碳纳米管/聚乙二醇复合相变纤维的制备及其热性能

doi:10.13475/j.fzxb.20240304501

纺织学报 ›› 2025, Vol. 46 ›› Issue (03): 9-16.doi: 10.13475/j.fzxb.20240304501

碳纳米管/聚乙二醇复合相变纤维的制备及其热性能

廖昙倩¹^,², 李文雅¹(), 杨晓宇³, 赵静娜², 张骁骅⁴

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

收稿日期:2024-03-18 修回日期:2024-09-29 出版日期:2025-03-15 发布日期:2025-04-16
通讯作者: 李文雅(1988—),女,讲师,博士。主要研究方向为特种纺纱方法及其设备研发、纺织材料高值回收再利用、高性能纤维纺纱工艺及产品设计。E-mail:leewya@126.com。
作者简介:廖昙倩(2001—),女,硕士生。主要研究方向为功能性复合材料及纺织品的研发与应用。
基金资助:
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)

Preparation and thermal properties of carbon nanotube/polyethylene glycol composite phase change fiber

LIAO Tanqian¹^,², LI Wenya¹(), YANG Xiaoyu³, ZHAO Jingna², ZHANG Xiaohua⁴

1. School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
2. Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, Jiangsu 215123, China
3. School of Science, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China
4. Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China

Received:2024-03-18 Revised:2024-09-29 Published:2025-03-15 Online:2025-04-16

摘要/Abstract

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。

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

Abstract:

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 provides a new strategy for the design and construction of composite PCMs based on CNT networks for high efficient photothermal conversion, by virtue of the presence of CNT network, the obtained PCM fiber with the characteristics of high loading (up to 94%) and uniformly compounding, exhibits superior mechanical, electrical and thermal properties, and high cap abilities of energy conversion and storage, favourable thermal cycling and shape stability. All of these characteristics provide a new types of multifunctional fiber for the development of advanced wearable thermal management textile.

Key words: intelligent temperature control textile, phase change fiber, carbon nanotube fiber, in situ composite, phase change energy storage, photothermal conversion, encapsulation

中图分类号:

TS102.5

廖昙倩, 李文雅, 杨晓宇, 赵静娜, 张骁骅. 碳纳米管/聚乙二醇复合相变纤维的制备及其热性能[J]. 纺织学报, 2025, 46(03): 9-16.

LIAO Tanqian, LI Wenya, YANG Xiaoyu, ZHAO Jingna, ZHANG Xiaohua. Preparation and thermal properties of carbon nanotube/polyethylene glycol composite phase change fiber[J]. Journal of Textile Research, 2025, 46(03): 9-16.

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链接本文: http://www.fzxb.org.cn/CN/10.13475/j.fzxb.20240304501

http://www.fzxb.org.cn/CN/Y2025/V46/I03/9

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试样编号	熔融温度/ ℃		熔融焓值/ (J·g^-1)		结晶温度/ ℃		结晶焓值/ (J·g^-1)
试样编号	试样	PEG	试样	PEG	试样	PEG	试样	PEG
1	24.1	25.5	134.2	136.4	9.2	10.6	136.4	139.3
2	41.8	40.6	147.6	150.1	14.4	11.7	152.3	156.7
3	46.1	45.5	155.0	159.0	17.4	16.9	157.1	166.5
4	52.3	47.7	162.0	168.1	16.1	17.9	165.1	171.2
5	53.5	51.9	167.3	173.0	24.7	20.9	168.2	188.0

试样编号	直径/ μm	断裂强度/ MPa	断裂伸长率/%	电阻/Ω	电导率/ (10⁴ S·m^-1)	热导率/ (W·m^-1·K^-1)
1	224	412	11.5	73.9	1.72	29.0
2	258	301	11.7	66.2	1.45	28.4
3	270	239	12.0	83.0	1.05	27.0
4	236	219	12.5	79.3	1.44	24.0
5	381	211	17.0	75.8	0.58	22.0

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 of carbon nanotube/polyethylene glycol composite phase change fiber

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