潜热蓄热用微胶囊化脂肪酸相变材料

Microencapsulation of fatty acid as phase change material for latent heat storage

摘要:

采用原位聚合法以蜜胺树脂为壳材合成了芯壁质量比为1:1的十二酸相变材料微胶囊，利用FT-IR、DSC、SEM等表征方法分别研究了微胶囊的红外特征吸收光谱、热性能、表面形貌及粒径大小等性质。结果表明，所得相变材料微胶囊是内部为微孔网状结构、表面平整光滑的球形颗粒，其熔点和熔融焓分别为43.7℃和84.96J•g-1，可作为蓄热材料应用于实际的潜热蓄热体系。

Abstract:

A kind of latent heat storage microcapsule was prepared using lauric acid as core and melamine-formaldehyde resin as shell via in-situ polymerization. The core-to-shell mass ratio was 1:1. The chemical composition, thermal properties and surface morphology of the obtained microcapsules were characterized by FT-IR, DSC and SEM, respectively. The results show that the obtained microcapsules have spherical appearance and porous network structures. The melting point and fusion enthalpy of the microcapsules are 43.7℃ and 84.96J•g-1, respectively, which mean the microcapsules possess a good potential as a latent heat storage material in latent heat thermal storage applications.