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Abstract

The electrical properties of prepared polystyrene/oil shale composites with different concentration: 0, 5, 10, 20, 30 wt. % of oil shale were studied in this paper, under various measuring conditions including filler content and applied electric field frequency. The dependence of AC-electrical properties of polystyrene/oil shale composites on filler content and frequency were studied using the AC impedance technique. The impedance measurements were performed in the frequency range (100 kHz - 1.5 MHz) at room temperature (30oC). Impedance, dielectric constant and AC-conductivity showed frequency and filler content dependencies. The relaxation time were determined for different filler concentrations .The study includes application of some models to explain the observed results. The universal power law of the AC conductivity behaviour is satisfied for different concentration.