Nano cerium oxide modified organic and inorganic silane passivation film

Abstract

The invention discloses a nano cerium oxide modified organic and inorganic silane passivation film. The nano cerium oxide modified organic and inorganic silane passivation film is prepared by following raw materials including dodecafluoroheptyl methacrylate, hexafluorobutyl methacrylate, a silane coupling agent KH560, azodiisobutyronitrile, a silane coupling agent KH570, a proper number of silane coupling agents KH858, cerium oxide fiber, sodium dodecyl benzene sulfonate, polyacrylamide, polyacrylamide, silica sol, hexamethyl-disilazane, sodium molybdate, ammonium hexafluorotitanate, molybdenum disulfide, ribonucleoside triphosphote, water soluble acrylic resin, a proper amount of hydrogen peroxide, a proper amount of absolute ethyl alcohol, a proper amount of tetrahydrofuran, a proper amount of dilute nitric acid and a proper amount of deionized water. Prepared passivation liquid is good in stability and can be applicable to surface treatment of steel, zinc and aluminum; a nano level oxide conversion film is formed on a treated workpiece, the uniformity and fineness of the passivation film can be greatly improved, and accordingly the durability and corrosion resisting performance can be achieved.

Description

Technical field [0001] The invention relates to the technical field of chromium-free passivation, in particular to a nano-cerium oxide modified organic-inorganic silane passivation film. Background technique [0002] Galvanized broadband steel plate refers to a steel plate coated with a layer of zinc on the surface. Galvanizing is to prevent corrosion on the surface of the steel plate and prolong the service life of the steel plate. Galvanized broadband steel plate is increasingly closely related to people's lives. It is mainly used for household appliances, mobile phone shells, and construction Use color-coated boards and car benches. Because zinc is very active, it is easily corroded by acid, alkali, oxygen, carbon dioxide, water vapor and other substances in the atmosphere, so it needs to be passivated. The traditional passivation method of galvanized sheet generally adopts passivation containing chromate. This method has the advantages of excellent film-forming performance, ...

AI Technical Summary

Problems solved by technology

The chromium-free passivation solution provided by the author can fundamentally solve the problem of toxic and harmful chromium ions poisoning people in the existing passivation solution, and can also truly replace the chromium-containing passivation solution to realize the conversion of electro-galvanized wide-band steel sheets. However, the plating film formed by this chromium-free passivation solution still cannot meet the market demand in terms of low friction, anti-oxidation, corrosion resistance, self-lubrication, wear resistance, etc., and further modification is needed to improve the application field and expand the application prospect