Exfoliated Graphite Nanoplatelet-Carbon Nanotube Hybrid Composites for Compression Sensing.,ACS Omega

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Exfoliated Graphite Nanoplatelet-Carbon Nanotube Hybrid Composites for Compression Sensing.
ACS Omega ( IF 3.7 ) Pub Date : 2020-02-03 , DOI: 10.1021/acsomega.9b03012
Changyoon Jeong ₁ , Young-Bin Park ₁

Affiliation

In this study, we investigated the gauge factor and compressive modulus of hybrid nanocomposites of exfoliated graphite nanoplatelets (xGnP) and multiwalled carbon nanotubes (MWCNTs) in a polydimethylsiloxane matrix under compressive strain. Mechanical and electrical tests were conducted to investigate the effects of nanofiller wt %, the xGnP size, and xGnP:MWCNT ratio on the compressive modulus and sensitivity of the sensors. It was found that nanofiller wt %, the xGnP size, and xGnP:MWCNT ratio significantly affect the electromechanical properties of the sensor. The compressive modulus increased with an increase in the nanofiller wt % and a decrease in the xGnP size and xGnP:MWCNT ratio. However, the gauge factor decreases with a decrease in the nanofiller wt % and xGnP size and an increase in the xGnP:MWCNT ratio. Therefore, by investigating the piezoresistive effects of various factors for sensing performance, such as wt %, xGnP size, and xGnP:MWCNT ratio, the concept of one- and two-dimensional hybrid fillers provides an effective way to tune both mechanical properties and sensitivity of nanocomposites by tailoring the network structure of fillers.

中文翻译：

片状石墨纳米片-碳纳米管混杂复合材料，用于压缩传感。

在这项研究中，我们研究了在压缩应变下，聚二甲基硅氧烷基体中的片状石墨纳米片（xGnP）和多壁碳纳米管（MWCNT）杂化纳米复合材料的规格因子和压缩模量。进行了机械和电气测试，以研究纳米填料的重量百分比，xGnP尺寸和xGnP：MWCNT比对传感器的压缩模量和灵敏度的影响。发现纳米填料的重量％，xGnP尺寸和xGnP∶MWCNT比率显着影响传感器的机电性能。压缩模量随着纳米填料wt％的增加和xGnP尺寸和xGnP∶MWCNT比的减小而增加。然而，规格因子随着纳米填料wt％和xGnP尺寸的减小以及xGnP∶MWCNT比的增加而减小。因此，

更新日期：2020-02-18

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