DBPapers
DOI: 10.5593/SGEM2014/B62/S26.022

EXPERIMENTAL STUDY OF DIELECTRIC AND FUNCTIONAL PROPERTIES OF POLYMER MATRIX/CU2O/BATIO3 HETEROGENEOUS COMPOSITES IN BROAD BAND FREQUENCY

H. BAKHTI, N. BOUZIT
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-21-6 / ISSN 1314-2704, June 19-25, 2014, Book 6, Vol. 2, 169-176 pp

ABSTRACT
In this work, we present an experimental study on a novel ternary composite material. In this case, several samples with barium titanate (BaTiO3) and copper oxide (Cu2O) particles in powder form in various amounts dispersed in a host matrix of epoxy resin (Re/BT/Cu2O) are carried out and sintered at 150°C. Their dielectric constants spectra were measured in the frequency range DC–3GHz by time domain spectroscopy (TDS). Low frequency has also been performed throughout this work, and it has primarily concentrated on conductivity behaviour which may be attributed to the effects of a percolation process. Experimental data were analyzed by means of dielectric permittivity and electric modulus formalisms. The functionality of the composite systems is related to the abrupt variation of the real part of permittivity, and to the relaxation process of the Cu2O particles. In addition, the behaviour obtained experimentally has been validated by the random mixture law of Lichtenecker in order to predict the electromagnetic behaviour of such composite material.

Keywords: Composite, Copper oxide (I), modelling, Relaxation phenomena, electrical modulus.