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Estimation of average contact number of carbon nanotubes (CNTs) in polymer nanocomposites to optimize the electrical conductivity
Engineering with Computers ( IF 8.7 ) Pub Date : 2020-08-26 , DOI: 10.1007/s00366-020-01153-1
Yasser Zare , Kyong Yop Rhee

The present paper suggests an equation for the average contact number of carbon nanotubes (CNTs) in CNT-reinforced polymer nanocomposites (PCNT) by two developed equations for electrical conductivity. Several novel parameters in PCNT such as CNT size, CNT concentration, network fraction, interphase depth, tunneling effect, and CNT wettability by the polymer medium are considered to define the average contact number (m). “m” is calculated for some samples and the variation of “m” is explored over a range of parameters’ values. The results show that dense interphase, high fraction of networked CNTs, reedy and short CNTs, low CNT surface energy, high polymer surface energy, low tunneling distance, and small contact diameter increase the “m” improving the conductivity. Moreover, tunneling distance and CNT contact diameter have the greatest effects on the “m”. The optimized level for “m” is necessary to control the nanocomposite’s conductivity.

中文翻译:

估计聚合物纳米复合材料中碳纳米管 (CNT) 的平均接触数以优化电导率

本论文通过两个开发的电导率方程提出了碳纳米管 (CNT) 在 CNT 增强聚合物纳米复合材料 (PCNT) 中的平均接触数的方程。PCNT 中的几个新参数,如 CNT 尺寸、CNT 浓度、网络分数、界面深度、隧道效应和聚合物介质对 CNT 的润湿性被认为定义了平均接触数 (m)。计算某些样品的“m”,并在一系列参数值中探索“m”的变化。结果表明,致密的界面、高比例的网状碳纳米管、短小的碳纳米管、低碳纳米管表面能、高聚合物表面能、低隧穿距离和小接触直径增加了“m”,从而提高了电导率。而且,隧穿距离和 CNT 接触直径对“m”的影响最大。“m”的优化水平对于控制纳米复合材料的电导率是必要的。
更新日期:2020-08-26
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