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A preliminary study on mechanical-electrical behavior of graphite powder-filled high-density polyethylene composites

机译：石墨粉填充高密度聚乙烯复合材料的机电性能初步研究

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Mechanical and electrical responses of graphite powder (GP)-filled high-density polyethylene composites to a uniaxial compression-decompression cycle were studied. Above a compression loading level, a large positive-pressure coefficient effect of resistance was observed, for which a slide mechanism of GP in the matrix is believed to be responsible. In a step-wise compressive loading and loading-holding experiment, the critical compression level was also found, at which the resistance response changed from a time-independent one to a time-dependent, creep-like one. The current-voltage behavior of the composites showed that the GP contact was non-ohmic, regardless of GP contents and pressure levels. (C) 2000 John Wiley & Sons, Inc. [References: 11]
机译：研究了石墨粉（GP）填充的高密度聚乙烯复合材料对单轴压缩-减压循环的机械和电响应。在压缩载荷水平以上，观察到较大的阻力正压系数效应，据信这是基体中GP的滑动机理所致。在逐步压缩加载和保持载荷的实验中，还发现了临界压缩水平，在该水平上，阻力响应从与时间无关的蠕变变为与时间有关的蠕变样。复合材料的电流-电压行为表明，GP触点是非欧姆性的，与GP含量和压力水平无关。 （C）2000 John Wiley＆Sons，Inc. [参考：11]

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