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Dielectric properties and electric breakdown strength of a subpercolative composite of carbon black in thermoplastic copolymer

  • We investigate the dielectric properties and electric breakdown strength of subpercolative composites of conductive carbon black particles in a rubber insulating matrix. A significant increase in the permittivity in the vicinity of the insulator to conductor transition was observed, with relatively low increases in dielectric loss; however, a rapid decrease in electric breakdown strength was inevitable. A steplike feature was ascribed to agglomeration effects. The low ultimate values of the electric field strength of such composites appear to prohibit practical use.

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Author:Hristiyan Stoyanov, Denis N. Mc Carthy, Matthias Kollosche, Guggi Kofod
Document Type:Article
Year of first Publication:2009
Year of Completion:2009
Release Date:2017/03/25
Source:Applied physics letters. - ISSN 0003-6951. - 94 (2009), 23, Art. 232905
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer Review:Referiert