Comparison of the effects of nanofiller materials on the dielectric properties of epoxy nanocomposites

J. Katayama*, N. Fuse, M. Kozako, T. Tanaka, Y. Ohki

*この研究の対応する著者

研究成果: Conference article査読

4 被引用数 (Scopus)

抄録

Composites of organic polymers and well-dispersed nm-sized inorganic fillers, called polymer nanocomposites (NCs), have been attracting much attention as new electrical insulating materials. In this paper, experimental results on the typical dielectric properties, namely, complex permittivity ε( r and ε r"), conductivity, and thermally stimulated depolarization current (TSDC) are evaluated for bisphenol-A epoxy resin and its NCs with boehmite alumina, titania, and silica. The increase in ε r and ε r" and the magnitudes of the TSDC peaks as well as the increase in conductivity appear more significantly in the NCs with boehmite alumina and titania and less significantly in the NCs with silica than in epoxy resin. This indicates that the silica nanofillers give the best results as far as these properties are concerned. The suppression of molecular motion by the addition of nanofillers seems to work effectively in the case of silica, while the nanofiller addition is likely to accelerate the motion of ionic carriers and/or that of dipoles in the case of boehmite alumina and titania.

本文言語English
論文番号6232660
ページ(範囲)318-321
ページ数4
ジャーナルAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
DOI
出版ステータスPublished - 2011 12 1
イベント2011 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2011 - Cancun, Mexico
継続期間: 2011 10 162011 10 19

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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