Piezoresistance Behavior of Polyvinyl Chloride/Carbon Black Conductive Composites

Abstract

Abstract: The piezoresistive behavior of polyvinyl chloride/carbon black(PVC/CB) conductive composites subjected to uniaxial compression-decompression cycles was studied. The composites exhibited a significant piezoresistance, when CB mass fraction w was located in the vicinity of the percolation threshold wc. The composites displayed a positive pressure coefficient(PPC) effect at w<wc and negative pressure coefficient(NPC) effect at w>wc. Uniaxial compression might facilitate the NPC effect or weaken the PPC effect when w was located in the vicinity of wc.

Key words: Poly(vinyl chloride), Carbon black, Piezoresistance behavior, Uniaxial compression-decompression, Phenomenological model

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XU Wen-Wu, SONG Yi-Hu, ZHOU Jian-Feng, ZHENG Qiang, ZHANG Ming-Qiu. Piezoresistance Behavior of Polyvinyl Chloride/Carbon Black Conductive Composites[J]. Chem. J. Chinese Universities, 2005, 26(6): 1170.

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Piezoresistance Behavior of Polyvinyl Chloride/Carbon Black Conductive Composites

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