INFLUENCE OF FILLER PARTICLE SIZE ON THE CONDUCTIVITY AND PERMITTIVITY OF METAL-POLYMER COMPOSITES
F.Т. BoymuratovNational University of UzbekistanU. AbdurakhmanovNational University of UzbekistanSh. M. SharipovNational University of UzbekistanG.I. MukhamedovNational University of UzbekistanG. Yu. YurkovRussian Academy of Sciences
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The behaviour of conductivity σ and permittivity ε of metal-polymer composites comprising Ni particles dispersed in the phenilon are studied. It is found that the percolation-like behaviour of σ and ε, which is observed when the Ni particles have the sizes of 1−3 μm (micro-dispersed particles), gave way to another behaviour characterized by an additional contribution to σ and ε below the percolation threshold when the Ni particles have the sizes of ≤30 nm (nanoparticles). This peculiarity of the behaviour of σ and ε of the composites can be explained in the frame of the network hierarchy model of composites, which was proposed recently by Balberg et al.
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