Electrical behaviour of conducting silicon rubber under short high current stress

The conducting silicon rubber was highly stressed by means of voltage impulses in order to investigate the electric behaviour of this material. A specific value of electric load-carrying capacity was observed. Below this value material exhibits resistive character and constant electrical properties, however, above this value the material is damaged and can not be used in practical application. The explanation of the cause of damage and the influence of positive temperature coefficient (PTC-effects) has been proposed.