Carbon nanotube yarns with high tensile strength made by a twisting and shrinking method
Carbon nanotube yarns with high tensile strength made by a twisting and shrinking method
复制标题
加捻收缩法制备的高拉伸强度碳纳米管纱线
DOI：
10.1088/0957-4484/21/4/045708
复制
发表时间：
2010-01-29
期刊：
影响因子：
3.5
通讯作者：
Jiang, Kaili
中科院分区：
文献类型：
--
作者：
Liu, Kai;Sun, Yinghui;Jiang, Kaili
我们报道了一种简单而连续的纺丝方法，该方法结合了加捻和收缩过程来生产碳纳米管纱线。在该方法中，首先将从超定向碳纳米管阵列新纺出的纱线加捻，然后通过挥发性溶剂进行收缩。所生产的纱线由密集堆积的碳纳米管组成，因此具有高达约1GPa的拉伸强度。拉伸强度取决于纱线的直径和捻角。采用水、乙醇、丙酮等不同溶剂对加捻纱线进行预缩，其中丙酮的预缩效果最好。溶剂收缩效应的起源进行了研究。我们的方法有利于连续大规模生产具有宽直径范围的高强度碳纳米管纱线，特别是超细纱线。
We report a simple and continuous spinning method that combines twisting and shrinking processes to produce carbon nanotube yarns. In this method, a yarn freshly spun from a super-aligned carbon nanotube array is first twisted and then passes through a volatile solvent for shrinking. The as-produced yarn consists of densely packed carbon nanotubes, and thus has a tensile strength up to about 1 GPa. The tensile strength depends on the diameter and the twisting angle of the yarn. Different kinds of solvents, such as water, ethanol, and acetone, are used to shrink the twisted yarns, and acetone shows the best shrinking effect. The origin of the solvent shrinking effect is investigated. Our method is favorable for continuous mass production of high strength carbon nanotube yarns with a wide range of diameters, especially ultra-thin yarns.