Qiao Jiaxin, He Chonglin, Guo Zijiao, Lin Fankai, Liu Mingyong, Liu Xianjie, Liu Yifei, Huang Zhaohui, Mi Ruiyu, Min Xin
Engineering Research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of Resources, Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China.
Beijing Jingneng Clean Energy Co., Ltd., Beijing Branch, Beijing 100020, China.
Materials (Basel). 2024 Oct 11;17(20):4963. doi: 10.3390/ma17204963.
Personal thermal management materials integrated with phase-change materials have significant potential to satisfy human thermal comfort needs and save energy through the efficient storage and utilization of thermal energy. However, conventional organic phase-change materials in a solid state suffer from rigidity, low thermal conductivity, and leakage, making their application challenging. In this work, polyethylene glycol (PEG) was chosen as the phase-change material to provide the energy storage density, polyethylene oxide (PEO) was chosen to provide the backbone structure of the three-dimensional polymer network and cross-linked with the PEG to provide flexibility, and carbon nanotubes (CNTs) were used to improve the mechanical and thermal conductivity of the material. The thermal conductivity of the composite fiber membranes was boosted by 77.1% when CNTs were added at 4 wt%. Water-resistant modification of the composite fiber membranes was successfully performed using glutaraldehyde-saturated steam. The resulting composite fiber membranes had a reasonable range of phase transition temperatures, and the CCPCF-55 membranes had melting and freezing latent heats of 66.71 J/g and 64.74 J/g, respectively. The results of this study prove that the green CCPCF-55 composite fiber membranes have excellent flexibility, with good thermal energy storage capacity and thermal conductivity and, therefore, high potential in the field of flexible wearable thermal management textiles.
与相变材料集成的个人热管理材料在满足人类热舒适需求以及通过高效存储和利用热能来节能方面具有巨大潜力。然而，固态的传统有机相变材料存在刚性大、热导率低和泄漏等问题，这使得它们的应用具有挑战性。在这项工作中，选择聚乙二醇（PEG）作为相变材料以提供储能密度，选择聚环氧乙烷（PEO）来提供三维聚合物网络的主链结构并与PEG交联以提供柔韧性，并且使用碳纳米管（CNT）来提高材料的机械性能和热导率。当以4 wt% 添加CNT时，复合纤维膜的热导率提高了77.1%。使用戊二醛饱和蒸汽成功地对复合纤维膜进行了防水改性。所得的复合纤维膜具有合理的相变温度范围，CCPCF - 55膜的熔化潜热和凝固潜热分别为66.71 J/g和64.74 J/g。本研究结果证明，绿色的CCPCF - 55复合纤维膜具有出色的柔韧性，具有良好的热能存储能力和热导率，因此在柔性可穿戴热管理纺织品领域具有很高的潜力。
