Progress on Research of Preparation and Application of Paraffin-Based Phase Change Microcapsules
Paraffin-based phase change microcapsules have the advantages of large latent heat of phase change,small supercooling degree,good chemical stability,wide availability and low cost,and have become a research hotspot in recent years.In this paper,three kinds of preparation methods of paraffin-based phase change microcapsules were introduced:chemical method,physical-mechanical method and physical-chemical method.The chemical method includes in-situ polymerization,suspension polymerization,emulsion polymerization and interfacial polymerization.The physical-mechanical method includes spray drying method and solvent evaporation method.The physical-chemical method includes sol-gel method and condensation method.The effects of the above methods on the melting enthalpy,encapsulation efficiency and thermal conductivity of the prepared microcapsules were summarized.Then,the application status of this kind of microcapsules in the fields of building energy saving,solar energy,textiles and so on was expounded.Finally,the future research direction was prospected.
NETL
NSTL
万方数据
