Metal surface silicane treating agent containing polyethylene glycol and preparing method thereof

Abstract

The invention discloses a metal surface silicane treating agent containing polyethylene glycol and a preparing method thereof. The metal surface silicane treating agent containing the polyethylene glycol is a mixed solution which is prepared from following compositions of silane coupling agent KBM403, film forming resin, the polyethylene glycol, ammonium molybdate, propylene glycol, acetic styrene-acrylic emulsion, phytic acid, polydimethyl siloxane, oxalate, pyrocatechin and ethanol. The metal surface silicane treating agent containing the polyethylene glycol is low in cost by using the silane coupling agent KBM403 as main materials and the ethanol as solvent, and simultaneously the polyethylene glycol and various accessory ingredients are added into raw materials, so that processing time and processing temperature of the treating agent are improved. When a metal workpiece is processed by using the silicane treating agent, a polyacid film layer is formed on the surface of the metal workpiece, and the film layer has the advantages of being strong in adhesive force, without a cavity and a rift, compact and uniform and low in polarization current density, and furthermore 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 polyethylene glycol 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 d...

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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 nitrous acid. Salt and other carcinogens are very serious 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 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 development direction of metal surface protection alone. In the existing technology, the film layer formed on the surface of metal workpieces treated with silane solution has uneven density, cavities, cracks, and weak adhesion to the metal body.