| Summary: | 碩士 === 國立中央大學 === 化學工程與材料工程研究所 === 90 === This work describes the reaction of nanoscaled metal oxides and silane by the sol-gel process to make inorganic/organic hybrid coatings. These hybrid coatings are UV curable, hard, transparent and can improve the abrasion resistance of plastics ( eg. PC、PMMA、PVC and PET).
The nanoscaled boehmite particles and methacrylate functionalized silanes were used for the preparation of the UV curable hard coatings. After the hydrolysis and condensation of the methacryloxysilane in presence of the nanoparticles at high temperature, the sol was diluted with solvents. The solid content of this coating sol was 45wt% and it had a long pot life. The transparent coatings on plastics were produced by spin coating or wire bat and the coatings show good optical quality and excellent adhesion on plastics coated with primers.
The transparent coatings show good abrasion resistance after performing the Taber abrader test. After 500 abrasion cycles, haze values of the coating on PC、PVC、PMMA were 5~10% and for the coatings on PET film (38μm, thickness) the haze values were 2% after 100 cycles.
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