Effect of axial stretching on electrical resistivity of short carbon fibre and carbon black filled conductive rubber composites
Effect of axial stretching on electrical resistivity of short carbon fibre and carbon black filled conductive rubber composites
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DOI：
10.1002/pi.811
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发表时间：
2002-02-01
影响因子：
3.2
通讯作者：
Khastgir, D
中科院分区：
文献类型：
--
作者：
Das, NC;Chaki, TK;Khastgir, D
研究了在恒定应变速率下，炭黑和短碳纤维填充橡胶复合材料的电阻率随应变程度的变化。结果表明，应变程度和应变速率都影响复合材料的电阻率。电阻率对应变和应变速率的变化取决于导电填料的浓度和类型。短碳纤维（SCF）的掺入赋予复合材料更高的导电性比炭黑在相同的负载水平。炭黑填充复合材料的力学性能优于SCF填充复合材料。在拉伸-回缩循环期间观察到电固化，即电阻率的永久性变化。一个很好的相关性被发现之间的机械响应和对应变灵敏度的电响应。不同的实验结果进行了讨论的光击穿和形成的导电网络的填充橡胶复合材料。(C)2002年，化学工业协会。
The variation of electrical resistivity of carbon black and short carbon fibre (SCF) filled rubber composites was studied against the degree of strain at constant strain rate. It was found that both the degree of strain and strain rate affect the electrical resistivity of the composites. The change in resistivity against the strain and strain rate depends both on the concentration and the type of conductive filler. The incorporation of short carbon fibres (SCF) imparts higher conductivity to the composite than carbon black at the same level of loading. Composites filled with carbon black exhibit better mechanical properties than SCF filled composites. Electrical setting, ie a permanent change in electrical resistivity, was observed during extension-retraction cycles. A good correlation was found between the mechanical response and the electrical response towards strain sensitivity. The results of different experiments are discussed in the light of breakdown and formation of conductive networks in the filled rubber composites. (C) 2002 Society of Chemical Industry.