The models for thermal conductivity of polymer nanocomposites reinforced by carbon nanotubes (CNT) (PCNT) can express the electrical conductivity, because both electrical and thermal conductivities consistently depend on the CNT properties. In this study, a known model for thermal conductivity of PCNT is simplified and developed for electrical conductivity assuming CNT aspect ratio, network fraction, interphase districts, tunneling area between near CNT and CNT wettability by polymer medium. Simple equations express the volume fraction of networked CNT by CNT loading, CNT size and interphase depth. In addition, applicable equations suggest the total conduction of CNT and tunnels. The satisfactory matching among measured records and forecasts in addition to the rational effects of whole factors on the conductivity confirm the advanced model. Lengthy CNT and dense interphase usefully manipulate the conductivity, but short CNT or thin interphase cannot increase the conductivity of insulated medium. Additionally, only the high level of polymer tunneling resistivity prevents the conducting efficiency of CNT in PCNT. Also, wide tunnels and short tunneling distance highly progress the conductivity, but very small tunneling width causes an insulated specimen.

中文翻译：

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通过已知的热导率模型改进用碳纳米管增强的聚合物纳米复合材料的电导率模型

由碳纳米管 (CNT) (PCNT) 增强的聚合物纳米复合材料的热导率模型可以表达电导率，因为电导率和热导率始终取决于 CNT 特性。在这项研究中，假设 CNT 纵横比、网络分数、相间区、附近 CNT 之间的隧道面积和聚合物介质对 CNT 的润湿性，简化和开发了 PCNT 热导率的已知模型，用于电导率。简单的方程通过碳纳米管负载、碳纳米管尺寸和相间深度来表达网络碳纳米管的体积分数。此外，适用的方程表明 CNT 和隧道的总传导。实测记录与预报的良好匹配，加上整体因素对电导率的合理影响，证实了先进的模型。长的碳纳米管和致密的中间相有助于控制电导率，但短的碳纳米管或薄的中间相不能增加绝缘介质的电导率。此外，只有高水平的聚合物隧道电阻率才能阻止 CNT 在 PCNT 中的导电效率。此外，宽隧道和短隧道距离极大地提高了电导率，但非常小的隧道宽度会导致绝缘样品。