化工学报2025，Vol.76Issue(z1)：444-452,封2,10.DOI:10.11949/0438-1157.20241247
乳化剂和温度对相变微胶囊性能的影响分析
Effects of emulsifier and reacting temperature on characteristics of phase change microcapsules
摘要
Abstract
In order to solve the problem of low energy storage and release efficiency,and to decrease both supercooling and superheat of heat exchangers due to large supercooling of ice,the preparation of phase change materials with low supercooling is a hotspot recently.It is an efficient solution to encapsulate n-tetradecane in a stable polystyrene shell.Based on our previous study on types and concentrations of crosslinking agents,the effects of hydrophilic-lipophilic balance of compound emulsifiers and reacting temperatures on the morphology and properties of phase change microcapsules were explored.The results show that when the reacting temperature was 60℃,the particle size increased from 2.735 μm to 24.690 μm with the increase of hydrophilic-lipophilic balance from 16.50 to 40.00.When the hydrophilic-lipophilic balance was 26.50,the particle size increased from 2.735 μm to 23.491 μm with the increase of reacting temperature from 60℃to 80℃.And the surface morphologies of all m-PCMs was smooth.All the results showed that the microcapsules could provide the best thermal performance(148.12 J/g)and the smallest particle size(2.735 μm),when the concentration of the compound crosslinker was 1.0%,the emulsifier hydrophilic-lipophilic balance value was 26.50 and the reaction temperature was 60℃.关键词
相变微胶囊/乳化剂/亲水亲油平衡值/相变潜热/自由基反应/聚合Key words
phase change microcapsules/emulsifier/HLB/latent heat of phase change/radical reaction/polymerization分类
能源与动力引用本文复制引用
张圣美,李明,张莹,易茜,杨依婷,刘雅莉..乳化剂和温度对相变微胶囊性能的影响分析[J].化工学报,2025,76(z1):444-452,封2,10.基金项目
云南省基础研究计划项目(202301AT070082),云南省青年人才专项项目 （202301AT070082）
