Charge behavior of epoxy/silica nanocomposites under AC high fields

Yutaro Watanabe*, Kazuyuki Tohyama, Masahiro Kozako, Shohei Kawano, Koji Ito, Hiroaki Miyake, Yasuhiro Tanaka, Yuichi Hirose, Yoshimichi Ohki

*この研究の対応する著者

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

If a power semiconductor module becomes compact to enhance its wiring density, the electric field at its insulation part should become high. This in turn causes the increase in heat generation per unit volume. Therefore, epoxy resin with high thermal conductivity, a low thermal expansion rate and good anti-aging performance is required. In this regard, we made nano-micro composites (NMCs), namely epoxy resin samples containing both nano-silica filler having high insulating performance and micro-alumina filler having a high thermal conductivity, and observed electroluminescence (EL) and dissipation current waveforms under AC high electric fields for these NMCs simultaneously in order to examine the effects of addition of fillers with different sizes. As a result, it was found that both dissipation current and the number of EL pulses depend on the sample thickness. It was also found that the addition of alumina-micro filler alone into epoxy resin increases the number of EL pulses compared to the neat epoxy and that the NMC shows improved insulating properties. It was also confirmed that the relative permittivity is around 4 for the neat resin and the NMCs, independent of the thickness and the type of fillers.

本文言語English
ホスト出版物のタイトルICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics
ページ892-895
ページ数4
DOI
出版ステータスPublished - 2013 12 1
イベントICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics - Bologna, Italy
継続期間: 2013 6 302013 7 4

出版物シリーズ

名前Proceedings of IEEE International Conference on Solid Dielectrics, ICSD
ISSN(印刷版)1553-5282
ISSN(電子版)2159-1687

Other

OtherICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics
国/地域Italy
CityBologna
Period13/6/3013/7/4

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 電子材料、光学材料、および磁性材料
  • 材料化学
  • 凝縮系物理学

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