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Reparation and Performance Testing of free Radical Photocurable passivation film Modified by Titanate Coupling Agent for Hot-plated Aluminum-zinc Steel Plate

引用

Journal of Wuhan University of Technology(Materials Science) 2022年第6期37卷 1066-1072页

作者： LU Weixing WU Linling MA Chunyu YUAN Jing ZHANG Qianfeng Institute of Molecular Engineering and Applied Chemistry Anhui University of TechnologyMa’anshan 243002China Department of Civil Engineering Tongling UniversityTongling 244000China

To study the effect of free radical photocurable passivation film modified by titanate coupling agent for hot-plated aluminum-zinc plate,trimethylpropane triacrylate(TMPTA)and 2-phenoxyethyl acrylate were used as active diluents,a mixture of modified epoxy acrylate and modified polyester acrylate in a certain proportion was used as an oligomer,2-methyl-1-[4-(methylothyl)benzene]-2-morpholine acetone(907)was used as a free radical photoinitiator,isopropyl thioxanthone(ITX)was used as sensitizer,and bis(dioctyl phosphate acyl)titanate ethyltitanate acrylamide chelate(FD-812)was used as corrosion inhibitor *** UV-curing,the passivation film was characterized by neutral salt spray test,electrochemical testing and other *** general performance of the passivation film may meet the requirements of downstream users of hot aluminum-zinc steel *** neutral salt spray test,electrochemical testing and microscopic surface morphology analysis of passivation film are in *** introduction of titanate components may effectively promote the photocuring of free *** have been few reports on the titanate coupling which is added to UV-curing coating *** titanate coupling agent contains acrylamide groups and terminal amine groups,acrylamide group has oligomer and crosslinking monomer,the terminal tertiary amine groups can provide hydrogen protons,reduce oxygen polymerization,and a phosphating film is formed on the surface of the metal substrate to improve the adhesion and corrosion resistance of the coating.

关键词： cationic photocuring hot galvalume steel plate surface treatment titanate coupling agent chromium-free environmental passivation film

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