摘要
采用界面聚合的方法,以甲苯-2,4-二异氰酸酯(TDI)和乙二醇(EG)为反应单体,非离子表面活性剂聚乙二醇辛基苯基醚(OP-10)为乳化剂,合成以相变石蜡为囊芯聚氨酯为囊壁的微胶囊。利用电子扫描显微镜(SEM)和差示扫描量热仪(DSC)研究其表观形貌及热性能,其表面光滑,具有良好的热性能。将微胶囊以掺量为20%质量比例与建筑石膏复合,制成轻质相变潜热材料,通过温度循环试验表明:微胶囊相变储热石膏基建筑材料具有显著的储(放)热能力和良好的耐久性。
Polyurethan microcapsules containing phase change material, paraffin, were synthesized by means of interracial polymerization method with 2,4 toluene diisocyanate （TDI） and ethylene glycol（EG） as the monomers, Poctyl polyethylene glycol phenyl ether（OP-10） , a nonionic surfactant, as the emulsifier. Apparent morphology and thermal performance were analysed by scanning electron microscope （ SEM ） and differential scanning calorimeter （DSC） , respectively. The results show that the microcapsules have good thermal performance and smooth surface. The microcapsules with mass content of 20% are incorporated into gypsum to prepare latent heat storage gypsum building materials. As results of temperature cycle tests, the thermal storage gypsum which incorporated microcapsules can provide good thermal performance and durability.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2012年第12期2140-2144,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金面上项目(51172176)
关键词
界面聚合法
微胶囊
潜热材料
耐久性
interracial polymerization
microcapsules
latent heat materials
durability
