Evaluation of dielectric properties in polypropylene/clay nanocomposites

N. Fuse, T. Tanaka, Yoshimichi Ohki

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

    9 Citations (Scopus)

    Abstract

    Effects of nanofiller addition on four typical dielectric properties, namely permittivity εr′, dielectric loss factor εr″, space charge accumulation, and partial discharge (PD) resistance were evaluated for polypropylene (PP) and its nanocomposites (NCs) with nanoclay. While εr′ and εr″ are almost independent of temperature and frequency in the base unfilled PP, they are highly dependent on the two parameters in the two NCs. Namely, εr′ increases significantly at temperatures above 20°C and the frequency spectrum of εr″; shows at least one temperature-dependent peak. Furthermore, space charge appears abundantly in the two NCs compared to the base PP. These results indicate that plenty of mobile carriers and/or dipoles, probably resulted from the manufacturing process, remain in the two NCs. Notwithstanding the above-mentioned 'inferior' insulating properties, the two NCs have an improved PD resistance compared with the base PP. Namely, the erosion depth on the surface induced by PDs is the smallest in the NC with the largest filler content, while it is the largest in the base PP. Such differences in the effects of nanofillers on different insulating properties are attributable to the fact that nanofillers can improve the PD resistance simply by their presence, while the chemicals needed for uniform dispersion of nanofillers may sometimes increase the permittivity and abundance of charge carriers.

    Original languageEnglish
    Title of host publicationAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
    Pages507-510
    Number of pages4
    DOIs
    Publication statusPublished - 2009
    Event2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP - Virginia Beach, VA
    Duration: 2009 Oct 182009 Oct 21

    Other

    Other2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
    CityVirginia Beach, VA
    Period09/10/1809/10/21

    Fingerprint

    Polypropylenes
    Dielectric properties
    Nanocomposites
    Clay
    Partial discharges
    Electric space charge
    Permittivity
    Dielectric losses
    Charge carriers
    Temperature
    clay
    Fillers
    Erosion

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

    Cite this

    Fuse, N., Tanaka, T., & Ohki, Y. (2009). Evaluation of dielectric properties in polypropylene/clay nanocomposites. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP (pp. 507-510). [5377891] https://doi.org/10.1109/CEIDP.2009.5377891

    Evaluation of dielectric properties in polypropylene/clay nanocomposites. / Fuse, N.; Tanaka, T.; Ohki, Yoshimichi.

    Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2009. p. 507-510 5377891.

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

    Fuse, N, Tanaka, T & Ohki, Y 2009, Evaluation of dielectric properties in polypropylene/clay nanocomposites. in Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP., 5377891, pp. 507-510, 2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP, Virginia Beach, VA, 09/10/18. https://doi.org/10.1109/CEIDP.2009.5377891
    Fuse N, Tanaka T, Ohki Y. Evaluation of dielectric properties in polypropylene/clay nanocomposites. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2009. p. 507-510. 5377891 https://doi.org/10.1109/CEIDP.2009.5377891
    Fuse, N. ; Tanaka, T. ; Ohki, Yoshimichi. / Evaluation of dielectric properties in polypropylene/clay nanocomposites. Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2009. pp. 507-510
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