Technology Research Association for Single Wall Carbon Nanotubes (TASC), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.
Nanoscale Res Lett. 2013 Dec 27;8(1):546. doi: 10.1186/1556-276X-8-546.
The electrical conductivity and mechanical strength of carbon nanotube (CNT) buckypaper comprised of millimeter-scale long single-walled CNT (SWCNT) was markedly improved by the use of longer SWCNTs. A series of buckypapers, fabricated from SWCNT forests of varying heights (350, 700, 1,500 μm), showed that both the electrical conductivity (19 to 45 S/cm) and tensile strength (27 to 52 MPa) doubled. These improvements were due to improved transfer of electron and load through a reduced number of junctions for longer SWCNTs. Interestingly, no effects of forest height on the thermal diffusivity of SWCNT buckypapers were observed. Further, these findings provide evidence that the actual SWCNT length in forests is similar to the height.
由毫米级长单壁碳纳米管 (SWCNT) 组成的碳纳米管 (CNT) 纸的电导率和机械强度通过使用更长的 SWCNT 得到显著提高。一系列由不同高度 (350、700、1500 μm) 的 SWCNT 森林制成的纸表明，电导率 (19 到 45 S/cm) 和拉伸强度 (27 到 52 MPa) 都提高了一倍。这些改进是由于更长的 SWCNT 减少了结的数量，从而改善了电子和负载的传递。有趣的是，在 SWCNT 纸的热扩散率方面，森林的高度没有影响。此外，这些发现提供了证据表明，森林中实际的 SWCNT 长度与高度相似。
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