Improving thermal conductivity while retaining high electrical resistivity of epoxy composites by incorporating silica-coated multi-walled carbon nanotubes

被引：261

作者：

Cui, Wei ^{[1
,2
]}

Du, Feipeng ^{[1
]}

Zhao, Jinchao ^{[1
]}

Zhang, Wei ^{[1
]}

Yang, Yingkui ^{[3
]}

Xie, Xiaolin ^{[1
]}

Mai, Yiu-Wing ^{[2
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China

[2] Univ Sydney, Sch Aerosp Mech & Mechatron Engn J07, CAMT, Sydney, NSW 2006, Australia

[3] Hubei Univ, Fac Mat Sci & Engn, Wuhan 430062, Peoples R China

来源：

CARBON | 2011年 / 49卷 / 02期

基金：

中国国家自然科学基金;

关键词：

POLYMER COMPOSITES; CHEMICAL FUNCTIONALIZATION; HEAT-FLOW; NANOCOMPOSITES; DISPERSION; TRANSPORT; FILMS; MATRIX;

D O I：

10.1016/j.carbon.2010.09.047

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Silica-coated multi-walled carbon nanotubes (MWCNT@SiO2) were synthesized by a sol-gel method and then incorporated into an epoxy matrix. The less stiff silica intermediate shell on the MWCNTs not only alleviates the modulus mismatch between the stiff MWCNTs and the soft epoxy, but also improves the interaction between them. The thermal conductivities of the epoxy/MWCNT@SiO2 composites increase by 51% and 67% at low filler loadings of 0.5 wt.% and 1 wt.%, respectively. At the same time, the silica shell retains the high electrical resistivity of these composites. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：495 / 500

页数：6

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