EFFECTS OF COMPRESSIVE STRAIN AND TEMPERATURE ON THE CONDUCTIVITY OF SILICON RUBBER / CARBON BLACK COMPOSITES WITH NANOSIZE SILICA FILLER
SiO2纳米粉对炭黑／硅橡胶复合材料的压阻,阻温特性的影响

The effects of compressive strain and temperature on the silicon rubber / carbon black composites filled with nanosize silica have been studied. It was found that with the increase of nanosize si1ica content, the influence of compressive strain on the resistivity of the composites become significant. In a given pressure range, the resistivity of the composites increases with the compressive strain linearly. For the absence of nanosize silica filler, the resistivity reduces slightly with the increasing of temperature, while increases with the addition of nanosize silica into the composites. In this study, it is shown that the conductivity of the composites follows Ohm's law and is dependent on the gap conductivity between the agglomerates.