Ambient Electrical Properties of Mica-Styrene-Butadiene Rubber Composites

• DOI: 10.5254/1.3536202
• Publication Date: 2011-02-16T23:21:06Z
• Authors: S. Debnath; Prajna P. De; D. Khastgir
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract We have studied the effect of addition of (a) mica, (b) silane coupling agent, and (c) silane-treated mica on the ambient dielectric properties of vulcanized styrene-butadiene rubber. It is observed that both dielectric constant and dielectric loss increase as mica, silane, and silane-treated mica are added. The increase is more pronounced in the case of silane-treated mica than for the untreated mica systems. The observed values of dielectric constants are in close agreement with the calculated ones obtained from different theories of heterogeneous dielectrics. Dielectric strength shows an increasing trend in the presence of mica. At higher mica loading, D.C. conductivity decreases slightly.