Space charge distributions in two-layered LDPE/MgO nanocomposites exhibiting superior insulation performance

Etsu Kanegae, Kazuyuki Ishimoto, Toshikatsu Tanaka, Yoshimichi Ohki, Yoitsu Sekiguchi, Yoshinao Murata, Chandupatla Chakradhar Reddy

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    Recently polymer nanocomposite has been attracting much attention as an emerging insulating material. In this paper, we measured space charge distributions for two-layered dielectric films consisting of certain combination of low-density polyethylene (LDPE) and its nanocomposite with magnesia nano-fillers during the application of dc electric field of 25 kV/mm or 100 kV/mm. Both at room temperature and 50 °C, space charge is formed at the interface of two different materials to maintain the continuity of current when the electric field is 25 kV/mm, while packet-like charge appears only in the LDPE when the electric field is 100 kV/mm. These phenomena are explained by assuming that the nano-fillers effectively suppress the increase in conductivity induced by the high electric field.

    Original languageEnglish
    JournalIEEJ Transactions on Fundamentals and Materials
    Volume130
    Issue number4
    Publication statusPublished - 2010

    Fingerprint

    Charge distribution
    Low density polyethylenes
    Electric space charge
    Insulation
    Nanocomposites
    Electric fields
    Fillers
    Dielectric films
    Insulating materials
    Magnesia
    Polymers
    Temperature

    Keywords

    • Conduction current
    • Insulating materials
    • Low-density polyethylene
    • Polymer nanocomposite
    • Space charge
    • Two-layered dielectrics

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Space charge distributions in two-layered LDPE/MgO nanocomposites exhibiting superior insulation performance. / Kanegae, Etsu; Ishimoto, Kazuyuki; Tanaka, Toshikatsu; Ohki, Yoshimichi; Sekiguchi, Yoitsu; Murata, Yoshinao; Reddy, Chandupatla Chakradhar.

    In: IEEJ Transactions on Fundamentals and Materials, Vol. 130, No. 4, 2010.

    Research output: Contribution to journalArticle

    Kanegae, Etsu ; Ishimoto, Kazuyuki ; Tanaka, Toshikatsu ; Ohki, Yoshimichi ; Sekiguchi, Yoitsu ; Murata, Yoshinao ; Reddy, Chandupatla Chakradhar. / Space charge distributions in two-layered LDPE/MgO nanocomposites exhibiting superior insulation performance. In: IEEJ Transactions on Fundamentals and Materials. 2010 ; Vol. 130, No. 4.
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    AU - Sekiguchi, Yoitsu

    AU - Murata, Yoshinao

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