Zhang Mei, Atkinson Ken R, Baughman Ray H
NanoTech Institute and Department of Chemistry, University of Texas at Dallas, Richardson, TX 75083, USA.
Science. 2004 Nov 19;306(5700):1358-61. doi: 10.1126/science.1104276.
By introducing twist during spinning of multiwalled carbon nanotubes from nanotube forests to make multi-ply, torque-stabilized yarns, we achieve yarn strengths greater than 460 megapascals. These yarns deform hysteretically over large strain ranges, reversibly providing up to 48% energy damping, and are nearly as tough as fibers used for bulletproof vests. Unlike ordinary fibers and yarns, these nanotube yarns are not degraded in strength by overhand knotting. They also retain their strength and flexibility after heating in air at 450 degrees C for an hour or when immersed in liquid nitrogen. High creep resistance and high electrical conductivity are observed and are retained after polymer infiltration, which substantially increases yarn strength.
通过在从纳米管森林纺制多壁碳纳米管以制成多层、扭矩稳定纱线的过程中引入捻度，我们获得了强度大于460兆帕斯卡的纱线。这些纱线在大应变范围内呈现滞后变形，可逆地提供高达48%的能量阻尼，并且几乎与用于防弹背心的纤维一样坚韧。与普通纤维和纱线不同，这些纳米管纱线不会因反手打结而强度降低。它们在450摄氏度的空气中加热一小时或浸入液氮后，仍能保持强度和柔韧性。观察到高抗蠕变性和高导电性，并且在聚合物渗透后仍能保持，这显著提高了纱线强度。
