Metal surface silane treating agent containing acrylic acid and preparation method of metal surface silane treating agent

Abstract

The invention discloses metal surface silane treating agent containing acrylic acid and a preparation method of the metal surface silane treating agent. The metal surface silane treating agent containing acrylic acid is a mixed solution which is prepared from the following components: ethenyl tri-(beta-methoxyethyoxyl) silane, film-forming resin, acrylic acid, triethanolamine, oxalic acid, propylene glycol, 2-n-octyl-4-isothiazolin-3-acetone, polydimethylsiloxane, antioxidant 1010, sodium bicarbonate and ethylene glycol dimethyl ether. According to the metal surface silane treating agent and the preparation method of the metal surface silane treating agent disclosed by the invention, the ethenyl tri-(beta-methoxyethyoxyl) silane is adopted as the main material, glycol dimethyl ether is adopted as a solvent, and the cost is low; meanwhile, acrylic acid and various different auxiliary materials are added to the materials, and the treatment time and the treatment temperature of the treating agent are improved. When the silane treating agent disclosed by the invention is used to treat a metal workpiece, a polyacid film layer is formed on the surface of the metal workpiece; the film layer has the characteristics of being strong in adhesive force, free of holes and cracks, compact and uniform and small in polar current density; moreover, 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 a metal surface silane treatment agent containing acrylic acid 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...

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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