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

页码：6 / 10

页数：5

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