Influence of Ni particle size on the piezoresistivity and dielectric properties of Ni/silicone rubber composite

Ni/silicone rubber composites with nickel powders of different particle sizes were prepared at a filler/ silicone rubber mass ratio of 2.4∶1.0.The piezoresistivity and the dielectric properties of the composite samples at room temperature were measured.The mechanism of electric conduction is discussed together with the SEM images of the samples.The results show that piezoresistivity of Ni/silicone rubber composite is enhanced by reducing the...