烷烃相变微胶囊的制备及其凝固研究进展

Review on preparation and solidification ofalkane phase-change microcapsules

烷烃相变微胶囊具有化学性能稳定、储能密度高,相变温度可选等特点,是相变储能和强化换热技术常用的一类材料,在新能源利用、电子电器散热、建筑节能等领域有着广泛应用。烷烃微胶囊的相变储能和传热性能与其凝固相变过程密切相关。分析总结了近年来国内外关于烷烃微胶囊凝固性能、成核机制以及影响因素的研究进展,并指出获取尺寸均匀和成份可控的烷烃微胶囊是开展凝固研究的重要前提。

Alkane phase-change microcapsules have unique properties,such as chemical and thermal stability,high latent heat storage density and suitable phase change temperature,which greatly promote their application in new energy utilization,heat dissipation technology and building energy-saving technology.The roles that alkane phase-change microcapsules play in enhancing the energy storage and heat transfer performance are closely related to their solidification process.This paper mainly introduces the solidification performance of alkane phase-change microcapsules,systematically discusses the control factors and mechanisms contributing to the microcapsule solidification,and points out that achieving the homogeneity in geometric and chemical structures of the microcapsules is an important prerequisite for exploring the nucleation mechanisms and factors influencing the solidification of alkane phase-change microcapsules.