Microencapsulation of n-eicosane as energy storage material
Data(s) |
01/05/2004
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Resumo |
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 degreesC, respectively. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
兰孝征;谭志诚;邹光龙;孙立贤;张涛.Microencapsulation of n-eicosane as energy storage material,CHINESE JOURNAL OF CHEMISTRY(中国化学),2004,22(5):411-414 |
Palavras-Chave | #phase change material #n-eicosane #microcapsule #interfacial polymerization #heat energy storage #thermal analysis |
Tipo |
期刊论文 |