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Electret-thermal analysis of dielectric objects
https://doi.org/10.26896/1028-6861-2022-88-8-27-34
Abstract
The development of methodological tools for studying the most possible range of the objects of dielectric nature is an urgent task. We present the results of studying dielectric objects by the method of electret-thermal analysis (ETA). Electrophysical changes in dielectric objects were studied taking into account polarization effects and electret state. The ETA data of ultrahigh molecular polyethylene, polyvinyl alcohol, human blood, synovial fluid, starch-containing polymer biodegradable compositions, chitosan, and vegetable oils are presented. Analysis of the spectra of thermally stimulated currents obtained during tests revealed that ETA method is characterized by high information content regarding various dielectric objects.
Thermally stimulated current response makes it possible to identify and interpret phase phenomena occurring upon heating of the objects, including those accompanied by electrophysical processes of transfer and relaxation of the electret charge. The results obtained can be used to improve the methodology for analyzing electrophysical changes in dielectric objects.
About the Authors
S. V. Zotov
V. A. Belyi Metal-Polymer Research Institute, National Academy of Sciences of Belarus
Belarus
Belarus
Sergey V. Zotov
32a, ul. Kirova, Gomel, 246050
Zh. V. Kadolich
P. O. Sukhoi Gomel State Technical University
Belarus
Belarus
Zhanna V. Kadolich
48, prosp. Octyabrya, Gomel, 246746
E. A. Tsvetkova
V. A. Belyi Metal-Polymer Research Institute, National Academy of Sciences of Belarus
Belarus
Belarus
Elena A. Tsvetkova
32a, ul. Kirova, Gomel, 246050
A. G. Kravtsov
Department of Physical and Technical Sciences, National Academy of Sciences of Belarus
Belarus
Belarus
Alexandr G. Kravtsov
66, prosp. Nezavisimosti, Minsk, 220072
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Review
For citations:
Zotov S.V., Kadolich Zh.V., Tsvetkova E.A., Kravtsov A.G. Electret-thermal analysis of dielectric objects. Industrial laboratory. Diagnostics of materials. 2022;88(8):27-34. (In Russ.) https://doi.org/10.26896/1028-6861-2022-88-8-27-34
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