碳纳米管具有优异的力、电、热、光学等功能特性,如何在宏观尺度上充分发挥和利用碳纳米管的优异性能是科学家和工程技术人员普遍关注的一个热点.宏观碳纳米管聚集体是推动碳纳米管应用研究发展的一个重要途径和手段.系统综述了碳纳米管纤维、碳纳米管薄膜以及碳纳米管阵列等宏观聚集体制备技术方面的最新研究进展,重点关注了聚集体的力学性能,并结合我们自身的研究工作,预测了碳纳米管聚集体在复合材料领域的应用和发展前景以及未米发展中可能的机遇和挑战.
As one of the classical one dimensional (1D) nanoscale structures, carbon nanotubes (CNTs) possess remarkable mechanical, electrical and thermal properties. During the past years, considerable attentions have been drawn to utilizing individual CNTs as high performance engineering materials. To this end, the production of macroscopic architectures based on assembled CNTs with controlled orientation and configuration become an important step towards practical applications. Herein, we present some new developments in the production of 1D CNT fibers, two-dimensional (2D) CNT films/sheets, and three-dimensional (3D) vertically aligned CNT arrays or CNT foams, with focus concentrated on their mechanical performances, especially when these macroscale CNT assemblies are brought into polymer matrices as nanocomposites. Their potential applications are also prospected in this review.