In conductive composites, when the content of conductive filler is large enough and the distribution is uniform, the change of the distance between the internal conductive particles is weak to the change of the resistance value when the deformation is small. At this time, the change of the geometry of CPC material plays a key role in the change of the resistance. According to the material factor G (ε) = L / S = g (0) (1 + ε) 2 (where l and s are the sample respectively Length and cross-sectional area) and considering the effect of transverse deformation of rubber material under small deformation, according to the relevant reports in the literature, when the deformation is small, the change of resistance can be expressed by the following laws:<br>
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