The thermal-resistivity effect physical mechanism of conductive rubber composite material is discussed. The main factors impact on thermal sensitive properties of conductive rubber is analyzed. The influence rules of thermal-sensitive characteristic of conductive rubber polymer composites are studied

conduetive

matrix material

vulcanizator

modifier

etc. The conductive rubber composite materials with thermal-sensitive characteristic are prepared. Additive amount of particle will change thermal-sensitive properties of composite materials. Less additive amount exhibits negative temperature coefficient effect

and large additive amount exhibits positive temperature coefficient effect. There is a turning point temperature. The viscosity of the substrate material related to the temperature sensitivity of the composite material. The smaller the viscosity

and the greater the resistance range is the stronger the temperature sensitivity is. On the contrary

the more weak. thermal-sensitive characteristics of different components of room temperature vulcanized silicone rubber matrix are very different.Different kinds of vulcanizing agent have some impacts on intensity of temperature sensitive. Adding modified material has a significant effect on the conductive rubber composite materials. Conductive rubber can be used as a sensitive material of temperature sensor.