The Effect of SiO2/Al2O3Weight Ratio on the Morphological and Properties of Polyimide/SiO2-Al2O3 ternary Hybrid films
Polyimide/silica-alumina (PI/SiO2-Al2O3) hybrid films were prepared via sol-gel process with tetraethoxysilane (TEOS) and aluminum isopropylate (AIP) as inorganic precursors. The presence of SiO2 and Al2O3 inorganic phases and its weight ratio showed a remarkable effect on the microstructure and properties of the polyimide based hybrid films. The chemical structure of hybrid films was analyzed by Fourier transform infrared (FTIR) and the results showed that the completely hydrolysis of inorganic precursors and the formation of three demensional Si-O-Al network in the hybrid films. The morphology and its distribution of inorganic phases in hybrid films were studied by scanning electron microscopy (SEM). The thermal and mechanical properties of the hybrid films were measured and compared to the pure PI. Results indicated that the incorporation of inorganic enhanced the thermal stability and mechanical properties of the hybrid films. However, the UV-vis transmittance of hybrid films was reduced.
Polyimide hybrid film morphology mechanical properties thermal stability
Lizhu LIU Ling WENG Xingsong ZHU Liqian YANG Qingquan LEI
Key Laboratory of Engineering Dielectric and Its Application, Ministry of Education, College of Mate Key Laboratory of Engineering Dielectric and Its Application, Ministry of Education, College of Elec
国际会议
哈尔滨
英文
777-780
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）