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Preparation and Characterization of Hard Coating Materials Based on Silane Modified Boehmite Hybrid Materials  

Jeon, Seong Je (Department of Chemical Engineering, Hanyang University)
Kim, Woong (Department of Chemical Engineering, Hanyang University)
Lee, Jai Joon (Department of Chemical Engineering, Hanyang University)
Koo, Sang Man (Department of Chemical Engineering, Hanyang University)
Publication Information
Applied Chemistry for Engineering / v.17, no.6, 2006 , pp. 580-585 More about this Journal
Abstract
UV-thermal dually curable coating materials were prepared by the sol-gel method. Nano-sized colloidal boehmite was treated with various organo silane coupling agents. These materials could be well dispersed in various alcohols and relatively polar organic solvents such as tetrahydrofuran and acetonitrile. The coating films were prepared by a spin coating method on various substrates, which were characterized by FT-IR, Si/Al CP MAS NMR spectra, UV-Vis spectrophotometer, FE-SEM, Taber abraser, haze meter, and pencil hardness tester. The effects of molar ratio and types of silane coupling agents, curing method and ion-shower treatment were investigated. Dually curable coating method offered an optimally good quality film in both hardness and transmittance. The transparency and the hardness of the prepared films were increased with amounts of 3-(trimethoxysilyl)propylmethacrylate, and (3-glycidyloxypropyl)trimethoxysilane, respectively. The adhesion between coated layer and substrate could be enhanced by ion-shower treatment.
Keywords
silane modified boehmite; sol-gel method; hardness; transmittance;
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