Research on complex resistance characteristics of the conductive rubber filled by carbon black

Conduction characteristics of carbon black filled conductive rubber prepared in laboratory were investigated. The relationship of current and frequency under the sinusoidal AC excitation was analyzed and a new conductive chain model and equivalent circuit were established. Influences of the different amount of carbon black filled and pressure on frequency range were also studied. The results showed that the conductive rubber filled by carbon black had complex resistance characteristics. Resistance frequency domain of conductive rubber relatively increased with the increasing of the carbon black filler and pressure; while the capacitive reactance frequency domain of conductive rubber relatively decreased with the increasing of pressure.