摘要
利用廉价的三聚氰胺脲醛树脂为壳材料,低熔点石蜡为芯材,用原位聚合的方法成功制备了三聚氰胺脲醛树脂石蜡微胶囊.通过正交实验优化,微胶囊石蜡质量含量达到61·78%,包裹率达到94·15%.用差示扫描量热仪(DSC)考察了微胶囊相变材料的热性能,其相变温度和焓值分别为12·53℃、137·16J·g-1.以Washburn方程为理论根据考察了微胶囊相变材料的亲水性质,其亲水性随石蜡含量增加而降低.
A microencapsulated phase change material （PCM） was prepared by the irrsitu polymerization method using low melting point paraffin and melamine-urea-formaldehyde prepolymer as core material and shell material respectively. Through optimization by orthogonal test, 94.15% paraffin was encapsulated and the microcapsule containing 61.78% paraffin was prepared successfully. Differential scanning calorimeter （DSC） was used to study the thermal properties of the microencapsulated PCM, and the results showed that the melt point and enthalpy were 12. 53℃ and 137. 16 J ·g^-1, respectively. In addition, the hydrophilic-lipophilic properties of the microencapsulated phase change material was also investigated with the Washburn equation, and the result showed that the hydrophilicity of the PCM reduced with increasing content of paraffin in the PCM.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2006年第12期2991-2996,共6页
CIESC Journal
基金
国家重点基础研究发展计划项目(G2000026409)
北京市教育委员会共建资助项目~~
关键词
潜热储能
正交实验
微胶囊
石蜡
相变材料
latent heat storage
orthogonal test
microcapsule
paraffin
phase-change material
