Enhanced thermal conductivity in epoxy nanocomposites with hybrid boron nitride nanotubes and nanosheets

被引：41
作者：
Su, Junlin [1 ]
Xiao, Yang [2 ]
Ren, Mao [3 ]
机构：
[1] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Peoples R China
[2] Chengdu Univ Technol, Coll Resources, Chengdu 610059, Peoples R China
[3] Sinopec, Engn Technol Inst Southwest Branch, Deyang 618000, Sichuan, Peoples R China
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2013年 / 210卷 / 12期
关键词：
boron nitride nanosheets; boron nitride nanotubes; electrical resistivity; polymer composites; thermal conductivity; GRAPHITE NANOPLATELET; POLYMERIC COMPOSITES; CARBON NANOTUBES; GRAPHENE;
D O I：
10.1002/pssa.201330213
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper is an effort to solve the issue related to the electrically insulating polymer composites for thermal interface materials applications. A novel strategy is designed to achieve both enhanced thermal conductivity and high electrical insulation of epoxy composites by combining one-dimensional boron nitride nanotubes (BNNTs) and two-dimensional boron nitride nanosheets (BNNSs). A noncovalent functionalization approach is used to functionalize and solubilize hybrid BNNTs/BNNSs fillers by 1-pyrenebutyric acid (PBA) molecules. The PBA-functionalized BNNTs/BNNSs exhibit good dispersion and high compatibility with epoxy matrix. The epoxy composites with PBA-functionalized BNNTs/BNNSs hybrid fillers yield a thermal conductivity of 0.47Wm(-1)K(-1) and an electrical resistivity of 9.3x10(16)cm at 2wt% filler loading, which outperform the epoxy composites with individual PBA-functionalized BNNTs or BNNSs fillers. (C) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：2699 / 2705
页数：7
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