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

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publicationProceedings of IEEE International Conference on Solid Dielectrics, ICSD
    Pages892-895
    Number of pages4
    DOIs
    Publication statusPublished - 2013
    EventICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics - Bologna
    Duration: 2013 Jun 302013 Jul 4

    Other

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

    Fingerprint

    fillers
    Silicon Dioxide
    Fillers
    Nanocomposites
    alternating current
    nanocomposites
    Epoxy Resins
    Silica
    silicon dioxide
    Electroluminescence
    epoxy resins
    Epoxy resins
    electroluminescence
    composite materials
    Aluminum Oxide
    Composite materials
    Thermal conductivity
    Alumina
    thermal conductivity
    dissipation

    Keywords

    • ac high field
    • epoxy
    • micro-alumina
    • nano-micro composites
    • nano-silica

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Electronic, Optical and Magnetic Materials
    • Materials Chemistry
    • Condensed Matter Physics

    Cite this

    Watanabe, Y., Tohyama, K., Kozako, M., Kawano, S., Ito, K., Miyake, H., ... Ohki, Y. (2013). Charge behavior of epoxy/silica nanocomposites under AC high fields. In Proceedings of IEEE International Conference on Solid Dielectrics, ICSD (pp. 892-895). [6619853] https://doi.org/10.1109/ICSD.2013.6619853

    Charge behavior of epoxy/silica nanocomposites under AC high fields. / Watanabe, Yutaro; Tohyama, Kazuyuki; Kozako, Masahiro; Kawano, Shohei; Ito, Koji; Miyake, Hiroaki; Tanaka, Yasuhiro; Hirose, Yuichi; Ohki, Yoshimichi.

    Proceedings of IEEE International Conference on Solid Dielectrics, ICSD. 2013. p. 892-895 6619853.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Watanabe, Y, Tohyama, K, Kozako, M, Kawano, S, Ito, K, Miyake, H, Tanaka, Y, Hirose, Y & Ohki, Y 2013, Charge behavior of epoxy/silica nanocomposites under AC high fields. in Proceedings of IEEE International Conference on Solid Dielectrics, ICSD., 6619853, pp. 892-895, ICSD 2013 - Proceedings of the 2013 IEEE International Conference on Solid Dielectrics, Bologna, 13/6/30. https://doi.org/10.1109/ICSD.2013.6619853
    Watanabe Y, Tohyama K, Kozako M, Kawano S, Ito K, Miyake H et al. Charge behavior of epoxy/silica nanocomposites under AC high fields. In Proceedings of IEEE International Conference on Solid Dielectrics, ICSD. 2013. p. 892-895. 6619853 https://doi.org/10.1109/ICSD.2013.6619853
    Watanabe, Yutaro ; Tohyama, Kazuyuki ; Kozako, Masahiro ; Kawano, Shohei ; Ito, Koji ; Miyake, Hiroaki ; Tanaka, Yasuhiro ; Hirose, Yuichi ; Ohki, Yoshimichi. / Charge behavior of epoxy/silica nanocomposites under AC high fields. Proceedings of IEEE International Conference on Solid Dielectrics, ICSD. 2013. pp. 892-895
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