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Mechanical reinforcement and thermal conductivity in expanded graphene nanoplatelets reinforced epoxy composites
Swiss Federal Institute for Materials Science and Technology, Empa.
National Cheng Kung University, Taiwan.
Feng Chia University, Taiwan.
National Tsing Hua University, Hsinchu, Taiwan.
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2012 (English)In: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 531, 6-10 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2012. Vol. 531, 6-10 p.
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Other Chemistry Topics
URN: urn:nbn:se:kth:diva-160159DOI: 10.1016/j.cplett.2012.02.006ISI: 000301931800002ScopusID: 2-s2.0-84862821580OAI: diva2:788975

QC 20150218

Available from: 2015-02-17 Created: 2015-02-17 Last updated: 2015-02-18Bibliographically approved

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