首页|芳纶纳米纤维增强的碳纳米管复合纤维

芳纶纳米纤维增强的碳纳米管复合纤维

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利用浮动催化化学气相沉积法可以将性能优异的碳纳米管(CNT)组装成碳纳米管纤维(CNTF),但如何有效增强碳纳米管纤维内部碳纳米管及其管束之间的相互作用力,以大幅提升其力学和电学性能,是该领域的一个重要难题.本文提出通过溶剂质子化策略,将芳纶纳米纤维引入碳纳米管纤维,制备得到了高性能的碳纳米管复合纤维材料,其拉伸强度达到1.23 GPa,杨氏模量达到26.97 GPa,相较于初始的碳纳米管纤维分别提升了 92.1％和133.5％.该复合纤维的比强度和比模量分别为28.67和628.67 cN/dtex,与芳纶纤维等高性能纤维相当.此外,该复合纤维兼具良好的柔性与电学性能,可以直接作为纤维电子器件的电极材料,展现出良好的应用潜力.
Carbon Nanotube Composite Fiber Reinforced by Aramid Nanofibers
Carbon nanotubes(CNT)can be assembled into carbon nanotube fibers(CNTF)by floating catalytic chemical vapor deposition,but it remains challenging to effectively enhance the interaction force between carbon nanotubes and their bundles inside carbon nanotube fibers to effectively improve mechanical and electrical properties.In this study,we proposed to introduce aramid nanofibers into carbon nanotube fibers through solvent protonation to obtain high-performance carbon nanotube composite fibers.The composite fibers exhibited tensile strength of 1.23 GPa and the Young's modulus of 26.97 GPa,which were improved by 92.1％and 133.5％compared with the original carbon nanotube fibers,respectively.The specific strength and specific modulus of the composite fibers were 28.67 and 628.67 cN/dtex,which were comparable to those of high-performance fibers such as aramid fiber.In addition,the composite fibers showed good flexibility and electrical conductivity,which can be directly used as the electrode material in fiber electronic devices,showing good application potential.

Carbon nanotube fiberAramid nanofiberHydrogen bondPolymer composite fiber

孙虹纪、蒋鸿宇、刘沛雨、杨哲、张琨、陈培宁、彭慧胜

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聚合物分子工程国家重点实验室复旦大学高分子科学系纤维材料与器件研究院先进材料实验室 上海 200438

碳纳米管纤维 芳纶纳米纤维 氢键 高分子复合纤维

国家重点研发计划国家重点研发计划国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金上海市科委重点项目上海市科委重点项目

2022YFA12030012022YFA1203002T232100322335003T2222005221750422151110490020JC1414902

2024

10.11777/j.issn1000-3304.2024.24015

高分子学报
中国科学院化学研究所 中国化学会

高分子学报

CSTPCD北大核心
影响因子：0.844
ISSN：1000-3304
年,卷(期)：2024.55(7)
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