Anticorrosion composite nano paint and its preparing process

Abstract

An anticorrosion composite nano-paint contains film forming agent, dispersing liquid, antisticking agent and SiO2 colloid, where the granularity of SiO2 is 10-20 nm. Its coated layer is characterized by high hardness, adhesion and toughness, and excellent corrosion and abrasion resistance.

Description

technical field [0001] The invention relates to a nanocomposite coating for heavy anticorrosion. Background technique [0002] In the turbulent corrosion caused by droplets, jets, and particles in various acids, alkalis, salts, chlorobenzenes, etc., in addition to the corrosion of the medium and the high flow rate of the fluid, there are also liquid or solid particles on the metal surface. The mechanical damage caused by the impact is generally called erosion (also known as impact corrosion). The radial flow of liquid droplets or jets or the passing of solid particles on the surface of the material also generate shear stress on the surface of the material. However, the shear stress caused by radial flow on a smooth surface is much lower than the impact stress, so it has no effect on the corrosion of the material. However, in corrosive media, the radial shear stress is sufficient to crack or peel off the surface film, exposing a fresh surface. Erosion generally occurs at e...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to disclose a nanocomposite coating for heavy anticorrosion and its preparation method. The nanocomposite coating has good corrosion resistance and outstanding comprehensive mechanical properties such as hardness, strength and toughness, and can be used for valves, The protection of components such as elbows and impellers, to overcome the shortcomings of the previous coating protection effect is not very ideal