Polyving akohol chrome-free corrosion-resistant silane passive film

Abstract

The invention discloses a polyving akohol chrome-free corrosion-resistant silane passive film. The polyving akohol chrome-free corrosion-resistant silane passive film is prepared from, by weight, dodecafluoroheptyl methacrylate, hexafluorobutyl methacrylate, a silane coupling agent KH560, azodiisobutyronitrile, a silane coupling agent KH570, a proper quantity of a silane coupling agent KH858, imvite, triethoxy methyl silane, aluminum acetylacetonate, polyether amine, ammonium metavanadate, hexafluorotitanic acid, sodium molybdate, trisodium phosphate, silica sol, polyving akohol, a proper amount of absolute ethyl alcohol, a proper amount of tetrahydrofuran, a proper amount of isopropanol, a proper amount of dilute hydrochloric acid, a proper amount of dilute nitric acid and a proper amount of deionized water. Prepared passivating liquid can form a film layer on the surfaces of various kinds of substrates, the adhesive force is high, the compactness is good, the film is high in abrasion resistance, oil resistance, salt mist resistance and alkali resistance, and the film is free of pollution to the environment, harmless to human bodies and worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of chromium-free passivation, in particular to a polyvinyl alcohol chromium-free corrosion-resistant silane passivation film. Background technique [0002] Galvanized wide-band 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 wide-band steel plate is becoming more and more closely related to people’s lives. Use color-coated panels and car benches. Because zinc is very active, it is easily corroded by acids, alkalis, oxygen, carbon dioxide and water vapor 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, low cost and simple process, but the chromium ions contained in the chromate...

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