Water-based rust-removal and rust-prevention solution and preparation method thereof

Abstract

The invention provides a water-based rust-removal and rust-prevention solution. The water-based rust-removal and rust-prevention solution comprises the following raw materials in parts by weight: 2-6parts of citric acid, 2-8 parts of lauryl sodium sulfate, 2-4 parts of tartaric acid, 1-2 parts of ethylene diamine tetraacetic acid, 2-6 parts of polyaspartic acid, 0.4-1.2 parts of oxidized starch,5-10 parts of cetyl-trimethyl ammonium bromide, 10-15 parts of ethoxylated lauryl alcohol sulfate, 1-2 parts of OP-10, 1-3 parts of carboxymethyl cellulose, 2-8 parts of mesoporous silica, 10-20 partsof ethylene glycol, 15-20 parts of propanediol butyl ether and 60-90 parts of water. The invention further provides a preparation method for the water-based rust-removal and rust-prevention solution.The water-based rust-removal and rust-prevention solution provided by the invention has various functions such as rust removal, decontamination, phosphorization and passivation, and is short in rustremoval time, is long in rust-prevention time and is free of corrosion on metal during reaction at the normal temperature.

Description

[0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a water-based rust-removing and anti-rust liquid and a preparation method thereof. Background technique [0002] Rust prevention on metal surfaces is an important subject in industrial production. Traditional antirust liquids and antirust oils have both advantages and disadvantages. Ordinary anti-rust liquid contains a large amount of sodium nitrite, which is carcinogenic and is not conducive to environmental protection and human health. However, the use of humectants to prolong the life of anti-rust liquid brings the disadvantages of sticking hands and dust, and cannot prevent rust for a long time . Although the general dura-film anti-rust oil is suitable for long-term anti-rust, and the film is transparent and beautiful, there are few types of colorless and transparent resins, which are unstable and easy to oxidize and change color. They also need organic solvents to ...

AI Technical Summary

Problems solved by technology

Ordinary anti-rust liquid contains a large amount of sodium nitrite, which is carcinogenic and is not conducive to environmental protection and human health. However, the use of humectants to prolong the life of anti-rust liquid brings the disadvantages of sticking hands and dust, and cannot prevent rust for a long time

Although the general dura-film anti-rust oil is suitable for long-term anti-rust, and the film is transparent and beautiful, there are few types of colorless and transparent resins, which are unstable and easy to oxidize and change color. They also need organic solvents to dissolve, which brings the danger of flammability and explosion. Not conducive to environmental protection and health

The general anti-rust oil uses mineral oil, which is difficult to degrade, and it will also cause the problem of difficult degreasing when used for short-term anti-rust