The effect of milled carbon fibre filler on electrical conductivity in highly conductive polymer composites

Nabilah Afiqah Mohd Radzuan, Mohd Yusuf Zakaria, Abu Bakar Sulong, Jaafar Sahari

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Carbon based composites are extensively used in applications such as in polymer composite bipolar plates. This study was conducted to investigate the potential of both the use of milled carbon fibre as a conductive filler in a composite and the adaption of the General Effective Media (GEM) model to predict the electrical conductivity of the polymer composite produced. Polymer composites with various loading concentrations of the conductive filler with epoxy (EP) resin were developed using the compression moulding technique. Incorporating carbon nano tube (CNT) and carbon black (CB) as secondary fillers on carbon fibre (CF) reinforces epoxy composites aided in increasing the electrical conductivity of the composites. The addition of small amounts of CNT and CB as secondary fillers in hybrid systems increased the through-plane conductivity to 40.3 S/cm and 19.9 S/cm, respectively. The high aspect ratio and small size of the CNT filled the gaps between CF as primary filler so that there was a more conductive path. These phenomena increased the electrical conductivity of the CNT/CF/EP composites to a level higher than that of the CB/CF/EP composites. The flexural strength of CF/EP also improved from 64.37 MPa to 80 MPa and 70 MPa by adding CNT and CB, respectively. The dispersion and conductive paths mechanism were also investigated using scanning electron microscopy (SEM).

Original languageEnglish
Pages (from-to)153-160
Number of pages8
JournalComposites Part B: Engineering
Volume110
DOIs
Publication statusPublished - 1 Feb 2017

Fingerprint

Carbon fibers
Fillers
Polymers
Soot
Composite materials
Carbon
Carbon black
Epoxy Resins
Electric Conductivity
carbon fiber
Compression molding
Hybrid systems
Epoxy resins
Bending strength
Aspect ratio
Scanning electron microscopy

Keywords

  • Compression moulding
  • Conductive polymer composite
  • Conductivity model
  • Mechanical testing
  • Through-plane electrical conductivity

ASJC Scopus subject areas

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

Cite this

The effect of milled carbon fibre filler on electrical conductivity in highly conductive polymer composites. / Mohd Radzuan, Nabilah Afiqah; Yusuf Zakaria, Mohd; Sulong, Abu Bakar; Sahari, Jaafar.

In: Composites Part B: Engineering, Vol. 110, 01.02.2017, p. 153-160.

Research output: Contribution to journalArticle

Mohd Radzuan, Nabilah Afiqah ; Yusuf Zakaria, Mohd ; Sulong, Abu Bakar ; Sahari, Jaafar. / The effect of milled carbon fibre filler on electrical conductivity in highly conductive polymer composites. In: Composites Part B: Engineering. 2017 ; Vol. 110. pp. 153-160.
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