摘要
开发具备高光热转换效率、快速响应和优异热管理性能的相变材料(PCMs)对有效利用太阳能具有重要意义。特别是开发柔性可卷曲和折叠的薄膜类相变材料,能够进一步拓展太阳能在便携和复杂形状结构的应用。本文采用电解析氢膨胀与原位浸渍协同的策略,将聚乙二醇(PEG)高效复合到碳纳米管(CNT)连续网络中,制备得到CNT网络分布均匀、PEG高负载(质量分数97.2%)的柔性复合相变薄膜。得益于CNT网络优异的光热转换能力与高导热特性,该薄膜能够高效捕获并快速实现光热转换、热量传输及热量均匀分布,展现出较高的蓄热能力(146.3 J·g^(-1))和光热转换性能(67.8%)。在-10~40℃的环境下,该薄膜呈现出良好的热调控性能,并具有卓越的柔韧性和优良的热稳定性。此外,本文还探讨了影响热管理效果的关键因素,为柔性热管理材料的开发和应用提供了新的思路。
The development of phase change materials(PCMs)with efficient photothermal conversion,rapid responsibility,and superior thermal management performance is important for effectively utilizing solar energy.In particular,designing flexible,rollable and foldable film PCMs can further expand the application of solar energy in portable and complex shaped structures.Herein,a synergistic approach combining the expansion and in-situ impregnation was used to integrate polyethylene glycol(PEG)into a continuous carbon nanotube(CNT)network,achieving a uniform CNT distribution and high PEG loading(Mass fraction 97.2%).Thanks to the excellent photothermal conversion ability and high thermal conductivity of the CNT network,the film was able to efficiently capture and rapidly realize the photothermal conversion,heat transfer and uniform heat distribution,and exhibited high thermal storage capacity(146.3 J·g^(-1))and photothermal conversion performance(67.8%).Under the environment of-10—40℃,the film showed good thermal regulation performance with excellent flexibility and good thermal stability.In addition,this paper discusses the key factors affecting the thermal management effect,which provided new ideas for the development and application of flexible thermal management materials.
作者
杨晓宇
赵静娜
李文雅
徐成勇
张永毅
李清文
张骁骅
YANG Xiaoyu;ZHAO Jingna;LI Wenya;XU Chengyong;ZHANG Yongyi;LI Qingwen;ZHANG Xiaohua(School of Science,Nanchang Institute of Technology,Nanchang 330099,China;Key Laboratory of Multifunctional Nanomaterials and Smart Systems,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China;School of Textile Science and Engineering,Xi'an Polytechnic University,Xi'an 710048,China;Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China)
出处
《复合材料学报》
北大核心
2026年第1期311-320,共10页
Acta Materiae Compositae Sinica
基金
国家自然科学基金面上项目(52373031)
陕西省教育厅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)。
关键词
碳纳米管网络
柔性相变薄膜
光热转换
储能
热管理
carbon nanotube networks
flexible phase change films
photothermal conversion
energy storage
thermal management
