The study of curves of the transient current in polytetrafluoroethylene by means Fourier analysis
DOI:
https://doi.org/10.31489/2021No1/75-79Keywords:
transient current curves, electrophysical properties, polytetrafluoroethylene, ionizing irradiation, Fourier analysis.Abstract
Experimental transition current curves for polytetrafluoroethylene after exposure to high-energy ionizing radiation are obtained. The transient current curves in irradiated polytetrafluoroethylene are analyzed based on the discrete Fourier transform. It is shown that there is an intense maximum of dielectric absorption in the infra-low frequency region. This maximum is characterized by abnormally large values of the dielectric increment, permittivity, and the dielectric loss factor. It is concluded that the volume polarization of the irradiated polytetrafluoroethylene is uniform. The polarization observed in this frequency range is associated with the activation of migration of trapped charge carriers within microscopic regions.
References
"1. Milinchuk V. K. Radiation resistance of organic materials. Moscow, Energoatomizdat, 1986, 171p. [in Russian].
Khatipov S.A. Radiation electrical conductivity of polymers. Chapter 1.12 of the collection «Model of space: The impact of the space environment on the materials and equipment of spacecraft». Moscow, 2007, pp. 361 – 376. [in Russian].
Khatipov S.A., Tsvelev V.M., Alekseev S.V. Radiation resistance of polymers in the conditions of outer space. Chapter 1.15 of the collection «Model of space: The impact of the space environment on the materials and equipment of spacecraft». Moscow, 2007, pp. 414-436. [in Russian].
Obvintsev A.Yu. and others. The effect of gamma radiation on the surface and bulk properties of polytetrafluoroethylene. The surface. X-ray, synchrotron, and neutron studies. 2017, No. 9, pp. 52-60. [in Russian]
Zhutaeva Yu.R., Khatipov S.A. Maxwell-Wagner polarizationin polytetraflyoroethylene sudjected to the impact of ionizing radiation. Proc. of the Intern. Simposium «Physics and Chemistry of processes, oriented toward development of new high technologies, materials and equipment». Chernogolovka, 2007, pp. 317-322.
Tyutnev A. P., Arkhipov V. I., Nikitenko V. R., Sadovnichy D. N. On the nature of non-Langevin recombination of charge carriers in polymers. Chemical physics. 1996, vol. 15, No. 3, pp. 91-99. [in Russian].
Malyshkina I.A., Burmistrov S.E., Gavrilova N.D. Dielectric spectroscopy of sulfonated polytetrafluoroethylene in the swollen state. High-molecular compounds. 2005, B, Vol.47, No. 8, pp. 1563-1568. [in Russian].
Klein R.J., Cole S.M., Belcher M.E., et al. Radiation tolerance in polymeric dielectrics by small molecule doping. Part II: Thermodynamic and kinetic parameters. POLYMER, 2008, Vol. 49, p.5549-5563.
Khatipov S. A., Turdybekov K. M., Edrisov A. T., Milinchuk V. K. Electrification of polymer films under the influence of vacuum ultraviolet light. High-energy chemistry. 1995, Vol. 29, No.3, pp. 184-186. [in Russian].
Sergeeva A. E. Polarization and spatial charge in ferroelectric polymers. Odessa: TES, 2014, 347 p. [in Russian].
Lushcheikin G. A. Methods for studying the electrical properties of polymers. Moscow: Khimiya, 1988, 160 p. [in Russian].
Sazhin B. I. Electrical properties of polymers. Leningrad, Chemistry, 1986, 224 p. [in Russian].
Lushcheikin G. A. Polymer electretes. Moscow, 2008, 180 p. [in Russian].
Sessler G. M. Electrets. Springer-Verlag, Berlin. 2003, 437 р.
"
