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research-article

Enhanced Thermal Conductivity for Graphene Nanoplatelets/Epoxy Resin Composites

[+] Author and Article Information
Dahai Zhu

School of Environment and Materials Engineering, College of Engineering, Shanghai Polytechnic University, Shanghai, 201209, China
1130476458@qq.com

Yu Qi

School of Environment and Materials Engineering, College of Engineering, Shanghai Polytechnic University, Shanghai, 201209, China
1525477461@qq.com

Wei Yu

School of Environment and Materials Engineering, College of Engineering, Shanghai Polytechnic University, Shanghai, 201209, China
yuwei@sspu.edu.cn

Lifei Chen

School of Environment and Materials Engineering, College of Engineering, Shanghai Polytechnic University, Shanghai, 201209, China
lfchen@sspu.edu.cn

Mingzhu Wang

School of Environment and Materials Engineering, College of Engineering, Shanghai Polytechnic University, Shanghai, 201209, China
1043922665@qq.com

Huaqing Xie

School of Environment and Materials Engineering, College of Engineering, Shanghai Polytechnic University, Shanghai, 201209, China
hqxie@sspu.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4036796 History: Received January 06, 2017; Revised March 21, 2017

Abstract

Graphene nanoplatelets (GNPs) have excellent thermal conductivity. It can significantly improve the heat-conducting property of epoxy resin (EP) matrix. In this paper, the GNPs/EP composites were successfully prepared by using ultrasonication and the cast molding method. The prepared GNPs/EP composites were systematically characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and thermal conductivity analyzer. Some factors affecting the thermal transfer performance of the composites were discussed. The defoamation has great influence on the thermal conductivity of composite. There is a nearly linear relationship between the mass fraction and the thermal conductivity of composite when the mass fraction of GNPs is below 4.3%. The results show that when the mass fraction of GNPs is 4.3% with crushing time of 2s, the thermal conductivity of GNPs/EP composite is up to 0.99 W/m?K. The thermal conductivity is increased by 9.0% compared with that without pulverization treatment. When it is ground three times, the thermal conductivity of composite reaches the maximum (1.06W/m?K) and it is increased by 307.7% compared with that of epoxy resin matrix.

Copyright (c) 2017 by ASME
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