【摘要】 以液体石蜡为囊芯材料,三聚氰胺尿素甲醛树脂(MUF)为囊壁材料,采用原位聚合法制备MUF/石蜡微胶囊,探讨了反应温度和搅拌速度对MUF/石蜡微胶囊的影响。随着反应温度增高,微胶囊囊壁厚度增大,调节微胶囊搅拌速度可以控制微胶囊粒径。采用光学显微镜观察了微胶囊的形成过程,采用扫描电子显微镜和红外光谱表征了微胶囊表面形貌与化学结构,采用DSC分析其储热性能特征,结果表明MUF/石蜡微胶囊强度好,封闭性能好,储能性能好,可以作为相变储能材料进行应用研究。更多还原

【Abstract】 With using the liquid paraffin as capsule core material and melamine-urea-formaldehyde resin( MUF) as the capsule shell material,the MUF/paraffin microcapsule was prepared by in situ polymerization method. The effects of reaction temperature and stirring speed on the MUF/paraffin microcapsules were discussed. With the increasing reaction temperature, the capsule shell of MUF/paraffin microcapsules was becoming thicker. Adjusting the stirring speed could control the particle size of microcapsule. The formation of the microcapsules was observed through optical microscopy( OM). The surface morphology and chemical structure of microcapsules were characterized through scanning electron microscopy( SEM) and Fourier-transform infrared spectroscopy( FTIR) respectively. The characteristic of thermal storage was analyzed through DSC curves. The results showed that the MUF/paraffin microcapsules could be used as phase change energy storage materials for further application research which had a good strength, sealing performance and energy storage performance.更多还原