Tsinghua-Foxconn Nanotechnology Research Center and Department of Physics, Tsinghua University, Beijing 100084, People's Republic of China.
Nano Lett. 2012 Sep 12;12(9):4848-52. doi: 10.1021/nl3023274. Epub 2012 Aug 28.
High-density buckypapers were obtained by using well-aligned carbon nanotube arrays. The density of the buckypapers was as high as 1.39 g cm(-3), which is close to the ultimate density of ideal buckypapers. Then we measured the transport and mechanical properties of the buckypapers. Our results demonstrated that its electrical and thermal conductivities could be almost linearly improved by increasing its density. In particular, its superior thermal conductivity is nearly twice that of common metals, which enables it a lightweight and more efficient heat-transfer materials. The Young's modulus of the buckypapers could reach a magnitude over 2 GPa, which is greatly improved compared with previous reported results. In view of this, our work provided a simple and convenient method to prepare high-density buckypapers with excellent transport and mechanical properties.
高密度巴基纸是通过使用取向良好的碳纳米管阵列获得的。巴基纸的密度高达 1.39g/cm³，接近理想巴基纸的极限密度。然后，我们测量了巴基纸的传输和机械性能。我们的结果表明，通过增加其密度，其电导率和热导率几乎可以呈线性提高。特别是，其优异的热导率几乎是普通金属的两倍，使其成为一种重量轻、传热效率更高的材料。巴基纸的杨氏模量可达到 2GPa 以上，与之前报道的结果相比有了很大的提高。有鉴于此，我们的工作提供了一种简单方便的方法来制备具有优异传输和机械性能的高密度巴基纸。
