癸酸-肉豆蔻酸相变储热微胶囊的制备与表征

关键字：癸酸,肉豆蔻酸,相变,储热,微胶囊,制备

（江汉大学 光电化学材料与器件教育部重点实验室，化学与环境工程学院，湖北 武汉  430056）

    摘要：以癸酸-肉豆蔻酸低共熔物为芯材，采用溶剂蒸发法制备热塑性树脂为壁材的相变材料微胶囊，并对微胶囊的表面形貌、化学结构和热性能等进行表征，考察了壁材对微胶囊性质的影响。结果表明，当采用聚甲基丙烯酸甲酯（PMMA）为壁材时，所制微胶囊结构完好，且具有较好的热稳定性，囊芯含量为18.95%，相变温度为29.21 ℃，熔融潜热为19.94 J/g。
    关键词：相变材料；微胶囊；脂肪酸；低共熔物
    中图分类号：TU832.1+8        文献标识码:A        文章编号：1001-702X（2017）10-0104-04

Preparation and characterization of microcapsules with capric-myristic acid eutectic mixture as phase change materials
GUO Yong，ZHU Yangqian，WU Qian，HU Cong，WANG Haiping
（Key Laboratory of Optoelectronic Chemical Materials and Devices，Ministry of Education，
School of Chemical and Environmental Engineering，Jianghan University，Wuhan 430056，China）

    Abstract：A kind of microcapsule containing phase change material of capric-myristic acid eutectic was successfully prepared by solvent evaporation approach using thermoplastic resin as polymer wall material. The surface morphology，chemical structure and thermal properties of the microcapsules were investigated. The influence of different kind of polymer wall material on the characteristics of microcapsules was studied. The results showed that microcapsules were synthesized successfully and that polymethylmethacrylate（PMMA） was the best capsule wall material for capric-myristic acid eutectic with excellent heat stability. The melting temperature and melting latent heat were determined to be 29.21 ℃ and 19.94 J/g for microcapsules with PMMA. The core content of the microcapsule was 18.95%.
    Key words：phase change materials，microcapsule，fatty acid，eutectic