Advanced Physical Research

For the first time, electret polymer composite materials have been developed with a significantly small amount of Tellurium (Te) additives, which has scientific and practical interest. It was established that the introduction of a small amount of the specified additive into HPPE increases the surface charge density of the electret, reaches a maximum at a mass fraction of Te of 0,5 wt%, and then decreases. An increase in is observed for the HPPE + 0,5 wt% Te compared to HPPE and other contents. Using thermally stimulated depolarization, an increase in the stability of the electret state of the polymer was established, which can be explained by a change in the polymer structure, the appearance of new electrically active traps, and an increase in the polymer conductivity when Te was added to the polymer matrix. Good results are observed in the study of the dependence of the specific volume electrical resistance (ρV), the dielectric loss tangent (tgδ) and the dielectric constant ε on the tellurium (Te) content at room temperature. At room temperature, the values of dielectric permittivity (ε) for HPPE and HPPE + 0,5 wt% Te decrease during electretization. With increasing temperature, ε increases when the polymer macromolecules acquire increased mobility. A relationship between the type of supramolecular structure and the properties of the polymer products was established.