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  Seung-Yeol Jeon:利用原位拉曼光谱分析CNT纱的机械性能
2013-11-01
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会议:第十二届亚洲纺织会议暨2013中国纺织学术年会

时间:2013年10月24-26日

地点:上海东华大学

分会场:纺织纳米技术

报告题目:利用原位拉曼光谱分析CNT纱的机械性能

报告人:Seung-Yeol Jeon

 

报告英文简介:

Considerable efforts have been made to realize remarkable nano-scale properties of carbon nanotubes (CNTs) in micro/macro-scale applications. CNT yarns have been recognized as the most attractable products derived from CNTs for their macroscopic applications to, e.g., superelastic muscles, flexible touch screens, transparent electrodes, supercapacitors, energy harvesters, etc. For these applications to be successful, it is essential to understand the geometrical arrangement and orientation of individual CNT within CNT yarns during their deformation and the effect of such geometrical parameters on the mechanical behavior of CNT yarns. In this study, the mechanical behavior of CNT yarns, which were manufactured by twisting CNT sheets drawn from CNT forests, was investigated along with their internal changes using in-situ Raman spectroscopy. Firstly, changes in internal structure of CNT yarns under tension and torsion were investigated using a fiber orientation function which are determined by the intensity of the G band in the Raman spectra of CNT yarns. Raman bend shifts relating to the mechanical deformation of individual CNTs within CNT yarns also investigated with geometrical analysis. Finally, tensile behavior and torsional behavior of CNT yarns were studied comparing with the existing staple yarn theory.

 

【专题】第十二届亚洲纺织会议暨2013中国纺织学术年会

http://www.ctei.gov.cn/special/2013nzt/atc12/

 

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