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首页> 外文期刊>Journal of industrial and engineering chemistry >Effects of CNT size, network fraction, and interphase thickness on the tunneling distance between neighboring carbon nanotubes (CNTs) in nanocomposites
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Effects of CNT size, network fraction, and interphase thickness on the tunneling distance between neighboring carbon nanotubes (CNTs) in nanocomposites

机译：CNT尺寸，网络分数和相互厚度对纳米复合材料相邻碳纳米管（CNTs）之间的隧道距离的影响

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This article develops a simple equation for the tunneling distance between neighboring carbon nanotubes (CNTs) in polymer CNTs nanocomposites (PCNTs) as a function of CNT concentration, CNT dimensions, interphase thickness, the percentage of networked CNTs, and the wettability of the CNTs by polymer chains. The coupling of two developed models for the conductivity of PCNTs, assuming interphase and tunneling effects expresses in this equation. The suggested equation calculates the tunneling distance for some PCNT samples at different filler concentrations, and expresses the impacts of all the parameters on the tunneling distance. The appropriate predictions of the developed models for the conductivity of the samples and the acceptable levels of tunneling distance at various values of all parameters validate the suggested equation. The calculations indicate that the thinnest CNTs (radius of 5 nm) and the largest CNTs (length of 5 mu m) produced the shortest tunneling distance of 2.5 nm, but the maximum tunneling distance of 6.5 nm was observed at the CNT radius of 20 nm and length of 20 mu m. In addition, the low surface energy of the polymer matrix and the high CNT surface energy result in a short tunneling distance, but their roles in the tunneling distance are negligible. (C) 2019 Published by Elsevier B.V. on behalf of The Korean Society of Industrial and Engineering Chemistry.
机译：本文在CNT浓度，CNT尺寸，相互异位厚度，网络CNT的百分比和CNT的润湿性的情况下，在聚合物CNT纳米复合材料（PCNTs）中的隧道距离的隧道距离的简单方程式开发了相邻碳纳米管（CNTS）之间的隧道距离。聚合物链。两个开发模型的耦合用于PCNT的电导率，假设在该等式中表达了相互作用和隧道效应。建议的等式计算不同填充物浓度的一些PCNT样本的隧道距离，并表达所有参数对隧道距离的影响。所有参数的各种值的样本电导率和隧道距离的可接受水平的适当预测验证了所提出的等式。计算表明，最薄的CNT（半径为5nm）和最大的CNT（长度为5μm），产生了2.5nm的最短隧道距离，但在20nm的cnt半径下观察到6.5nm的最大隧道距离长度为20亩。另外，聚合物基质的低表面能和高CNT表面能导致短隧道距离，但它们在隧道距离中的作用可以忽略不计。 （c）2019年由Elsevier B.V发布。代表朝鲜工程和工程化学学会。

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