INFLUENCE OF ELECTROTHERMAL DISCHARGE CRYSTALLIZATION ON THE ELECTRET, PIEZOELECTRIC AND THERMOPHYSICAL PROPERTIES OF COMPOSITE CONVERTERS

Abstract

The article shows that under the same polarization conditions, the value of the depolarized current over the entire TSD spectrum (thermally stimulated depolarization) for a composite crystallized by electric discharge and temperature (electrothermal discharge crystallization) is noticeably larger than for thermocrystallized composites. The thermal conductivity of heterogeneous polymer composite systems is analyzed based on the phenomenological theories of structural subsystems. İt is assumed that thermal conductivity is due to a complex of energy processes observed during the transfer of energy from one phase to another with the speed of sound. Given the specifics of the heat-conducting composites while maintaining high electrical parameters – we have as far as possible studied the concentration dependences of the thermal conductivity of composites based on polymers of different chemical and physical structures – nitrides and carbides. Taking into account the mechanisms of thermal conductivity and electrical conductivity, their concentration dependences are analyzed in order to identify a possible relationship between them. As in the case thermal conductivity, we assume that the electrical conductivity is due to the complex of energy processes observed during charge transfer from one particle of the filler to another through the dielectric layer between them by the hopping mechanism.