文献类型：期刊文献

英文题名：Improvement of the tensile strength of carbon nanotube fibers to 12.5 GPa by fluidics-induced alignment and densification

作者：Wang, Jian Nong[1];Chen, Yu Ting[2];Zhang, Heng[2];Zhan, Hang[1];Wang, Qing Xuan[1];Cao, Jun[1];Liu, Xi[1];Zheng, Jian Feng[1];Liu, Kang Fei[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2026

卷号：17

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;Scopus(收录号：2-s2.0-105047027918);WOS:【SCI-EXPANDED(收录号:WOS:001847832200003)】；

基金：Jian Nong Wang was funded by the National Key R&D Program of China (2022YFA1203303) and National Natural Science Foundation of China (52172089).

语种：英文

摘要：Achieving the superior tensile strength of individual carbon nanotubes (CNTs) in macroscopic fibers depends on how CNTs are assembled. This study reports a fluidics approach: spraying high-velocity ethanol to scour and shrink pre-made CNT fibers. Experimental measurements show that the continuous scouring and shrinking induce significant improvements of the CNT alignment and packing density, leading to large increases of the van der Waals forces between CNTs and thus the tensile strength of the fibers. Under optimal conditions, the new CNT fibers achieve a specific tensile strength of 7.5 & times;10(6 )N & sdot;m & sdot;kg(-)(1) (or 7.5 N & sdot;tex(-)(1)) and absolute strength of 12.5 GPa, approaching the lower limit of individual CNTs. They also exhibit a high Young's modulus of 370 GPa, electrical conductivity of similar to 3 & times;10(6) S & sdot;m(-)(1), and thermal conductivity of similar to 968 W & sdot;m(-)(1)& sdot;K--(1). This fluidics approach offers a promising route to develop high-performance CNT materials comparable to CNT individuals.