Influence of low amounts of nanostructured silica and calcium carbonate fillers on the large-area dielectric breakdown performance of bi-axially oriented polypropylene

I. Rytöluoto, K. Lahti, Mikko Karttunen, Matti Koponen, S. Virtanen, M. Pettersson

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    4 Citations (Scopus)

    Abstract

    Influence of low amounts (1.0-2.0wt-%) of nanostructured silica and calcium carbonate fillers on the largearea dielectric breakdown performance of bi-axially oriented polypropylene (BOPP) is analyzed. A multi-breakdown measurement method based on the self-healing breakdown capability of metallized film is utilized for the breakdown characterization in order to cover relatively large total film areas, thus leading to results of higher relevance from the practical point-of-view. The dispersion and distribution qualities of filler particles at the nanoscale are evaluated with transmission electron microscopy (TEM) imaging. Weibull statistical analysis suggests that the breakdown distribution homogeneity can be improved with both the filler types. The 1.0wt-% silica-BOPP composite also shows a shift of the weakest points towards higher dielectric strength in comparison to the neat BOPP. However,with increasing filler content, new failure modes are introduced into the nanocomposites, hence decreasing the overall breakdown performance in the >5% breakdown probability region in comparison to the un-filled reference BOPP film.
    Original languageEnglish
    Title of host publicationProceedings
    Subtitle of host publicationIEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2014
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages655-658
    ISBN (Electronic)978-1-4799-7525-9
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA4 Article in a conference publication
    EventIEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2014 - Des Moines, United States
    Duration: 19 Oct 201422 Oct 2014

    Conference

    ConferenceIEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2014
    Abbreviated titleCEIDP 2014
    Country/TerritoryUnited States
    CityDes Moines
    Period19/10/1422/10/14

    Keywords

    • polymer nanocomposite film
    • polypropylene
    • silica
    • calcium carbonate
    • dielectric breakdown performance

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