Effect of the addition of milled carbon fiber as a secondary filler on the electrical conductivity of graphite/epoxy composites for electrical conductive material

Mohd Yusuf Zakaria, Abu Bakar Sulong, Jaafar Sahari, Hendra Suherman

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

In this work, carbon composite bipolar plates consisting of synthetic graphite and milled carbon fibers as a conductive filler and epoxy as a polymer matrix developed using compression molding is described. The highest electrical conductivity obtained from the described material is 69.8 S/cm for the in-plane conductivity and 50.34 S/cm for the through-plane conductivity for the composite containing 2 wt.% carbon fiber (CF) with 80 wt.% filler loading. This value is 30% greater than the electrical conductivity of a typical graphite/epoxy composite with 80 wt.% filler loading, which is 53 S/cm for the in-plane conductivity and 40 S/cm for the through-plane conductivity. The flexural strength is increased to 36.28 MPa compared to a single filler system, which is approximately 25.22 MPa. This study also found that the General Effective Media (GEM) model was able to predict the in-plane and through-plane electrical conductivities for single filler and multiple filler composites.

Original languageEnglish
Pages (from-to)75-80
Number of pages6
JournalComposites Part B: Engineering
Volume83
DOIs
Publication statusPublished - 15 Dec 2015

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Graphite epoxy composites
Conductive materials
Carbon fibers
Fillers
Composite materials
Artificial graphite
Compression molding
Polymer matrix
Bending strength
Electric Conductivity
carbon fiber
Carbon

Keywords

  • A. Polymer-matrix composites (PMCs)
  • B. Electrical properties
  • C. Computational modeling
  • D. Mechanical testing

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

Cite this

Effect of the addition of milled carbon fiber as a secondary filler on the electrical conductivity of graphite/epoxy composites for electrical conductive material. / Zakaria, Mohd Yusuf; Sulong, Abu Bakar; Sahari, Jaafar; Suherman, Hendra.

In: Composites Part B: Engineering, Vol. 83, 15.12.2015, p. 75-80.

Research output: Contribution to journalArticle

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