Effect of Silica Modification on Charge Trapping Behavior of PP blend/Silica Nanocomposites

Amirhossein Mahtabani, Xiaozhen He, Ilkka Rytöluoto, Kari Lahti, Mika Paajanen, Eetta Saarimäki, Rafal Anyszka, Wilma Dierkes, Anke Blume

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

    2 Citations (Scopus)

    Abstract

    Various dielectric nanocomposite materials are studied in the frame of the European Commission funded project GRIDABLE. This project has the aim to develop DC cable extruded insulation and medium and low voltage DC capacitor films exhibiting enhanced performance with respect to presently used materials. The nanocomposites intended for cable applications are based on polypropylene (PP) blends filled with surface modified nano-silica particles. The surface modification is carried out via the state-of-the-art solution method using a polar silane as the modifying agent. Thermally Stimulated Depolarization Current (TSDC) measurements were carried out in order to study the charge trapping behavior of the nanocomposite samples. TSDC results indicate that the addition of the treated nano-silica, for most cases, reduces the density of the deep traps significantly. While more detailed studies are necessary, these results imply that the depth and the density of the deep trap states is profoundly influenced by the level of the silica modification i.e. the amount of the grafted silane on the silica surface.
    Original languageEnglish
    Title of host publication2nd International Conference on Electrical Materials and Power Equipment, ICEMPE 2019
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages241-245
    Number of pages5
    ISBN (Electronic)978-1-5386-8434-4
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA4 Article in a conference publication
    Event2nd International Conference on Electrical Materials and Power Equipment, ICEMPE - Guangzhou, China
    Duration: 7 Apr 201910 Apr 2019

    Conference

    Conference2nd International Conference on Electrical Materials and Power Equipment, ICEMPE
    Abbreviated titleICEMPE
    CountryChina
    CityGuangzhou
    Period7/04/1910/04/19

    Keywords

    • Silica surface modification
    • PP blend/Silica dielectric nanocomposites
    • Charge trapping properties
    • TSDC
    • High voltage cable insulation

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