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首页> 外文期刊>Journal of Applied Polymer Science >Effect of Strain on the Properties of an Ethylene-Octene Elastomer with Conductive Carbon Fillers
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Effect of Strain on the Properties of an Ethylene-Octene Elastomer with Conductive Carbon Fillers

机译：应变对含导电碳填料的乙烯-辛烯弹性体性能的影响

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Composites that incroporate a conductive filler into an ethylene-octene (EO) elastomer matrix were evaluated for DC electrical and mechanical properties. Comparing three types of fillers (carbon fiber, low structrue carbon black, and hgih structure carbon black), it was found that the composite with hgih structrue carbon black exhibited a combination of properties not generally achievable with this type of filler in an elastomeric matrix. A decrease in resistivity at low strains is unusual and has only been reported previously in a few instances. Reversibility in the resistivity upon cyclic deformation is a particularly unusual feature of EO with hgih structure carbon black. The mechanical and electrical performance fo the high structure carbon black composites at high strains was also impressive. Mechanical reinforcement in accordance with the Guth model attested to good particle-matrix adhesion. The EO matrix also produced composites that retained the inherent hgih elongation of the unfilled elastomer even with the maximum amount of filler (30% by volume). The EO matrix with other conducting fillers did not exhibit the exceptional properties of EO with high structure carbon black. Composites with carbon fiber and low structure carbon black did nto maintain good mechanical properties, generally exhibited an increase in resistivity with strain, and exhibited irreversible changes in both mechanical and electrical properties after extension to even low strains. An explanation of the unusual properties of EO with high structure carobn blackd required unique features of both filler and the matrix. The proposed model incorporates the multifiunctional physical crosslinks of the EO matrix and dynamci filler-matrix bonds.
机译：评估了将导电填料渗入乙烯-辛烯（EO）弹性体基体的复合材料的直流电和机械性能。比较三种类型的填料（碳纤维，低结构炭黑和hgih结构炭黑），发现具有hgih结构炭黑的复合材料表现出在弹性体基质中通常无法获得的这类性能的组合。低应变下的电阻率降低是不常见的，并且以前仅在少数情况下有过报道。循环变形时电阻率的可逆性是具有高结构炭黑的EO的一个特别不寻常的特征。高结构炭黑复合材料在高应变下的机械和电气性能也令人印象深刻。根据Guth模型进行的机械加固证明了良好的颗粒矩阵附着力。 EO基体还可以生产出即使最大量的填料（30％体积比）仍能保持未填充弹性体固有的hgih伸长率的复合材料。具有其他导电填料的EO基体没有表现出具有高结构炭黑的EO的优异性能。具有碳纤维和低结构炭黑的复合材料不能保持良好的机械性能，通常表现出随应变的电阻率增加，并且在延伸至甚至低应变后，其机械和电性能均表现出不可逆变化。对高结构碳黑的EO异常性能的解释要求填料和基体都具有独特的功能。所提出的模型结合了EO基体和动态填料-基体键的多功能物理交联。

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