論文

査読有り
2017年2月

Electric Conductivity and Dielectric-Breakdown Behavior for Polyurethane Magnetic Elastomers

JOURNAL OF PHYSICAL CHEMISTRY B
  • Shuhei Sasaki
  • ,
  • Yuri Tsujiei
  • ,
  • Mika Kawai
  • ,
  • Tetsu Mitsumata

121
7
開始ページ
1740
終了ページ
1747
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acs.jpcb.6b12875
出版者・発行元
AMER CHEMICAL SOC

The electric-voltage dependence of the electric conductivity for cross-linked and un-cross-linked magnetic elastomers was measured at various magnetic fields, and the effect of cross-linking on the electric conductivity and the dielectric-breakdown behavior was investigated. The electric conductivity for uncross-linked elastomers at low voltages was independent of magnetic fields and the volume fraction of magnetic particles, indicating the electric conduction in the polyurethane matrix. At high voltages, the electric conductivity increased with the magnetic field, showing the electric conduction via chains of magnetic particles. On the other hand, the electric conductivity at low voltages for cross-linked elastomers with volume fractions below 0.06 was independent of the magnetic field, suggesting the electric conduction in the polyurethane matrix. At volume fractions above 0.14, the electric conductivity increased with the magnetic field, suggesting the electric conduction via chains of magnetic particles. At high voltages, the electric conductivity for cross-linked elastomers with a volume fraction of 0.02 was independent of the magnetic field, indicating the electric conduction through the polyurethane matrix. At volume fractions above 0.06, the electric conductivity suddenly increased at a critical voltage, exhibiting the dielectric breakdown at the bound layer of magnetic particles and/or the discontinuous part between chains.

リンク情報
DOI
https://doi.org/10.1021/acs.jpcb.6b12875
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000394925700027&DestApp=WOS_CPL
ID情報
  • DOI : 10.1021/acs.jpcb.6b12875
  • ISSN : 1520-6106
  • Web of Science ID : WOS:000394925700027

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