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Preparation and characterization of polyimide/silica hybrid films

Preparation and characterization of polyimide/silica hybrid films
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摘要 A kind of hybrid polyimide films was prepared by synthesizing poly(amic acid)/Silica matrix resin through sol-gel technique and then followed by positing it on a silex glass plate and drying at high temperature. The effect of silica content on the corona-resistant property of the films was studied. The miscibility between the organic and inorganic phases and its effect on the corona-resistant property were investigated with aminopropyltriethoxysilane, which served as a coupling agent, added into the polyimide composite system. The chemical structure and the surface morphology of the films were characterized by FTIR and AFM respectively. The corona-resistant property of the films was tested by a rod-plate electrode. It proved that the corona-resistant property was enhanced with silica content. It also turned out that the improvement of the miscibility between the two phases due to the presence of covalent force as a result of the addition of the coupling agent had, to some extent, effect on the corona-resistant property of the films. Furthermore, a theory on the corona-resistant property was put forward preliminarily. A kind of hybrid polyimide films was prepared by synthesizing poly (amic acid ) /Silica matrix resin through sol-gel technique and then followed by positing it on a silex glass plate and drying at high temperature. The effect of silica content on the corona-resistant property of the films was studied. The miscibility between the organic and inorganic phases and its effect on the corona-resistant property were investigated with aminopropyltriethoxysilane, which served as a coupling agent, added into the polyimide composite system. The chemical structure and the surface morphology of the films were characterized by FTIR and AFM respectively. The corona-resistant property of the films was tested by a rod-plate electrode. It proved that the corona-resistant property was enhanced with silica content. It also turned out that the improvement of the miscibility between the two pha- ses due to the presence of covalent force as a result of the addition of the coupling agent had, to some extent, effect on the corona-resistant property of the films. Furthermore, a theory on the corona-resistant property was put forward preliminarily.
出处 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2006年第4期439-443,共5页 哈尔滨工业大学学报(英文版)
基金 Sponsored by the National Natural Science Foundation of China(Grant No.50137010, 50373008 and 50377009).
关键词 POLYIMIDE MORPHOLOGY corona-resistant property 聚酰亚胺 形态学 制备 薄膜
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