A study of charge relaxation in corona electrets based on P(VDF-TFE) copolymer
DOI:
https://doi.org/10.33910/2687-153X-2022-3-3-104-108Keywords:
electret state, polyvinylidene fluoride, tetrafluoroethylene, piezoelectric effect, TSD spectroscopy, weak regularization methodAbstract
Using the method of thermally stimulated depolarization currents, this paper explains the polarization in the field of corona discharge of polyvinylidene fluoride-tetrafluoroethylene (P(VDF-TFE)) copolymer films. It has been determined that to achieve the best electret properties of PVDF, polarization must be carried out in the field of negative corona discharge. It was found that the studied objects have two types of polar structures different in the activation energy and the frequency factor. Using a mix of traditional and numerical methods to analyze the peaks of the thermally stimulated depolarization currents, the parameters of the polar structures of both types found in P(VDF-TFE) were determined.
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Copyright (c) 2022 Yuriy A. Gorokhovatsky, Yulia I. Sotova, Dmitry E. Temnov
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