以硬脂酸丁酯为囊芯材料，异佛尔酮二异氰酸酯（IPDI）、二乙烯三胺（DETA）、季戊四醇为单体，采用界面聚合法制备一种新型网状结构囊壁微胶囊化相变材料。利用扫描电子显微镜（SEM）、傅里叶变换红外光谱仪（FT-IR）、热重同步分析仪（TG）和差式扫描量热仪（DSC）对所制备微胶囊的表面形貌、化学结构、热稳定性和储热性能进行表征。结果表明，胶囊化后相变材料的熔融温度基本没有发生改变，熔融热焓明显降低，这与胶囊囊芯的质量分数降低有关。

A novel microencapsulated phase change materials (MEPCMs) with a reticulated cyst shell are prepared by interfacial polymerization method using butyl stearate as core material,and isophorone diisocyanate (IPDI),diethylene triamine (DETA) and pentaerythritol as monomers.The surface morphology,chemical structure,thermal stability and heat storage properties of MEPCMs are investigated by scanning electron microscopy (SEM),Fourier transform infrared spectroscopy (FT-IR),thermo gravimetric analysis (TG) and differential scanning calorimeter (DSC).The results indicate that after encapsulation,the melting temperature of the materials remains unchanged but the fusion enthalpy drops significantly,which is related to the decrease of mass fraction of capsule core.

申天伟(1994-),男,硕士研究生,研究方向为功能高分子材料,stw9403@163.com。