Wet Twisting in Spinning for Rapid and Cost‐Effective Fabrication of Superior Carbon Nanotube Yarns

Author:

Zhao Xu1,Kong Derui12,Tao Jinlong1,Kong Na3,Mota‐Santiago Pablo4,Lynch Peter A.56,Shao Yanqiu7,Zhang Jizhen156ORCID

Affiliation:

1. Agricultural Products Processing Research Institute Chinese Academy of Tropical Agricultural Sciences Zhanjiang 524001 China

2. School of Textile and Material Engineering Dalian Polytechnic University Dalian 116034 China

3. School of Life and Environmental Science Centre for Sustainable Bioproducts Deakin University Geelong Victoria 3216 Australia

4. MAX IV Laboratory Lund University Lund 22100 Sweden

5. Institute for Frontier Materials Deakin University Geelong Victoria 3216 Australia

6. Manufacturing BU Commonwealth Scientific and Industrial Research Organization (CSIRO) Waurn Ponds VIC 3216 Australia

7. College of Chemistry and Chemical Engineering Mu Danjiang Normal University Mudanjiang 157011 China

Abstract

AbstractCarbon nanotubes (CNTs) are promising blocks for building advanced yarns with unique structural and functional attributes. However, the complexity of fabrication and high cost has hindered the widespread adoption of CNT yarns. In this study, a rapid and continuous twisting wet spun yarn strategy to produce highly densified CNT yarns is presented. The method involves effectively dispersing CNTs in the surfactant dispersion, swiftly removing the surfactant in the coagulation bath and twisting treatment to effectively improve the density of yarn and the orientation of CNT. Detailed characterizations on the influence of each spinning conditions reveal that twisting treatment significantly enhances the packing density of yarns, improves the orientation of CNTs, and mitigates the impact of impurities on conductivity. The resulting CNT yarns exhibit a remarkable tensile strength of 600 MPa, a Young's modulus of ≈40 GPa, and a high conductivity of 8990 S cm−1. When utilized as a yarn heater, the CNT yarn demonstrates an ultra‐fast electrothermal response of over 1000 °C s−1 at a low operating voltage of 5 V. Impressively, the mechanical properties of CNT yarns show good stability during heating. This study provides a perspective of structural engineering for the large‐scale preparation of high‐performance CNT yarns.

Funder

National Natural Science Foundation of China

Central Public-interest Scientific Institution Basal Research Fund for Chinese Academy of Tropical Agricultural Sciences

Publisher

Wiley

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