Scratch-Resistant, Highly Conductive, and High-Strength Carbon Nanotube-Based Composite Yarns

被引：227
作者：
Liu, Kai [1 ,2 ,3 ]
Sun, Yinghui [1 ,2 ]
Lin, Xiaoyang [1 ,2 ]
Zhou, Ruifeng [1 ,2 ]
Wang, Jiaping [1 ,2 ]
Fan, Shoushan [1 ,2 ]
Jiang, Kaili [1 ,2 ]
机构：
[1] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Tsinghua Foxconn Nanotechnol Res Ctr, Beijing 100084, Peoples R China
[3] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
来源：
ACS NANO | 2010年 / 4卷 / 10期
基金：
中国博士后科学基金;
关键词：
carbon nanotube; yarn; array; composite; superaligned; FIBERS; SINGLE; SCALE; SPUN;
D O I：
10.1021/nn1017318
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
\ High-strength and conductive carbon nanotube ((NT) yarns are very attractive in many potential applications. However, there is a difficulty when simultaneously enhancing the strength and conductivity of (NT yarns. Adding some polymers into (NT yarns to enhance their strength will decrease their conductivity, while treating them in acid or coating them with metal nanoparticles to enhance their conductivity will reduce their strength. To overcome this difficulty, here we report a method to make high-strength and highly conductive (NT-based composite yarns by using a continuous superaligned (NT (SA(NT) yarn as a conductive framework and then inserting polyvinyl alcohol (PVA) into the intertube spaces of the framework through PVA/dimethyl sulphoxide solution to enhance the strength of yarns. The as-produced CNT/PVA composite yarns possess very high tensile strengths up to 2.0 GPa and Young's moduli more than 120 GPa, much higher than those of the CNT/PVA yarns reported. The electric conductivity of as-produced composite yarns is as high as 9.2 x 10(4) S/m, comparable to HNO3-treated or Au nanoparticle-coated CNT yarns. These composite yarns are flexible, lightweight, scratch-resistant, very stable in the lab environment, and resistant to extremely humid ambient and as a result can be woven into high-strength and heatable fabrics, showing potential applications in flexible heaters, bullet-proof vests, radiation protection suits, and spacesuits.
引用
收藏
页码：5827 / 5834
页数：8
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