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Mechanical and Electrical Properties of Multiwalled Carbon Nanotube Nanocomposites with Different Resin Matrices
Physical Mesomechanics ( IF 1.6 ) Pub Date : 2021-06-01 , DOI: 10.1134/s1029959921020120
S. Samankan , M. R. Ayatollahi , S. Shadlou

Abstract

Researchers have investigated the effects of different nanoenhancers on the physical properties of polymer-based nanocomposites. However, the effect of resin type on the properties of nanocomposites reinforced by multiwalled carbon nanotube (MWCNT) has not been studied very well. This study aims to understand the link between the nature of polymer as the base material for nanocomposite and the reinforcement role of MWCNT. Three common polymers, with high industrial applications, namely vinyl ester, polyester and epoxy were chosen. The standard tensile specimens were prepared for both neat and reinforced resins using 0.5 wt % of MWCNTs. The results indicated that while for the vinyl ester and polyester resins there was no improvement in the elastic modulus, for the epoxy resin the elastic modulus increases by 5.6% with addition of MWCNT. On the other hand, the electrical test results showed that electrical conductivity was greatly increased in the presence of MWCNT, for both vinyl ester and epoxy resins. But for the polyester resin, little improvement was observed with the addition of MWCNT. The mechanisms causing this trend were investigated. Moreover, several optical microscopy and scanning electron microscopy images were taken from the fracture surfaces to evaluate the surface features and fracture mechanisms.



中文翻译:

具有不同树脂基体的多壁碳纳米管纳米复合材料的机械和电学性能

摘要

研究人员研究了不同纳米增强剂对聚合物基纳米复合材料物理性能的影响。然而,树脂类型对多壁碳纳米管(MWCNT)增强纳米复合材料性能的影响尚未得到很好的研究。本研究旨在了解作为纳米复合材料基础材料的聚合物的性质与多壁碳纳米管的增强作用之间的联系。选择了三种具有高度工业应用的常见聚合物,即乙烯基酯、聚酯和环氧树脂。使用 0.5 wt% MWCNTs 为纯树脂和增强树脂制备标准拉伸试样。结果表明,对于乙烯基酯和聚酯树脂,弹性模量没有提高,而对于环氧树脂,加入 MWCNT 后,弹性模量增加了 5.6%。另一方面,电学测试结果表明,在多壁碳纳米管的存在下,乙烯基酯和环氧树脂的电导率都大大增加。但对于聚酯树脂,添加 MWCNT 后几乎没有观察到改善。研究了导致这种趋势的机制。此外,从断裂表面拍摄了几张光学显微镜和扫描电子显微镜图像,以评估表面特征和断裂机制。

更新日期:2021-06-02
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