:: Advanced Composites Letters on-line ABSTRACTS ::

Volume 8, Issue 1, 1999
DC And AC Conductivity In Polymeric Particulate Composites Of Epoxy Resin And Metal Particles

G.M. Tsangaris, G.C. Psarras^b, and E. Manolakaki

National Technical University, Chemical Engineering Dp., Materials Science and Engineering Section, 9, Iroon Polytechniou Str., Athens 157 80, Greece

^bAuthor to whom correspondence should be addressed
ABSTRACT

The DC and AC conductivity of composites with epoxy resin and nickel particles was investigated for various content of nickel powder from ambient to 120^oC. AC conductivity was measured in the frequency range 10 Hz to 13 MHz. An enhancement of conductivity was evidenced increasing conductive filler content and temperature. AC conductivity was found to be frequency dependent beyond a critical frequency ù. The activation energy of the temperature shift of ù was compared to the activation energy of DC conductivity.

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