High performance chlorinated polyethylene-epoxy resin anticorrosive coating system

Abstract

The invention discloses a high performance chlorinated polyethylene-epoxy resin anticorrosive coating system, which consists of a surface coating, an intermediate coating and a prime coating which are matched, wherein the surface coating is a high performance chlorinated polyethylene anticorrosive finish paint; the intermediate coating is a high performance chlorinated polyethylene / epoxy resin semi-interpenetrating network anticorrosive middle coating; and the prime coating is an epoxy resin micaceous iron oxide anti-corrosive primer. The preparation for the coating system comprises the preparation of surface coating and the intermediate coating; the coating construction is orderly multi-layer coating construction on the surface of a metal substrate; and finally the functionally graded anticorrosive coating is formed so as to effectively improve interface bonding force and adhesive force of various layers and fully exert the corrosion resistance of the high performance chlorinated polyethylene and the substrate bonding function of the epoxy resin; and the functionally graded anticorrosive coating has good corrosion resistance, such as the resistance to acid, alkali, saline water, gasoline and the like, and also has good physical and mechanical properties, such as shock resistance and flexibility, so the functionally graded anticorrosive coating has important application value in anticorrosive fields such as steel structures, bridges, metallurgy, chemical industry and the like, in particular heavy duty anticorrosive field of petrochemical industry.

Description

technical field

[0001] The invention relates to the fields of polymer anticorrosion coatings and functionally gradient materials, in particular to a high-chlorinated polyethylene-epoxy resin functionally gradient anticorrosion coating system and a preparation method thereof. Background technique

[0002] While metal materials have created rich material civilization for human beings, metal corrosion has also caused huge losses to human society, and anti-corrosion coatings are a simple and effective method to prevent and slow down corrosion. Chlorinated rubber anti-corrosion coating is a kind of cheap anti-corrosion coating, but due to the serious pollution in the production process of chlorinated rubber, developed countries in the world have banned it since 2000, and my country will also begin to restrict production in 2010. Highly chlorinated polyethylene resin (HCPE) is a random polymer formed by chlorination of polyethylene. The chlorine content in its molecule can reach 6...