Anti-corrosion coating for metal

Abstract

The invention relates to an anti-corrosion coating for metal, which is prepared from the following raw materials in parts by weight: 11-19 parts of sulfo dibutyrate dioctyl phthalate, 10-19 parts of alkyd resin, 4-10 parts of phthalic anhydride, 9-14 parts of sodium hydroxide, 8-11 parts of magnesium carbonate, 3-8 parts of polyamide, 4-6 parts of formic acid, 2-5 parts of bisphenol, 2-4 parts of carbon black and 9-15 parts of polyethylene resin. The anti-corrosion coating for metal has the beneficial effects of having strong anticorrosion performance, and forming a passivation layer and a corrosion inhibiting layer on the surface of the metal, which can protect the metal for a long term.

Description

technical field [0001] The present invention relates to a corrosion resistant coating for metals. Background technique [0002] Metal corrosion pervades all fields of national economy and national defense construction, and the harm is very serious. First, corrosion can cause significant direct or indirect economic losses. According to the statistics of industrially developed countries, the economic loss caused by corrosion accounts for about 1.5%-4.2% of the national economic output value of the year. Secondly, metal corrosion, especially stress corrosion and corrosion fatigue, often cause catastrophic major accidents and endanger personal safety. Furthermore, corrosion not only consumes a large amount of metal, but also wastes a large amount of energy, and 10%-20% of metal is lost due to corrosion every year. The anti-corrosion coating is formed after drying and curing on the surface of the substrate to be coated. Its protective effect mainly includes the following three...

AI Technical Summary

Problems solved by technology

Secondly, metal corrosion, especially stress corrosion and corrosion fatigue, often cause catastrophic major accidents and endanger personal safety

Furthermore, corrosion not only consumes a large amount of metal, but also wastes a large amount of energy. Every year, 10% -20% of metal is lost due to corrosion.