定形脂肪酸的配制及热性能的研究  

Research on preparation and thermal storage property of the shape-stabilized fatty acid

作　　者：闫全英[1] 刘莎[1] 张林[1] 王随林[1] 

机构地区：[1]北京建筑大学环境与能源工程学院,北京市供热供燃气通风及空调重点试验室,北京100044

出　　处：《新型建筑材料》2016年第12期87-90,共4页New Building Materials

基　　金：北京市自然科学基金资助项目(3122012);北京市教委科技创新能力提升计划项目(PXM2016_014210_000016)

摘　　要：配制了癸酸分别与肉豆蔻酸、月桂酸、棕榈酸和硬脂酸混合得到的4种脂肪酸混合物以及液体石蜡与月桂酸混合而成的相变材料混合物，并以高密度聚乙烯为支撑材料，添加50％-90％的相变材料制备了定形相变材料。利用差示扫描量热仪实验研究了5种定形脂肪酸混合物的相变温度、相变潜热、均匀性与稳定性，旨在寻找适合相变墙体储能用的定形相变材料。结果表明：定形相变材料的相变温度和相变潜热与脂肪酸的组分及含量有关，定形相变材料中脂肪酸的最佳含量为70％；定形脂肪酸相变材料的均匀性和稳定性较好，适合在相变墙体中使用。In the paper,four kinds of fatty acid binary mixtures and liquid paraffin and laurie acid binary mixture were prepared. Fatty acid binary mixtures were made of capric acid and myristic acid,lauric aeid,palmitie acid and stearic acid. High- density polyethylene was used as supporting material with 50%-90% phase change materials to prepare the shape-stabilized phase change materials. The phase change temperatures,the phase change latent heats,the uniformity and stability of the 5 kinds of shape-stabilized phase change materials were studied experimentally by using differential scanning calorimeter（DSC）,the aim was to find suitable phase change materials for phase change wall energy storage. The results showed that the phase change temperatures and the phase change latent heats were related to the components and contents of fatty acids. The optimum content of fatty acid in the shape-stabilized phase change material was 70%. The homogeneity and stability of the shape-stabilized fatty acid phase change materials were better, and they are suitable for use in phase change wall.

关 键 词：定形相变材料 脂肪酸 相变温度 相变潜热 

分 类 号：TU53[建筑科学—建筑技术科学] TK02[动力工程及工程热物理]