Exceptional electrical conductivity and fracture resistance of 3d interconnected graphene foam/epoxy composites

J. Jia, X. Sun, X. Lin, X. Shen, Y. W. Mai, J. K. Kim

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication16th European Conference on Composite Materials, ECCM 2014
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Electronic)9780000000002
Publication statusPublished - Jun 2014
Externally publishedYes
Event16th European Conference on Composite Materials, ECCM 2014 - Seville, Spain
Duration: 22 Jun 201426 Jun 2014

Publication series

Name16th European Conference on Composite Materials, ECCM 2014

Conference

Conference16th European Conference on Composite Materials, ECCM 2014
Country/TerritorySpain
CitySeville
Period22/06/1426/06/14

Keywords

  • Electrical conductivity
  • Epoxy-matrix composites
  • Graphene foams
  • Mechanical properties

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this