Mechanical reinforcement and thermal conductivity in expanded graphene nanoplatelets reinforced epoxy composites

被引：305
|
作者：
Chatterjee, S. [1 ]
Wang, J. W. [2 ]
Kuo, W. S. [3 ]
Tai, N. H. [4 ]
Salzmann, C. [5 ]
Li, W. L. [2 ]
Hollertz, R. [1 ]
Nueesch, F. A. [1 ]
Chu, B. T. T. [1 ]
机构：
[1] Swiss Fed Labs Mat Sci & Technol Empa, Lab Funct Polymers, CH-8600 Dubendorf, Switzerland
[2] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan
[3] Feng Chia Univ, Dept Aerosp & Syst Engn, Taichung, Taiwan
[4] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan
[5] UCL, Dept Chem, London, England
来源：
CHEMICAL PHYSICS LETTERS | 2012年 / 531卷
基金：
瑞士国家科学基金会;
关键词：
CARBON; SCIENCE;
D O I：
10.1016/j.cplett.2012.02.006
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：
Influence of reinforcements on mechanical and thermal properties of graphene nanoplatelets/epoxy composites is investigated. Amine functionalized expanded graphene nanoplatelets (EGNPs) were dispersed within epoxy resins using high-pressure processor followed by three roll milling. Functionality on the EGNPs was confirmed with FTIR and micro-Raman spectroscopy. Bending and nano-mechanical testing was performed on the composites. Incorporation of EGNPs improved the flexural modulus and hardness of the composite and increased fracture toughness by up to 60%. Marked improvement was observed in thermal conductivity of the composites reaching 36% at 2 wt.% loading. Functionalized EGNPs exhibited significant improvements indicating favorable interaction at EGNPs/polymer interface. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：6 / 10
页数：5
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