Evaluation of dielectric behavior of bio-waste reinforced polymer composite

Abstract

Coir dust reinforced polymer composites are prepared with epoxy resin as the matrix. The dielectric parameters (relative permittivity "0, dielectric loss "00), AC conductivity , and resistivity of pure epoxy resin and compositeswith different weight percent of coir dust were obtained in a frequency range of 100 Hz to 1 MHz, and temperature range of 30–150C. The experimental results show that "0, "00, and are increased and is decreased with the addition of coir dust in epoxy resin. It is also observed that the dielectrical properties of the composites showed a strong dependence onfrequency and temperature. The "0 and "00 increases with increasing temperature because of greater movement of the dipole molecular chains and decreases with increasing frequency due to the orientation polarization. The conductivity ofthe composite is increased, and the resistivity of composite is decreased with increasing frequency.