Effect of small additions of carbon nanotubes on the electrical conductivity of polyurethane elastomer

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• 作者：G. F. Novikov ; E. V. Rabenok ; Ya. I. Estrin…
• 关键词：polyurethane elastomer ; single ; walled carbon nanotubes ; physicomechanical characteristics ; dielectric properties ; electrical conductivity
• 刊名：Russian Journal of Physical Chemistry A, Focus on Chemistry
• 出版年：2014
• 出版时间：October 2014
• 年：2014
• 卷：88
• 期：10
• 页码：1790-1794
• 全文大小：326 KB
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• 作者单位：G. F. Novikov (1)
  E. V. Rabenok (1)
  Ya. I. Estrin (1)
  Yu. A. Ol’hov (1)
  E. R. Badamshina (1)
  
  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia
  
• ISSN：1531-863X

文摘

The effect of small (0.002-.018 wt %) additions of single-walled carbon nanotubes on the dielectric properties and electrical conductivity of crosslinked polyurethane elastomer is studied in the temperature range of 133-53 K and the 10? to 105 Hz range of electric field frequencies. It is shown that the dependence of direct current conductivity σ dc on temperature deviates significantly from the Arrhenius dependence and is described by the Vogel-Fulcher-Tamman equation σ dc = σ dc0exp{?em class="a-plus-plus">DT 0/(T ?T 0)}, where T 0 is the Vogel temperature and D is the strength parameter. A correlation is found between the nonmonotonic dependences of the glass transition temperature (T g), D parameter, and σ dc and the concentration of nanotubes with earlier results for their effects on the physicomechanical characteristics (strength and Young’s modulus) of these systems.