Piezoelectric and pyroelectric polymer film and process for preparing same
AssigneesRikagauku Kenkyusho, Kureha Kagaku Kogyo Kabushiki Kaisha
InventorsEiichi Fukada, Takeo Furukawa, Munehiro Date, Toshiaki Takamatsu, Ken'ichi Nakamura
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Abstract
A process for preparing polyvinylidene fluoride type (PVDF) films having highly stable piezoelectricity and pyroelectricity, by stretching PVDF films, while causing corona discharge, across the electric field formed by discharging, to effect thereby to polarization of film.
Claims9
A process for preparing a piezoelectric pyroelectric film or highpolymer comprising stretching a polyvinylidene fluoride type film, disposed between the electrodes for discharge, while causing corona discharge between said electrodes, across the electric field formed by said discharge, to effect thereby the polarization of said polymeric film.
A piezoelectric pyroelectric polymeric film prepared by disposing a polyvinylidene fluoride type film between discharging electrodes at least one of which comprising electrode having a configuration of a pointed top, stretching said polymeric film in transverse to an electric field resulted by continuing corona discharging generated between said electrodes.
Dependencies are inferred from the claim text.