Silicone rubber is a kind of raw material with good conductivity. Generally, rubber products are conductive, because when the raw materials are added with auxiliary materials, carbon black will be added. Carbon black is conductive, but the conductive current can also be strong or weak. And silica gel conductive O-ring, conductive performance is very superior.
Conductive silicone rubber is based on silicone rubber, with conductive fillers, crosslinking agents and other compounding vulcanization. Common conductive fillers include carbon black, carbon fiber, superconducting carbon black, graphite, copper powder, silver powder, aluminum powder, etc.
Compared with general conductive rubber, conductive silicone rubber has the advantages of small volume resistivity, low hardness, high and low temperature resistance (- 70 to 200), aging resistance, good processing and manufacturing process performance, especially suitable for manufacturing conductive silicone rubber products with good conductivity, complex shape and fine structure.
According to the varieties and processing methods of the base rubber, it can be made into high temperature vulcanized conductive silicone rubber and room temperature vulcanized conductive silicone rubber, as well as pressure-sensitive conductive silicone rubber, anisotropic conductive silicone rubber and low temperature conductive silicone rubber.
With the development of electronic technology and instrument industry, it also promotes the improvement and development of conductive silicone rubber, and many new processes and varieties appear. For example, in the vulcanization process, the atmospheric pressure hot air vulcanization of conductive silicone rubber appears, instead of the traditional high-temperature addition vulcanization (peroxide vulcanization); in the performance of products, there are high tear resistance conductive silicone rubber and some kind of metal powder added in silicone rubber, the pressure part is conductive, and the non pressure part is still insulated. Therefore, the application of conductive seal ring silicone rubber is more and more extensive.