【摘要】 利用甲基三乙氧基硅烷和钛酸四丁酯作为杂化过程中制备SiO2、TiO2的前体,采用溶胶-凝胶法制得聚酰亚胺/SiO2/TiO2杂化薄膜。SEM分析显示无机纳米粒子均匀分散在聚酰亚胺基体中,并且随着无机组分含量的增加,纳米粒子尺寸增大,当TiO2含量为1wt%、SiO2含量达到12wt%时,无机粒子尺寸达到100nm左右。TG分析结果表明引入一定量的无机纳米粒子提高了薄膜的热分解温度。更多还原

【Abstract】 A new type of polyimide/silica/titania nano-hybrid films was prepared through Sol-gel processing by the hydrolysis and condensation of methyltriethoxysilane(MTEOS)and tetrabutyl titanate.The micrographs of scanning electron microscope(SEM)indicated that the nano-inorganic particles dispersed homogeneously in the polyimide matrix and the size increased to100nm when the addition amount of titania increased to1wt%and silica12wt%.The results of Thermogravimetry Analysis(TGA)confirmed that there had been inorganic particles in thepolyˉimide and the decomposition temperature was enhanced with the addition of nano-inorganic partiˉcles.更多还原