Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (7): 46-51.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Preparation and Characterization of Microencapsulated Phase-Change Materials

Yuan Wen-hui1  Liu Du-shu1  Li Li2   

  1. 1. School of Chemical and Energy Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China;2. School of Environmental Science and Engineering , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-06-29 Online:2007-07-25 Published:2007-07-25
  • Contact: 袁文辉(1969-)，男，副教授，主要从事纳米材料等的研究. E-mail:cewhyuan@scut. edu.cn
  • About author:袁文辉(1969-)，男，副教授，主要从事纳米材料等的研究.
  • Supported by:

    教育部传热强化与节能重点实验室开放基金资助项目;广东省绿色化学品重点实验室资助项目

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Abstract:

Microencapsulated phase-change materials (MPCMs) were prepared by means of in-situ polymerization , with melamine-formaldehyde as the shell and n-octadecane as the core. The properties of the products were then analyzed and characterized by using optic microscope , SEM and DSC , and the effects of the emulsifier sort , the emulsifierdosage and the isocyanate addition on the properties of the prepared microcapsules were investigated. Experimental results show that the microcapsules prepared with nonionic emulsifier and anionic emulsifier are of better performances than those prepared only with one anionic emulsifier， that the addition of isocyanate greatly improves the latent heat of. MPCMs , and that the MPCMs with an average particle size of 4. 0 μm and a latent heat up to 176. 5 J/ g are of smooth morphologies , hundred-percent wrap and homogeneous size.

Key words: phase-change material, microcapsule, melamine-formaldehyde resin, in-situ polymerization, preparation, characterization