A kind of inner cavity antirust liquid of metal parts and preparation method thereof

Abstract

The invention discloses an antirust fluid for an inner cavity of a metal part. The anti-rust fluid is prepared from the following raw materials in parts by weight: 3-4 parts of critic acid, 2-3 parts of triethanolamine, 2-3 parts of petroleum sodium sulfonate, 1-2 parts of fatty alcohol-polyoxyethylene ether, 1-2 parts of sodium molybdate, 30-34 parts of ethanol, 2-3 parts of etidronic acid, 3-4 parts of 2-butoxy-ethanol, 1-2 parts of isopropanol, 10-12 parts of ethoxylated trimethylolpropane triacrylate, 1-2 parts of ethylene diamine tetraacetic acid (EDTA) disodium, 4-5 parts of assistant and 300 parts of water. A film can be formed on the metal surface by using polymer resin and a chelating agent, so as to play air-isolation and anti-oxidation roles; meanwhile, an antirust agent can be firmly adhered, so that the anti-rust effect is long; the ingredients such as volatile acid, heavy metal ions, sodium nitrite and the like do not exist, so that the antirust fluid is free of residual rust slag, free of pollution, low in cost and good in economic benefits, and can be applied to rust control of inner cavity parts of a car of cast iron and steel materials in batches; the anti-rust requirements of the cast iron or steel parts of the car are met.

Description

technical field [0001] The invention relates to the field of antirust technology, in particular to an antirust solution for inner cavity of metal parts 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 water 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 water 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 dissolv...

AI Technical Summary

Problems solved by technology

Ordinary anti-rust water 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 water 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. It is 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