Electret effect in compositions of trifluorochloroethylene-vinylidene fluoride random copolymer and graphite has been studied. It was shown that addition of more than 4 vol.% graphite reduces electret potential difference of the compositions owing to growth of their electrical conductivity. Slight increase of composition electret performances when filled with 2 vol. % graphite occurs due to appearance of new trapping levels of charge carriers at copolymer/filler interphase boundary.
фторопласт, графит, коронный разряд, электрет, fluoropolymer, graphite, corona discharge, electret
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