The best features of diamond nanothread for nanofibre applications.
The best features of diamond nanothread for nanofibre applications.
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DOI：
10.1038/ncomms14863
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发表时间：
2017-03-17
影响因子：
16.6
通讯作者：
Gu Y
中科院分区：
文献类型：
--
作者：
Zhan H;Zhang G;Tan VB;Gu Y
碳纤维因其出色的物理性能而引起了科学界和工程界的兴趣。在这里，我们报道了最近合成的超细金刚石纳米线不仅具有优异的扭转变形能力，而且还具有优异的界面载荷传递效率。与(10,10)碳纳米管束相比，金刚石纳米线束中没有观察到纳米管的扁平化，这导致其高扭转弹性极限几乎高出三倍。拉拔测试表明，金刚石纳米线束的界面传递载荷是碳纳米管束的两倍以上，相当于界面剪切强度高一个数量级。如此高的负载传递效率归因于界面处强大的机械联锁效应。这些有趣的特征表明金刚石纳米线可能是构建下一代碳纤维的绝佳候选者。碳纤维正在成为一种有前景的多功能纳米纺织品材料。在这里，作者表明金刚石纳米线具有优异的扭转变形能力和界面载荷传递效率，是构建下一代碳纤维的理想选择。
Carbon fibres have attracted interest from both the scientific and engineering communities due to their outstanding physical properties. Here we report that recently synthesized ultrathin diamond nanothread not only possesses excellent torsional deformation capability, but also excellent interfacial load-transfer efficiency. Compared with (10,10) carbon nanotube bundles, the flattening of nanotubes is not observed in diamond nanothread bundles, which leads to a high-torsional elastic limit that is almost three times higher. Pull-out tests reveal that the diamond nanothread bundle has an interface transfer load of more than twice that of the carbon nanotube bundle, corresponding to an order of magnitude higher in terms of the interfacial shear strength. Such high load-transfer efficiency is attributed to the strong mechanical interlocking effect at the interface. These intriguing features suggest that diamond nanothread could be an excellent candidate for constructing next-generation carbon fibres. Carbon fibres are emerging as a promising material for multifunctional nanotextiles. Here, the authors show that diamond nanothread possesses excellent torsional deformation capability and interfacial load transfer efficiency, ideal for constructing next generation carbon fibres.