Effect of low amount of nanosilica on dielectric properties of polypropylene

M. Takala, B. Sonerud, H. Ranta, Jani Pelto, S. Ahonen, M. Pettersson, S. Kannus

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

    4 Citations (Scopus)

    Abstract

    This paper presents the results of the dielectric properties measurements conducted on Silica-Polypropylene (PP) nanocomposites. According to prior investigations by the authors silica nanoparticles have improved the performance of the dielectric material considering capacitor applications. Especially breakdown strengths with ac and dc voltages and resistance against surface degradation have increased. The relative permittivity and dielectric losses have also been comparable to reference PP. In this paper the results of the dielectric measurements conducted on composites with 1-2 wt-% silica are compared with reference PP. Silica dispersion in PP was confirmed with transmission electron microscopy (TEM). Weibull analysis was applied to the breakdown strength measurement results with dc voltage. Capacitance and loss factor measurements were conducted as a function of temperature to study thermal behavior. The measurements were conducted at the high voltage laboratories of Tampere University of Technology and Chalmers University of Technology. Statistical analysis was applied to the results to determine the significance of the differences between the materials. (26 refs.)
    Original languageEnglish
    Title of host publicationProceedings of the 10th IEEE International Conference on Solid Dielectrics, ICSD 2010
    Place of PublicationPiscataway, NJ, USA
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Number of pages5
    ISBN (Electronic)978-1-4244-7944-3
    ISBN (Print)978-1-4244-7945-0
    DOIs
    Publication statusPublished - 2010
    MoE publication typeA4 Article in a conference publication
    Event10th IEEE International Conference on Solid Dielectrics, ICSD 2010 - Potsdam, Germany
    Duration: 4 Jul 20109 Jul 2010

    Conference

    Conference10th IEEE International Conference on Solid Dielectrics, ICSD 2010
    Abbreviated titleICSD 2010
    CountryGermany
    CityPotsdam
    Period4/07/109/07/10

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