Anisotropic carbon nanotube papers fabricated from multiwalled carbon nanotube webs
Anisotropic carbon nanotube papers fabricated from multiwalled carbon nanotube webs
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DOI：
10.1016/j.carbon.2011.02.010
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发表时间：
2011-06-01
期刊：
影响因子：
10.9
通讯作者：
Naito, Kimiyoshi
中科院分区：
文献类型：
--
作者：
Inoue, Yoku;Suzuki, Yusuke;Naito, Kimiyoshi
我们制造了大规模的各向异性碳纳米管（CNT）纸页堆叠持久的多壁碳纳米管（MWCNT）网，而不使用粘合剂材料。MWCNT在网中高度对齐，并且它们在制造的纸中保持其对齐。虽然多壁碳纳米管只是通过货车德瓦尔斯力连接，但拉伸强度高达75.6 MPa。此外，电阻率和热导率分别为2.5 × 10（-3）Ω cm和70 W/m K。电阻率为7.3和热导率为8.1的高各向异性比是由于具有毫米长度的超长MWCNT的高度对准。拉伸速度超过10 m/s的高速卷材拉伸可实现非常快速的制造。CNT结构的材料性质可以通过用于宏观样品的常规方法而不是针对纳米材料设计的方法来测量。碳纳米管网络技术将使碳纳米管能够用于新的应用中。(C)2011爱思唯尔有限公司保留所有权利。
We fabricated large-scale anisotropic carbon nanotube (CNT) paper sheets by stacking long-lasting multiwalled CNT (MWCNT) webs without using binder materials. The MWCNTs are highly aligned in the webs and they retain their alignment in the fabricated paper. Although MWCNTs are just connected by van der Waals force, tensile strength is as strong as 75.6 MPa. In addition, resistivity and thermal conductivity is as good as 2.5 x 10(-3) Omega cm and 70 W/m K, respectively. The present high anisotropy ratios of 7.3 in resistivity and of 8.1 in thermal conductivity are due to the high alignment of the ultra-long MWCNTs which have lengths of millimeters. High-speed web drawing with a draw speed of over 10 m/s enables very rapid fabrication. The material properties of CNT structures can be measured by conventional methods for macroscopic samples rather than methods designed for nanomaterials. CNT web technology will enable CNTs to be used in new applications. (C) 2011 Elsevier Ltd. All rights reserved.