Interphase effect on the complex permittivity for composite materials at low frequencies



Abstract. This article aims to present a study of the dielectric properties of the epoxy polymer /carbon black nanocomposites, with different concentrations of the dispersed conducting particles in frequencies between 180 Hz and 15 MHz. Measurements showed that the complex permittivity of the composites depends strongly on the volume concentration of the conducting medium. The dielectric behavior of these nanocomposites is compared with that obtained by the calculation of the effective permittivity based on theoretical model taking into account of the effect of the interphase region on the dielectric property of filler/polymer composites. We also attempted to model the dielectric behavior of these environments from a model that takes into account the interphase region. The first results show that the calculated values of the complex permittivity of the latter model, taking some coefficients as adjustable parameters, are in good agreement with experimental values.

Dielectric Properties, Complex Permittivity, Mixing Laws, Interphase Region

Published online 12/10/2016, 4 pages
Copyright © 2016 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: S. EL BOUAZZAOUI, Y. NIOUA, M.E. ACHOUR, F. LAHJOMRI, ‘Interphase effect on the complex permittivity for composite materials at low frequencies’, Materials Research Proceedings, Vol. 1, pp 31-34, 2016

The article was published as article 8 of the book Dielectric Materials and Applications

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