Functionalized mesoporous silica/polyimide nanocomposite thin films with improved mechanical properties and low dielectric constant

被引：82
|
作者：
Min, Chun-Kuo [1 ]
Wu, Tai-Bor [1 ]
Yang, Wei-Ta [2 ]
Chen, Chi-Lun [2 ]
机构：
[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan
[2] Ind Technol Res Inst, Mat & Chem Labs, Hsinchu 310, Taiwan
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2008年 / 68卷 / 06期
关键词：
nanocomposite; mechanic properties; thermal properties; dielectric constant;
D O I：
10.1016/j.compscitech.2007.09.021
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
A series of composite thin films composed of mesoporous silica (SBA- 15) filled in polyimide were synthesized. The effect of SBA- 15 modified with functional group of octyltrimethoxysilane (OTMS) or 3-aminopropyl trimethoxy silane (ATS) on the mechanical and dielectric properties as well as the thermal stability of thin films were investigated. The tensile strength and elongation of the composite films containing SBA-15 modified with ATS were higher than those with OTMS and pristine SBA-15. The dielectric constant was significantly reduced with increasing SBA- 15 modified with ATS. The result indicates that the composite materials are potentially useful in radio-frequency/microwave substrate materials. (C) 2007 Published by Elsevier Ltd.
引用
收藏
页码：1570 / 1578
页数：9
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