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Microencapsulation of n-Eicosane as Energy Storage Material
作者姓名:蓝孝征  谭志诚  邹光龙  孙立贤  张涛
作者单位:ThermochemistryLaboratory,DalianInstituteofChemicalPhysics,ChineseAcademyofSciences,Dalian,Liaoning116023,China
基金项目:Project supported by the National Natural Science Foundation of China (No. 20373072).
摘    要:For heat energy storage application, polynrea microcapsules containing phase change material, n-eicosane, were synthesized by using interfacial polymerization method with toluene-2,4-diisocyanate (TDI) and diethylenetriamine(DETA) as monomers in an emulsion system. Poly(ethylene glycol)octyl-phenyl ether (OP), a nonionic surfactant,was the emulsifier for the system. The experimental result indicates that TDI was reacted with DETA in a mass ratio of 3 to 1. FF-IR spectra confirm the formation of wall material, polyurea, from the two monomers, TDI and DETA.Encapsulation efficiency of n-eicosane is about 75%. Microcapsule of n-eicosane melts at a temperature close to that of n-eicosane, while its stored heat energy varies with core material n-eicosane when wall material fixed.Thermo-gravimetric analysis shows that core material n-eicosane, micro-n-eicosane and wall material polyurea can withstand temperatures up to 130, 170 and 250℃, respectively.

关 键 词:n-二十碳烷  贮能材料  微胶囊化  热分析  相变材料  表面聚合

Microencapsulation of n-Eicosane as Energy Storage Material
LAN,Xiao-Zheng TAN,Zhi-Cheng ZOU,Guang-Long SUN,Li-Xian ZHANG,TaoThermochemistry Laboratory,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,Liaoning ,China.Microencapsulation of n-Eicosane as Energy Storage Material[J].Chinese Journal of Chemistry,2004,22(5):411-414.
Authors:LAN  Xiao-Zheng TAN  Zhi-Cheng ZOU  Guang-Long SUN  Li-Xian ZHANG  TaoThermochemistry Laboratory  Dalian Institute of Chemical Physics  Chinese Academy of Sciences  Dalian  Liaoning  China
Institution:LAN,Xiao-Zheng TAN,Zhi-Cheng* ZOU,Guang-Long SUN,Li-Xian ZHANG,TaoThermochemistry Laboratory,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,Liaoning 116023,China
Abstract:For heat energy storage application, polyurea microcapsules containing phase change material, n‐eicosane, were synthesized by using interfacial polymerization method with toluene‐2,4‐diisocyanate (TDI) and diethylenetriamine (DETA) as monomers in an emulsion system. Poly(ethylene glycol)octyl‐phenyl ether (OP), a nonionic surfactant, was the emulsifier for the system. The experimental result indicates that TDI was reacted with DETA in a mass ratio of 3 to 1. FT‐IR spectra confirm the formation of wall material, polyurea, from the two monomers, TDI and DETA. Encapsulation efficiency of n‐eicosane is about 75%. Microcapsule of n‐eicosane melts at a temperature close to that of n‐eicosane, while its stored heat energy varies with core material n‐eicosane when wall material fixed. Thermo‐gravimetric analysis shows that core material n‐eicosane, micro‐n‐eicosane and wall material polyurea can withstand temperatures up to 130, 170 and 250 °C, respectively.
Keywords:phase change material  n-eicosane  microcapsule  interfacial polymerization  heat energy storage  thermal analysis
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