Anti-corrosion metal surface silane treatment agent and preparation method thereof

Abstract

The invention discloses an anti-corrosion metal surface silane treatment agent and a preparation method thereof. The anti-corrosion metal surface silane treatment agent is a mixed solution prepared from the following components: N-(beta-aminoethyl)-gamma-aminopropyltrimethoxy silane, film-forming resin, benzoic acid monoethanolamine, waterborne polyurethane, triethanolamine, propylene glycol, sodium tripolyphosphate, carboxymethyl cellulose, phytic acid, polydimethylsiloxane, sodium dodecyl benzene sulfonate, citric acid and isopropanol. The N-(beta-aminoethyl)-gamma-aminopropyltrimethoxy silane serves as a main material, the isopropanol serves as a solvent, and the cost is low; and meanwhile, the waterborne polyurethane resin and multiple different aids are added into the raw materials, the treatment time and treatment temperature are improved, the metal workpiece is treated by employing the silanization treatment agent, a multi-acid film layer is formed on the surface, the film layer has the characteristics of high adhesion force, no hole or crack, high denseness and uniformity and low polarization current density, and the production process is environment-friendly and pollution-free.

Description

technical field [0001] The invention relates to the field of metal surface treatment, in particular to an anti-corrosion metal surface silane treatment agent and a preparation method thereof. Background technique [0002] In the field of metal surface treatment, although traditional phosphate conversion and chromate passivation surface treatment technologies can achieve good results, the waste liquid discharged during the treatment process contains heavy metal ions such as zinc, manganese, nickel, chromium and nitrous acid. Carcinogens such as salt are very serious to environmental pollution, and metal surface silanization treatment technology is considered to be expected to replace phosphate conversion treatment and chromate passivation treatment because it does not involve substances that are harmful to the environment, the production process has low energy consumption, and the technology has a wide range of applications. Chemical treatment is the latest developm...

AI Technical Summary

Problems solved by technology

[0002] In the field of metal surface treatment, although traditional phosphate conversion and chromate passivation surface treatment technologies can achieve good results, the waste liquid discharged during the treatment process Contains heavy metal ions such as zinc, manganese, nickel, chromium and carcinogens such as nitrite, which is very serious to environmental pollution, and the metal surface silanization treatment technology does not involve substances that are harmful to the environment, the production process has low energy consumption, and the technical application field Widely used, it is considered to be expected to replace phosphate conversion treatment and chromate passivation treatment. It is the latest development direction of metal surface protection alone. In the existing technology, the film formed on the surface of metal workpieces treated with silane solution has uneven density and Holes, cracks, and weak support to the metal body