摘要
本研究旨在制备一种适用于多种热能储存系统中的高效蓄热调温材料,通过乳液聚合技术将癸酸-月桂酸(CA-LA)低共熔混合物封装在聚丙烯酸乙酯(PEA)壳层中,形成PEA/(CA-LA)相变材料微胶囊(MEPCM).分析结果表明,所制备的MEPCM具有均匀且光滑的球形外观,且芯材和壳材之间没有发生化学反应.当壳芯比为1∶1.5时,熔化潜热和凝固潜热分别为81.85 J/g和88.68 J/g.MEPCM潜热储存能力随着芯材比例的增加而增加.通过热重分析和泄漏测试发现MEPCM在160℃以下能保持优良的潜热储存和释放能力.经过200次热循环后仍具有良好的热稳定性,具备实际应用价值.
The aim of this study is to develop an efficient heat storage and temperature regulating material suitable for a variety of thermal energy storage systems.The capric acid-lauric acid(CA-LA)low eutectic mixture was encapsulated in a poly(ethyl acrylate)(PEA)shell through emulsion polymerization to form PEA/(CA-LA)phase change material microcapsule(MEPCM).Analysis results demonstrate that the prepared MEPCM exhibits a uniform and smooth spherical appearance,with no chemical reaction occurring between the core and shell materials.At a shell-core ratio of 1∶1.5,the latent heat of melting and solidification are 81.85 J/g and 88.68 J/g,respectively.The latent heat storage capacity of MEPCM increases with an increase in core material ratio.Through thermogravimetric analysis and leakage testing,it is observed that MEPCM maintains excellent latent heat storage and release ability below 160℃.Even after 200 thermal cycles,it still demonstrates good thermal stability and practical application value.
作者
曾丽萍
杨新杰
代雪冰
陈晓
苏欢
ZENG Liping;YANG Xinjie;DAI Xuebing;CHEN Xiao;SU Huan(School of Smart Construction and Energy Engineering,Hunan Institute of Engineering,Xiangtan 411104,China;Hunan Engineering Research Center of Energy Saving and Material Technology of Green and Low Carbon Building,Xiangtan 411104,China)
出处
《湖南大学学报(自然科学版)》
北大核心
2025年第4期204-212,共9页
Journal of Hunan University:Natural Sciences
基金
国家重点研发项目(2018YFE0111200)
湖南省自然科学基金资助项目(2022JJ30194,2023JJ50027)
湖南省研究生科研创新项目(CX20231293)。
关键词
相变材料
微胶囊
癸酸-月桂酸
聚丙烯酸乙酯
phase change materials
microcapsules
capric acid-lauric acid(CA-LA)
poly(ethyl acrylate)(PEA)
