Enhancement of carbon nanotube fibres using different solvents and polymers

被引：149

作者：

Li, Shan ^{[2
]}

Zhang, Xiaohua ^{[1
]}

Zhao, Jingna ^{[1
]}

Meng, Fancheng ^{[1
,3
]}

Xu, Geng ^{[1
,3
]}

Yong, Zhenzhong ^{[1
]}

Jia, Jingjing ^{[2
]}

Zhang, Zuoguang ^{[2
]}

Li, Qingwen ^{[1
]}

机构：

[1] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Key Lab Nanodevices & Applicat, Suzhou 215123, Peoples R China

[2] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2012年 / 72卷 / 12期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Carbon nanotubes; Fibres; Mechanical properties; Electrical properties; Liquid infiltration; ARRAYS; YARNS; COMPOSITE;

D O I：

10.1016/j.compscitech.2012.05.013

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Liquid infiltration is an efficient way to densify carbon nanotubes (CNTs) and was used to strengthen CNT fibres in the method of array spinning. Rather than the volatility, the dipole moment of solvent plays a more important role in determining the densification level. The fibres densified by highly polar but non-volatile solvents such as N,N-dimethylformamide, dimethyl sulphoxide, and N-methyl-2-pyrrolidone were 100-200 MPa stronger than those by ethanol and acetone. Ethylene glycol is the most efficient solvent due to its two polar OH groups and improved the fibre strength to 1.45 GPa. Long chain or crosslinked polymers like polyvinyl alcohol, polyimide, and bismaleimide (BMI) were introduced into CNT fibres by infiltration with aid of polar solvents. These polymers reinforced the fibres significantly, as they can connect non-neighboring CNTs and benefit the load transfer. The strongest CNT/BMI fibre was 2.38 GPa in strength and 110 GPa in modulus. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1402 / 1407

页数：6

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