摘要
通过溶胶 凝胶方法 (sol gel) ,利用已水解的正硅酸乙酯 (TEOS)与芳香族的聚酰胺酸 (PAA)溶液混和 ,制备出了不同二氧化硅含量的杂化薄膜。在实验中 ,首次采用偶联剂来提高无机组分二氧化硅与有机组分聚酰胺酸的相容性 ,制备各种二氧化硅含量的有机 -无机透明的杂化薄膜。扫描电镜分析结果表明 ,杂化膜的微观相结构与二氧化硅的含量、偶联剂的加入有关。
Polyimide/silica hybrid material films with different silica contents have been prepared through gelation of hydrolyzed tetraethoxy silane (TEOS) and polyamic acid (PAA) in DMAC solution. In this work,coupling agents were first used for improving the compatibility of the inorganic component silica with the organic component polyimide, and the organic-inorganic transparent hybrid films can be obtained. SEM analysis reveals that the amount and structure of the coupling agent, the structure of PAA and the content of SiO 2 all affect the microstructure of the hybrid films.
基金
吉林省科委基础研究基金资助项目 (吉科合字第 19980 5 5 1号 )
