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

被引：41
|
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
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2018年 / 109卷
基金：
中国国家自然科学基金;
关键词：
Graphene; Polymer-matrix composites (PMCs); Electrical properties; High-temperature properties; POLY(VINYLIDENE FLUORIDE); FUNCTIONALIZED GRAPHENE; POLYMER NANOCOMPOSITES; MECHANICAL-PROPERTIES; POLYIMIDE COMPOSITES; HYBRID FILMS; CONSTANT; OXIDE; PERMITTIVITY; FABRICATION;
D O I：
10.1016/j.compositesa.2018.03.035
中图分类号：
T [工业技术];
学科分类号：
08 ;
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.
引用
收藏
页码：578 / 584
页数：7
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