A particular interfacial strategy in PVDF/OBC/MWCNT nanocomposites for high dielectric performance and electromagnetic interference shielding

被引：91

作者：

Zha, Xiang-Jun ^{[1
]}

Pu, Jun-Hong ^{[1
]}

Ma, Li-Feng ^{[1
]}

Li, Ting ^{[1
]}

Bao, Rui-Ying ^{[1
]}

Bai, Lu ^{[1
]}

Liu, Zheng-Ying ^{[1
]}

Yang, Ming-Bo ^{[1
]}

Yang, Wei ^{[1
]}

机构：

[1] Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Sichuan, Peoples R China

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2018年 / 105卷

基金：

中国国家自然科学基金;

关键词：

Polymer-matrix composites (PMCs); Electrical properties; Mechanical properties; IMPROVED ELECTRICAL-CONDUCTIVITY; CARBON NANOTUBES; POLYMER NANOCOMPOSITES; COMPOSITES; GRAPHENE; DISPERSION; BLACK; CONSTANT; BLENDS; LOCALIZATION;

D O I：

10.1016/j.compositesa.2017.11.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multi-walled carbon nanotubes (MWCNTs) were easily dispersed at the interface of polyvinylidene difluoride (PVDF) and ethylene-alpha-octene block copolymer (OBC) blend by melt compounding and the nanocomposites exhibited enhanced dielectric performance, electromagnetic interference shielding effectiveness (EMI SE) and balanced mechanical performance. Through the simple, efficient and scalable interfacial strategy to disperse MWCNTs at the interface of PVDF and OBC phases, the accumulation of charge carriers at the interfaces and strong interfacial polarization effect can be achieved. At low frequency, PVDF/OBC/MWNCT nanocomposite exhibits high dielectric permittivity (753.8) and low dielectric loss tangent (0.8), offering great potential in energy storage applications. Simultaneously, in X-band range, PVDF/OBC/MWNCT nanocomposite shows high EMI SE of around 34 dB which is higher than the industrial requirement when the content of MWCNTs is as low as 2.7 vol.%. This study provides possibilities to realize high-performance polymer nanocomposites via the particular interfacial structure through one-step melt processing.(C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：118 / 125

页数：8

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