as detachment

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