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

采用原位聚合法以蜜胺树脂为壁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FTIR、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84.96 J/g,可作为蓄热材料应用于实际的潜热蓄热体系。

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 FTIR,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 84.96 J/g,respectively,which mean the microcapsules possess a good potential as a latent heat storage material in latent heat thermal storage applications.