文献类型：期刊文献

英文题名：Reduced polyaniline decorated reduced graphene oxide/polyimide nanocomposite films with enhanced dielectric properties and thermostability

作者：Feng, Hao[1];Fang, Xinliang[1];Liu, Xiaoyun[1];Pei, Qibing[2];Cui, Zhong-Kai[3];Deng, Shifeng[1];Gu, Jinlou[1];Zhuang, Qixin[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Adv Polymer Mat Shanghai, Shanghai 200237, Peoples R China;[2]Univ Calif Los Angeles, Dept Mat Sci & Engn, Soft Mat Res Lab, Los Angeles, CA 90095 USA;[3]Univ Montreal, Dept Chem, Succ Ctr Ville, CP 6128, Montreal, PQ H3C 3J7, Canada

年份：2018

卷号：109

起止页码：578

外文期刊名：COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING

收录：;EI(收录号：20181605031491);WOS:【SCI-EXPANDED(收录号:WOS:000432508500054)】；

基金：This work was financially supported by the National Natural Science Foundation of China (51573045) and the International Collaboration Research Program of Science and Technology Commission of Shanghai (16520722000).

语种：英文

外文关键词：Graphene; Polymer-matrix composites (PMCs); Electrical properties; High-temperature properties

摘要：This study reports the synthesis and characterization of reduced polyaniline decorated reduced graphene oxide/polyimide (RGO@R-PANI/PI) nanocomposite films with enhanced dielectric properties and thermostability. The steric effects of R-PANI decorated on the surface of RGO not only prevented the aggregation of RGO but also improved the dispersion of RGO@R-PANI nanosheets in the PI matrix, leading to higher dielectric constant (e) and lower dielectric loss (tans) of the RGO@R-PANI/PI nanocomposite films than those of the RGO/PI nano composite films. The highest dielectric constant (25.84) was observed in the 20 wt% RGO@R-PANI/PI nano composite film (the mass fractions of RGO was 3.44%) with a low dielectric loss of 0.11 at 1 kHz. Furthermore, the 5 wt% weight loss temperature of the 20 wt% RGO@R-PANI/PI nanocomposite films was 480 degrees C, indicating the nanocomposite films are good candidates for dielectric materials under extreme temperature.