A Theoretical Investigation of the Electrical and Dielectric Properties of PDMS-CNT

IF 1.8 4区 工程技术 Q3 POLYMER SCIENCE
Poovendran Karuppiah, Ramanujam Nambi Ramachary, Joseph Wilson Kulandai Samy, Prasanna Venkatesh Vadivel Murugan
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引用次数: 0

Abstract

In the present study, the dielectric and electrical properties of the carbon nanotube/polydimethylsiloxane (CNT/PDMS) composite are theoretically analyzed for various doping concentrations. For both single-walled and multiwalled CNTs (SCNTs and MCNTs), the work is done between 75 and 750 THz. The behavior of the dielectric constant, loss factor, and conductivity are analyzed as functions of frequency. It is observed that there is no appreciable change in the real part of the dielectric constant at high frequencies in single-walled CNT. The loss tangent is high at lower frequencies, and the loss peak is observed at a particular frequency. The Cole–Cole plot is used to interpret the static- and high-frequency dielectric constants and relaxation time of the composite. With increasing concentrations of SCNT and MCNT, the conductivity at the obtained peak maximum shifts to a lower frequency.

PDMS-CNT 的电学和介电特性理论研究
本研究从理论上分析了不同掺杂浓度的碳纳米管/聚二甲基硅氧烷(CNT/PDMS)复合材料的介电性能和电气性能。研究分析了介电常数、损耗因子和电导率随频率变化的情况。据观察,单壁 CNT 在高频率下介电常数的实部没有明显变化。损耗正切在较低频率下较高,在特定频率下会出现损耗峰值。Cole-Cole 图用于解释复合材料的静态和高频介电常数以及弛豫时间。随着 SCNT 和 MCNT 浓度的增加,峰值最大值处的电导率会向较低频率移动。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Macromolecular Theory and Simulations
Macromolecular Theory and Simulations 工程技术-高分子科学
CiteScore
3.00
自引率
14.30%
发文量
45
审稿时长
2 months
期刊介绍: Macromolecular Theory and Simulations is the only high-quality polymer science journal dedicated exclusively to theory and simulations, covering all aspects from macromolecular theory to advanced computer simulation techniques.
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