THE EFFECT OF STRETCHING STRAIN ON ELECTR OCONDUCTIVITY OF FILLED ORGANOSILOXANE RUBBER

The mechanism of electric conductance of organosiloxane rubbers, fille d with carbon black, is studied under stretching and compressive strai ns. It is shown that changes in specific volume conductivity at high s trains are governed by microstructure of the material, it being to a g reat extent dependent on the type and content of the filler. It is fou nd that a greater sensitivity of electroconducting rubbers to strain, can be achieved when using polymer blends of components with different viscosity and affinity to filler. The enhanced stability and sensitiv ity to stress at small strain can be achieved by optimal choice of sol vent content in polymer-based composite.