Dielectric Properties of Filled Composites of Epoxy Resin
Pages 455-460
Fareeda Farrukh and Shahid H. Zaidi

DOI: http://dx.doi.org/10.6000/1927-5129.2014.10.60

Published: 03 October 2014

Abstract: The addition of fillers in composite of epoxies, improves the dielectric response of the epoxies. The dielectric properties of unfilled and filled composites of epoxy resins have been studied as a function of thickness in the frequency range 10^-1 Hz to 10⁵ Hz at room temperature. The response of the unfilled samples shows that the composites behave as an insulator for all thickness. In filled composites at small thickness (0.32 mm) the response shows a loss peak in low frequency regime. The peak is broader than the Debye loss peak which is obscured by the dc conductance. At frequencies greater than ω_p the response shows a well defined power law behaviour after the subtraction of C_∞. Similar behaviour has been observed at different thickness.