Environment-friendly surface treating agent

Abstract

The invention discloses an environment-friendly surface treating agent which comprises the following raw materials in parts by weight: 20-30 parts of di-n-amyl ether, 10-12 parts of octadecanol, 6-8 parts of a surface active agent, 4-7 parts of a wear-resistant anti-rust agent, 4-6 parts of a bactericide, 2-5 parts of a buffering agent, 4-6 parts of lanthanum dialkyl dithiocarbamate and 20-30 parts of water. Through optimization for the formula of surface treating agent according to the invention, the generated protective film has excellent impact resistance, the adhesive force of coating is improved, the corrosion resistance of metal surface is enhanced and the surface treating agent has safety and environmental protection property.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to an environment-friendly surface treatment agent. Background technique [0002] In order to ensure or improve the corrosion resistance and coating or plastic spraying effect of the metal surface, it is often necessary to chemically treat the surface of the metal plate, such as: steel plate, zinc plate or aluminum plate, to remove the oil or oxide layer on the surface of the metal plate, and An anti-corrosion layer is formed on the metal surface, and it has good adhesion with painting materials or plastic spraying materials. The most common of the existing metal surface chemical treatment technologies is the surface phosphating treatment technology. The metal surface is treated with a phosphating agent to form a layer of phosphating film on the surface. Its main composition is phosphate crystals, and its phosphoric acid Salt crystals are physically deposited on the metal...

AI Technical Summary

Problems solved by technology

Although the metal surface phosphating treatment technology has the advantages of strong film formation, strong corrosion resistance and strong adhesion, there are also impurities containing phosphorus, zinc, calcium, nickel, manganese, chromium, nitrate and nitrite. Substances that are harmful to the environment, whether in the process of treatment or the discharge of waste water after treatment, may cause environmental pollution and other issues

As a technology that can replace the traditional phosphating treatment, there are known zirconium compound treatment methods and zirconium compound combined with organosilane treatment methods. However, when using the above surface treatment methods that can replace the traditional phosphating treatment process, metal materials Corrosion resistance equivalent to chromate or phosphate treatment cannot be obtained

Using chromate-treated or phosphate-treated metal materials, the chemical reaction film layer obtained on the surface is investigated by neutral salt spray test, and its corrosion resistance can reach 1h, while zirconium compound treatment and / or zirconium compound Combined with the organic silane treatment method, the corrosion resistance of the chemical reaction film layer is only 10 minutes, which cannot fully meet the antirust requirements of the existing industrial processes