Advanced Composite Materials

The Korean Society for Composite Materials (한국복합재료학회)
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Conductivity stability of carbon nanofiber/unsaturated polyester nanocomposites

  • Wu, Shi-Hong (Division of Advanced Fibro-Science, Kyoto Institute of Technology) ;
  • Natsuki, Toshiaki (Dept. of Functional Machinery and Mechanics, Shinshu University) ;
  • Kurashiki, Ken (Division of Advanced Fibro-Science, Kyoto Institute of Technology) ;
  • Ni, Qing-Qing (Dept. of Functional Machinery and Mechanics, Shinshu University) ;
  • Iwamoto, Masaharu (Division of Advanced Fibro-Science, Kyoto Institute of Technology) ;
  • Fujii, Yoshimichi (Division of Advanced Fibro-Science, Kyoto Institute of Technology)
  • Published : 2007.09.01
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Abstract

Carbon nanofiber (CNF)/unsaturated polyester resin (UPR) was prepared by a solvent evaporation method, and the temperature dependency of electrical conductivity was investigated. The CNF/UPR composites had quite a low percolation threshold due to CNF having a larger aspect ratio and being well dispersed in the UPR matrix. The positive temperature coefficient (PTC) was found in the CNF/UPR composites and it showed stronger effect around the percolation threshold. The electrical resistance of the CNF/UPR composites decreased and had lower temperature dependency with increasing numbers of thermal cycles.

Keywords

References

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