Corrosion-resistant anti-microbial aluminum-profile rare-earth silane treating fluid and preparation method thereof

Abstract

The invention discloses a corrosion-resistant anti-microbial aluminum-profile rare-earth silane treating fluid. The corrosion-resistant anti-microbial aluminum-profile rare-earth silane treating fluid is prepared from, by weight, 120-130 parts of CeCl<3>7H2O, 180-190 parts of H2O2, 0.5-0.6 part of poly-sebacic glyceryl monolaurate, 0.3-0.4 part of nano samarium, 0.4-0.6 part of turpentine oil liquid anhydride, 0.4-0.5 part of itaconic acid, an appropriate amount of deionized water, 1-1.2 parts of tetraethyl orthosilicate, 5-5.2 parts of methyl triethoxysilane, 50-53 parts of ethanol, 10-11 parts of ammonia water, 15-15.6 parts of fluorine and silicon-containing polyacrylate emulsion and 2-2.5 parts of nano zirconium dioxide. The compactness of a film formed by the treating fluid is greatly improved, and the film has certain water-repellent performance. The film forming speed is high and the film is uniform and compact by using the poly-sebacic glyceryl monolaurate, the turpentine oil liquid anhydride and the itaconic acid. The antibacterial property, the oxidation resistance and abrasion resistance of the film are improved by using the nano samarium.

Description

technical field [0001] The invention relates to the technical field of chromium-free metal surface treatment agents, in particular to a rare-earth silane treatment solution for corrosion-resistant and antibacterial aluminum profiles and a preparation method thereof. Background technique [0002] Rare earth conversion coatings and silane conversion coatings on aluminum surfaces have been widely concerned as a new generation of metal surface treatment technologies and are expected to replace chromate conversion coatings. As a corrosion inhibitor, the rare earth conversion coating has high bonding strength and good durability, but it is easy to dehydrate and cause cracks, which seriously affects the corrosion resistance. The silane conversion coating has a super-hydrophobic property, is uniform and dense, and can effectively prevent the medium from invading and corroding the substrate. However, the durability of this film layer is poor, and the corrosion resistance will quickly...

AI Technical Summary

Problems solved by technology

[0003] However, the strength, wear resistance, compactness, and corrosion resistance of the rare earth silane composite film are not enough, and the performance of the chromate conversion film has not been reached, so it needs to be improved.