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Journal of Materials Science

, Volume 44, Issue 12, pp 3241–3247 | Cite as

Synergistic effects in network formation and electrical properties of hybrid epoxy nanocomposites containing multi-wall carbon nanotubes and carbon black

  • Jan SumflethEmail author
  • Xavier Cordobes Adroher
  • Karl Schulte
Article

Abstract

Epoxy nanocomposites including multi-wall carbon nanotubes (MWCNT) and carbon black (CB) were produced and investigated by means of electrical conductivity measurements and microscopical analysis. Varying the weight fraction of the nanoparticles, electrical percolation behaviour was studied. Due to synergistic effects in network formation and in charge transport the inclusion of both MWCNT and CB in the epoxy matrix leads to an identical electrical behaviour of this ternary nanocomposite system compared to the binary MWCNT-epoxy system. For both types of nanocomposites an electrical percolation threshold of around 0.025 wt% and 0.03 wt% was observed. Conversely, the binary CB nanocomposites exhibit a three-times higher percolation threshold of about 0.085 wt%. The difference between the binary MWCNT-epoxy and the ternary CB/MWCNT-epoxy in electrical conductivity at high filler concentrations (e.g. 0.5 wt%) turns out to be less than expected. Thus, a considerable amount of MWCNTs can be replaced by CB without changing the electrical properties.

Keywords

Carbon Black Ternary System Percolation Threshold Filler Content Conductive Filler 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The German Research Foundation (Deutsche Forschungsgemeinschaft) and its graduate school “Kunst und Technik” at the Technische Universität Hamburg-Harburg is gratefully acknowledged for financial support (DFG GRK 1006/1). The companies Degussa-Evonik® and Arkema® are acknowledged for the supply of the nanoparticles.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Jan Sumfleth
    • 1
    Email author
  • Xavier Cordobes Adroher
    • 1
  • Karl Schulte
    • 1
  1. 1.Institute of Polymers and CompositesTechnische Universität Hamburg-HarburgHamburgGermany

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