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Enhanced thermal and electrical properties of epoxy composites reinforced with graphene nanoplatelets
Author(s) -
Wang Yi,
Yu Jinhong,
Dai Wen,
Song Yingze,
Wang Dong,
Zeng Liming,
Jiang Nan
Publication year - 2015
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22972
Subject(s) - epoxy , materials science , composite material , thermal stability , graphene , scanning electron microscope , vickers hardness test , thermal conductivity , exfoliated graphite nano platelets , composite number , microstructure , chemical engineering , nanotechnology , engineering
We reported a facile approach to fabricate graphene nanoplatelets (GNPs)/epoxy composites with a novel blend method. The influence of GNPs on the thermal and electrical properties was investigated. Compounds with different GNPs content (0–8 wt%) were mixed with a Flacktek speedmixer at a speed of 3000 rpm for 5 min. The thermal conductivity of the epoxy composites with 8 wt% GNPs was 1.181 W/m K, which is increased by 627% compared with those of the neat epoxy. It is found that the thermal stability and electrical property also have a certain degree of improvement. Scanning electron microscopy images demonstrate that the structures of the composites have a closed relationship with their properties. In addition, the incorporation of GNPs in epoxy matrix indicated excellent Vickers hardness at the low weight fractions of GNPs. POLYM. COMPOS. 36:556–565, 2015. © 2014 Society of Plastics Engineers