The present study was carried out to evaluate the performance of nickel-coated graphite (NCG) in comparison with graphite as conductive fillers in polypropylene (PP) matrix. Graphite exhibits smaller particle size and higher aspect ratio (length/thickness) than NCG particles. The results showed that the additions of graphite filler in PP exhibits higher tensile properties and electrical conductivity compared to NCG filled PP composites. The electrical results showed that the percolation threshold of graphite and NCG filled PP composites occurred in the range of 10 to 20 vol.% and 15 to 25 vol.%, respectively.
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Lu Tang (2009) studied this question.
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