Different concentrations of fillers CoO and Ni(OH)2 were incorporated
in SBR-NBR interlinked composites. The dc electrical conductivity, σdc, for such
composites were measured. The results of the dc conductivity were compared
with samples containing HAF carbon black. The temperature dependence of the
dc conductivity was also measured. The activation energy calculated was found
to be highly affected by both the type and concentration of the filler. The
dielectric properties namely; dielectric constant, ε/, dielectric loss, ε//, and the
ac electrical conductivity σac were measured as functions of both frequency and
concentration of the filler. The results were analyzed according to an equivalent
circuit model.