聚酰亚胺
三元运算
材料科学
高分子化学
热稳定性
溶胶凝胶
混合材料
缩聚物
化学工程
二甲基甲酰胺
氧化物
水解
聚合物
有机化学
化学
复合材料
溶剂
纳米技术
图层(电子)
计算机科学
工程类
程序设计语言
冶金
作者
Wulin Qiu,Yunjun Luo,Futai Chen,Yinquan Duo,Tan Hui‐min
出处
期刊:Polymer
[Elsevier]
日期:2003-09-01
卷期号:44 (19): 5821-5826
被引量:59
标识
DOI:10.1016/s0032-3861(03)00627-x
摘要
Polyimide/inorganic hybrids were prepared by sol–gel reaction starting from tetraethoxysilane (TEOS), and tetrabutyl titanate (TBT) in the solution of polyamic acid in N,N-dimethylformamide. The hybrid films were obtained by the hydrolysis-polycondensation of TEOS and TBT in polyamic acid solution, followed by the elimination of solvents and imidization process. Binary polyimide/SiO2 and polyimide/TiO2 hybrids, as well as ternary polyimide/SiO2–TiO2 hybrids (with varied ratio of SiO2 to TiO2) were prepared to study the effects of the recipes and inorganic components on the morphologies of the polyimide hybrids. Transparent films with much higher inorganic content can be obtained in ternary polyimide hybrids, while lower inorganic content in binary hybrids. The results also indicate that the inorganic particles are much smaller in the ternary systems than in the binary systems, the shape of the inorganic particles and the compatibility for polyimide and inorganic moieties are varied with the ratio of the inorganic moieties in the hybrids. The completely imidization temperature of the polyamic acid was delayed, and furthermore, the thermal stability of polyimide was enhanced through the incorporation of the inorganic moieties in the hybrid materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI