Improved thermal conductivity for chemically functionalized exfoliated graphite/epoxy composites

被引：617

作者：

Ganguli, Sabyasachi ^{[1
]}

Roy, Ajit K. ^{[1
]}

Anderson, David P. ^{[2
]}

机构：

[1] AFRL, Dayton, OH 45433 USA

[2] Univ Dayton, Res Inst, Dayton, OH 45469 USA

来源：

CARBON | 2008年 / 46卷 / 05期

关键词：

D O I：

10.1016/j.carbon.2008.02.008

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：

Chemically functionalized exfoliated graphite-filled epoxy composites were prepared with load levels from 2% to 20% by weight. The viscosities of the composites having load levels >4% by weight were over the processing window for the vacuum-assisted resin transfer molding process. Wide-angle X-ray diffraction revealed a rhombohedral carbon structure in the filler. Enhanced interaction between the epoxy and the graphite filler was evidenced by an improvement in the rubber modulus for the chemically functionalized graphite/epoxy composites. The thermal and electrical properties of the nanoparticle-filled epoxy composites were measured. The electrical property of the chemically functionalized graphite/epoxy composite deteriorated. Thermal conductivity of the chemically functionalized graphite/epoxy composite, however, increased by 28-fold over the pure epoxy resin at the 20% by-weight load level, increasing from 0.2 to 5.8 W/m K. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：806 / 817

页数：12

共 27 条

[1] Thermal transport in MWCNT sheets and yarns [J].