微胶囊相变蓄冷材料的制备及其性能研究

阐述了微胶囊相变蓄冷材料的制备方法及其性能。采用复合凝聚法制备了微胶囊相变蓄冷材料。用明胶和阿拉伯胶作囊材、十四烷作芯材,使用示差扫描量热仪(DSC)来测定蓄冷材料的熔化温度、熔化潜热、凝固温度、凝固潜热,用热重分析仪(TG)测定其热稳定性,并用扫描电镜(SEM)观测了材料的微相结构。测试结果表明,该相变蓄冷材料具有较高的相变潜热和较好的热稳定性,可用作空调的蓄冷材料。

STUDY ON THE PREPARATION AND PERFORMANCE OF THE MICROCAPSULE PHASE CHANGE MATERIAL FOR COOL STORAGE

The preparation and performance of the microcapsule phase change material for cool storage are inve stigated.The microcapsule phase change material for cool storage is prepared by complex coacervation method with gelatin and acacia as wall materials,tetradecane(C14H30) as a core material in an emulsion system.The Differenti al Scanning Calorimeter(DSC) was used to determine the melting temperature,the melting latent heat,the freezin g temperature,the freezing latent heat.The thermogravimetry(TG) was used to determine the thermal stability of t he microcapsule phase change material for cool storage.The Scanning Electron Microscope(SEM) was used to vie w the microstructure.The results show that the microcapsule phase change material for cool storage has larger phase change latent heat and better thermal stability,so it can be considered as an efficient cool storage material fo r air conditioning system.