Preparation and Properties of Imidazole-containing Polyimide/Silica Hybrid Films

被引：3
|
作者：
Ma Xiaoye [1 ]
Ma Xiaofei [2 ]
Qiu Xuepeng [1 ]
Liu Fangfang [1 ]
Jin Rizhe [1 ]
Kang Chuanqing [1 ]
Guo Haiquan [1 ]
Gao Lianxun [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, Polymer Composite Engn Lab, Changchun 130022, Peoples R China
[2] China Acad Space Technol, CAST Xian Inst Space Radio Technol, Xian 710000, Peoples R China
来源：
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES | 2014年 / 30卷 / 06期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
Polyimide; Silica; Benzimidazole; Sol-gel method; SOL-GEL PROCESS; SILICA HYBRID; NANOCOMPOSITES; COMPOSITES; ACID;
D O I：
10.1007/s40242-014-4242-4
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Imidazole-containing polyimide/silica(PI/SiO2) hybrid films were prepared from 3,3', 4,4'-biphenyltetracarboxylic dianhydride(BPDA) and 2,2'-di(p-aminophenyl)-5,5'-bibenzimidazole in N, N-dimethylacetamide(DMAc) by sol-gel method and thermal imidization. The hybrid film with high silica mass fraction up to 40% was transparent. Scanning electron microscope(SEM) and transmission electron microscope(TEM) results of the film indicate a homogeneous dispersion of silica nanoparticles in the polyimide matrix. One hybrid film PI/SiO2 with 15% SiO2 exhibits better mechanical properties with a tensile strength of 222 MPa, an elongation at break of 12%, and a tensile modulus of 5.66 GPa. The reinforced mechanism on mechanical properties was also studied.
引用
收藏
页码：1047 / 1050
页数：4
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