以硬脂酸丁酯为芯材，2，4-甲苯二异氰酸酯（TDI）和三乙醇胺（TEA）为反应单体制备壁材，采用界面聚合法制备具有储热能力的聚氨酯微胶囊相变材料，并对所制微胶囊的表面形貌、红外结构、热稳定性、相变性能和致密性进行表征分析。结果表明，所制微胶囊呈球形结构均匀分布，熔融温度（ΔT_m）和熔融热焓（ΔH_m）分别为20.60℃和84.09 J/g，储热性能优异。热稳定性和致密性分析表明，当TEA质量为4.5 g、芯材完全失重时，微胶囊的质量保留率最高为52.6%，120℃持续烘干6 h，质量损失率最低仅为21.8%，表明所制备的微胶囊具有良好的热稳定性和致密性。

Polyurethane microencapsulated phase change materials (MicroPCMs) with a thermal storage capacity is successfully prepared via interfacial polymerization method by using butyl stearate as core material and using the shell materials made from 2,4-toluene diisocyanate (TDI) and triethanolamine (TEA).The surface morphology,infrared structure,thermal stability,phase change performance and compactness of the prepared microcapsules are characterized and analyzed.The results show that the microencapsulated phase change material has a spherical structure and distributes uniformly,with a melting temperature (ΔT_m) of 20.60℃ and a melting heat enthalpy (ΔH_m) of 84.09 J·g^-1,representing an excellent heat storage performance.Analysis on thermal stability and compactness shows that the mass retention rate of the microcapsule can reach the highest,52.6% as the amount of TEA is 4.5 g and the weight of the core material has been completely lost.After drying at 120℃ for 6 hours,the lowest mass loss rate is only 21.8%,indicating that the prepared microcapsules have good thermal stability and compactness.

辛成(1993-),男,硕士研究生,主要从事功能高分子材料的研究,xc6193@126.com