Electrophysical properties of polymer composites penton-silver iodide system in 8-12 GHz frequency region

Abstract

The heat field influence on electrophysical properties of polymer composites of the penton — dispersed silver iodide (Agl) system at volume filling from 0 to 100 % have been studied in 8-12 GHz frequency range. It has been shown that both real (ξ') and imaginary (ξ") complex dielectric permittivity components below the temperature of Agl dielectric-ionic phase transition (Tc = 420 K) depend on the content of the system components, and the imaginary component depends also on the polymer supermolecular structure. After Agl transition into ionic state, a percolation transition is observed in concentration dependences at critical percolation threshold about 30 vol.% filler content and extreme maxima about C = 50%. The ξ' and ξ" values exceed almost in wice the corresponding Agl characteristics. The results are discussed within the frame structure model.