Author/Authors :
Chatterjee، نويسنده , , S. and Wang، نويسنده , , J.W. and Kuo، نويسنده , , W.S. and Tai، نويسنده , , N.H. and Salzmann، نويسنده , , C. and Li، نويسنده , , W.L. and Hollertz، نويسنده , , R. and Nüesch، نويسنده , , F.A. and Chu، نويسنده , , B.T.T.، نويسنده ,
Abstract :
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.
