TY - GEN
T1 - Exceptional electrical conductivity and fracture resistance of 3d interconnected graphene foam/epoxy composites
AU - Jia, J.
AU - Sun, X.
AU - Lin, X.
AU - Shen, X.
AU - Mai, Y. W.
AU - Kim, J. K.
PY - 2014
Y1 - 2014
N2 - Cellular-structured graphene foam (GF)/epoxy composites are prepared based on a three-step fabrication process involving infiltration of epoxy into the porous GF. The 3D interconnected graphene network serves as fast channels for charge carriers, giving rise to a remarkable electrical conductivity of the composite, 3 S/cm, with only 0.2 wt% GF. The corresponding flexural modulus and strength increase by 53% and 38%, respectively, whereas the glass transition temperature increases by a notable 31°C, compared to the solid neat epoxy. The GF/epoxy composites with 0.1 wt% GF also deliver an excellent fracture toughness of 1.78 MPam1/2, 34% and 70% enhancements against their 'porous' epoxy and solid epoxy counterparts, respectively.
AB - Cellular-structured graphene foam (GF)/epoxy composites are prepared based on a three-step fabrication process involving infiltration of epoxy into the porous GF. The 3D interconnected graphene network serves as fast channels for charge carriers, giving rise to a remarkable electrical conductivity of the composite, 3 S/cm, with only 0.2 wt% GF. The corresponding flexural modulus and strength increase by 53% and 38%, respectively, whereas the glass transition temperature increases by a notable 31°C, compared to the solid neat epoxy. The GF/epoxy composites with 0.1 wt% GF also deliver an excellent fracture toughness of 1.78 MPam1/2, 34% and 70% enhancements against their 'porous' epoxy and solid epoxy counterparts, respectively.
KW - Electrical conductivity
KW - Epoxy-matrix composites
KW - Graphene foams
KW - Mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=84915749439&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84915749439
T3 - 16th European Conference on Composite Materials, ECCM 2014
BT - 16th European Conference on Composite Materials, ECCM 2014
T2 - 16th European Conference on Composite Materials, ECCM 2014
Y2 - 22 June 2014 through 26 June 2014
ER -