Non-ferrous metal surface treatment agent and preparation method thereof

Abstract

The invention discloses a non-ferrous metal surface treatment agent and a preparation method thereof. The non-ferrous metal surface treatment agent is characterized in that all components of raw materials are composed of, by weight, 15-20 parts of sodium polyacrylate, 18-22 parts of trifluoroethanol, 3-4 parts of nonyl phenol polyoxyethylene ether, 1-2 parts of sodium dodecyl sulfate, 2-4 parts of sodium citrate, 2-4 parts of EDTA tetrasodium salt, 5-7 parts of chitosan, 4-6 parts of a rust remover, 3-5 parts of a corrosion inhibitor, 3-5 parts of an alkaline cleaner and 2-3 parts of silicon dioxide. The non-ferrous metal surface treatment agent is high in detergency power, good in cleaning effect, free of phosphorus and organic solvent and capable of preventing metal from oxidation and corrosion and keeping the surface of the metal bright, residual liquor generated after cleaning is free of pollution to the ecological environment, a layer of compact protective film can be formed on the surface of the metal, the surface tension and the interfacial tension are lowered, metal ions can be fixed, sensitivity to temperature variation is low, and stability is good; the situation that the mechanical performance of the metal is lowered is avoided, and the strength of steel can be maintained; and the influence on the environment is small, and treatment is more convenient.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal surface treatment agents, and in particular relates to a nonferrous metal surface treatment agent and a preparation method thereof. Background technique [0002] Different degrees of oxidation and corrosion often occur in the process of metal processing, handling and use, which reduces the service life of metal materials or metal equipment. Therefore, it is necessary to treat the metal surface to increase its anti-oxidation and anti-corrosion capabilities service life. Coating is a commonly used technology for metal surface treatment. Phosphating during the coating process will produce a large amount of phosphorus-containing wastewater, and it needs to be carried out under strong acid or strong alkaline conditions, which will cause great harm to human health and the environment. Traditional chemical rust removal usually uses strong acid, which can chemically react with rust and metal oxi...

AI Technical Summary

Problems solved by technology

There are also obvious defects in the acid treatment method: that is, the generation of a large amount of hydrogen during the treatment process will cause hydrogen embrittlement of the steel, which will cause the mechanical properties of the metal to decline and affect the strength of the steel itself; Health and corrosion of the surrounding equipment and environment; the consumption of acid is also large, increasing the cost of treatment; this type of acid will cause excessive corrosion of steel

In addition, the residues produced in large quantities need to be discharged frequently, which not only seriously corrodes industrial pipelines, but also pollutes the soil and the environment.