Abstract
UDC 537.312; 539.122.04
DOI https://doi.org/10.5281/zenodo.1345704
Under study was the effect of gamma irradiation on the dielectric properties of polymer composites based on the polyvinylidene fluoride copolymer with tetrafluoroethylene P(VDF-TePE) with silicon nanoparticles (nano-Si). It is shown that the introduction of nanosilicon particles into the polymer matrix lowers the mobility of polymer chain segments and, accordingly, changes the relaxation characteristics of the dielectric properties of the composite. The observed changes in the initial and irradiated composites (P(VDF-TePE)/nano-Si) in the electrophysical properties (ε, tgδ and lgρ) are determined by the ratio of the crosslinking and degradation processes in the polymer matrix and of interphase boundary the polymer-nanoparticles and by the change in the conductivity of the filler after irradiation.
Keywords: P(VDF-TePE), nano-Si, polymer composite, dielectric properties, gamma irradiation, mobility, interphase boundary.