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研究了聚乙烯／石墨半导体复合物（ＨＤＰＥ／ＧＰ）在轴向压力下的压阻特性。结果表明，这种复合物的导电性有较显著的压力依赖性。在低压力范围内电阻随压力增加而降低，在较高压力下则随压力增大而升高，呈现出所谓的“电阻负压力系数（ＮＰＣＲ）”和“正压力系数（ＰＰＣＲ）”效应。电阻的压力依赖性，以及在恒压力作用下表现出来的“电阻蠕变”行为，被认为与导电粒子网络在应力作用下的破坏与重组有关。
The piezoresistive properties of polyethylene / graphite semiconductor composites (HDPE / GP) at axial pressure were investigated. The results show that the conductivity of this compound has a more significant pressure dependence. In the low pressure range, the resistance decreases with increasing pressure and increases with increasing pressure at higher pressures, presenting so-called “NPCR” and “PPCR” effects. The pressure dependence of resistance and the “creep resistance” behavior under constant pressure are considered to be related to the destruction and recombination of the conductive particle network under stress.