Effect of Orientation Stretching Rate on Piezoelectric Properties in Corona Electrets Based on Vinylidene Fluoride--Tetrafluoroethylene Copolymer
Gorokhovatsky Yu. A. 1, Temnov D. E. 1, Sotova Yu. I. 1
1Herzen State Pedagogical University of Russia, St. Petersburg, Russia
Email: juliasotova1992@mail.ru

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In this paper, the effect of the orientational stretching rate on the piezoelectric properties and structure of the vinylidene fluoride-tetrafluoroethylene P(VDF-TFE) copolymer was studied. A relationship in the formation of the electret and piezoelectric states in P(VDF-TFE) has been established. The parameters of electrically active defects involved in the polarization process and determining the stability of the electret and, as a consequence, the piezoelectric states in P(VDF-TFE) are calculated. Keywords: electret state, polyvinylidene fluoride, tetrafluoroethylene, piezoelectric effect, thermal activation spectroscopy.
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