Abstract: With carbon black and aluminum powder as conductive fillers, the conductive silicone rubber samples were prepared by solution blending. Effect of carbon black/aluminum powder on conductivity and piezo resistance of the silicone rubber was studied. It showed that the resistance of the silicone rubber decreased first and then increased with increasing aluminum powder content and constant carbon black content. When the filler content was constant, with increasing pressure, the piezo resistance decreased and tends to be stable. The studies showed that the conductivity of was best and the piezo resistive range was increased when the carbon black content was 30 % and aluminum powder content was 3 %.

Key words: conductive silicone rubber, carbon black, aluminum silver powder, conductivity, piezo resistance properties