Preparation and Performance of Nanoencapsulated Phase Change Materials by Ultrasonic Radiation

摘要：

Nanoencapsulated phase change materials (NEPCMs) with polystyrene (PS) as shell and n-dotriacontane (DOt) as core were synthesized by ultrasonically initiated free radical-catalyzed in situ miniemulsion polymerization. The influence of the ultrasonic power, time and temperature, the emulsifier and the ratio of monomer to core on reaction was systematically investigated. The morphology and performance of nanocapsules were characterized using laser particle size analyzer, differential scanning calorimeter (DSC) and transmission electron microscopy (TEM). The result showed that PS / Dot nanocapsules with regular sphere shape can be successfully synthesized by ultrasonic radiation. The average size of NEPCMs was 168nm and the phase change enthalpy reached 174.8 kJkg-1. The specific heat capacity of the NEPCMs latex was about 6.08J·kg-1. It indicates that the synthetic NEPCMs latex is promising as a latent functionally thermal fluid.

关键词： Nanocapsule phase change materials ultrasonic radiation miniemulsion functionally thermal fluid

作者: Yutang Fang Guo Yang Hong Liu Xuenong Gao Zhengguo Zhang

作者单位: Key Lab of heat transfer and Energy Conservation, South China University of Technology, Guangzhou 510640, China

会议类型: 国际会议

会议名称: 4th International Symposium on Heat Transfer and Energy Conservation(第四届传热与节能国际研讨会 ISHTEC2012)

会议地点: 广州

会议语种:英文

页码: 1-4

在线出版日期: 2012-01-06（万方平台首次上网日期，不代表论文的发表时间）