Abstract:

Microencapsulated phase change materials with 30^# paraffin as core material and melamine resin as capsule material were prepared by in-situ polymerization and were added to gypsum boards. The morphology，chemical structure and thermal performance of microcapsules were characterized by SEM，FTIR，DSC and TG methods，and the performance of gypsum board for energy storage was tested. The results showed that：paraffin content in the microcapsules was about 50.4%，and the phase transition temperature and enthalpy values were 30 ℃ and 108.7 J/g respectively. The microcapsule appearance is a smooth protruding surface，and particle sizes were between 10—20 μm. Microcapsules with good structure and thermal stability can enhance the energy storage performance of gypsum board.

摘要：

采用原位聚合法以30^#石蜡为芯材、密胺树脂（MF）为囊材，制备了具有相变储热功能的微胶囊，并将所制得微胶囊添加到石膏板中。采用SEM、FTIR、DSC和TG等手段对微胶囊外观形貌、化学结构和热性能进行了表征，并测试了石膏板储能性能。结果表明：制得微胶囊中石蜡平均含量约为50.4%，相变温度和相变潜热分别为30 ℃、108.7 J/g；微胶囊表面光滑有突起，粒径在10～20 μm；具有较好的外观结构和良好的热稳定性，能增强石膏板的保温性能。