碳纳米管/聚乙二醇复合相变纤维的制备及其热性能  

Preparation and thermal properties ofcarbon nanotube/polyethyleneglycolcomposite phasechange fiber

作　　者：廖昙倩 李文雅 杨晓宇 赵静娜[2] 张骁骅 LIAO Tanqian;LI Wenya;YANG Xiaoyu;ZHAO Jingna;ZHANG Xiaohua(School of Textile Science and Engineering,Xi′an Polytechnic University,Xi′an,Shaanxi 710048,China;Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou,Jiangsu 215123,China;School of Science,Nanchang Institute of Technology,Nanchang,Jiangxi 330099,China;Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China)

机构地区：[1]西安工程大学纺织科学与工程学院,陕西西安710048 [2]中国科学院苏州纳米技术与纳米仿生研究所,江苏苏州215123 [3]南昌工程学院理学院,江西南昌330099 [4]东华大学纺织科技创新中心,上海201620

出　　处：《纺织学报》2025年第3期9-16,共8页Journal of Textile Research

基　　金：国家自然科学基金面上项目(52373031);陕西省教育厅2020重点研究计划产业用纺织品协同创新中心项目(20JY026);中国纺织工业联合会科技指导性项目(2022020);陕西省重点研发计划一般项目(2024GX-YBXM-569);东华大学博士科研基金项目(BS202105)。

摘　　要：为解决有机相变材料导热性能、力学性能、热稳定性差等问题,利用一维连续的宏观碳纳米管(CNT)纤维作为增强骨架,采用电化学析氢膨胀技术原位浸润聚乙二醇(PEG)制备了CNT/PEG复合相变纤维,并对其结构和热力学性能进行分析。结果表明:CNT/PEG复合相变纤维表面光滑、结构均匀,PEG负载量达94%以上;CNT的网络结构还促进了不同分子质量PEG的协同结晶,复合相变纤维的相变温度可在9.2~24.7℃范围内进行调控,相变焓最高达168.2 J/g,在120次热循环后仍具有优异的稳定性;得益于CNT出色的光吸收能力,复合相变纤维的光热转换效率达63.5%;复合相变纤维呈现出优异的力学和电学性能,断裂强度最高可达412 MPa,断裂伸长率可达17.0%,电阻值稳定;使用高透明疏水性材料对复合相变纤维进行封装,解决了PEG在空气中的吸湿问题,且不影响复合相变纤维的光热特性。Objective Multifunctional fibrous phase change materials,namely PCM fibers,are a promising candidate for energy storage and thermal management applications,especially the wearable and flexible devices.The future development of PCM fibers requires efficient and facile energy conversion,high density storage capacity,and the cap ability to respond different stimuli.However,the inherent shortcomings of the organic PCM make it still challenging to simultaneously realize both solar energy conversion and energy storage.Thus,the appropriate incorporation or composition of carbon nanotubes(CNTs)into organic PCMs has been considered an effective solution to solve the above problems.Method A cooperative in situ impregnation is adopted to simultaneously introduce polyethylene glycol(PEG)into CNT network framework,resulting in a CNT/PEG composite PCM fiber.In this strategy,a pre-densified CNT fiber is used as the CNT framework.During an electrolysis-induced expansion,the CNT scaffold is expanded by orders of magnitude with the network structure well maintained.Therefore,organic PCM(with different molecule weight)molecules can be simultaneously impregnated into the expanded CNT scaffold.After the composition and post-spinning,a continuous composite fiber was obtained.Results Such strategy can result in a nearly ideal composite structure,including:1)the organic PCM can be loaded at super high mass fractions,up to 94%;2)PCM molecules are uniformly introduced into the CNT scaffold;3)The CNT scaffold provided the excellent pathways to conduct heat,electrons and stresses,leading to the greatly enhanced thermal performance(including the phase change as well)and superior mechanical,and electrical properties;4)the network structure provides the perfect solution for the liquid leakage;5)the composite PCM fiber exhibits superior cyclic stability.Besides these overall advantages,the crystallinity,phase change temperatures,the phase change enthalpies can also be precisely regulated to meet different requirements.Conclusion This study prov

关 键 词：智能调温纺织品 相变纤维 碳纳米管纤维 原位复合 相变储能 光热转换 封装 

分 类 号：TS102.5[轻工技术与工程—纺织工程] TS151[轻工技术与工程—纺织科学与工程]