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过程工程学报 ›› 2016, Vol. 16 ›› Issue (5): 812-818.DOI: 10.12034/j.issn.1009-606X.216133

• 过程与工艺 • 上一篇    下一篇

用于自内冷溶液除湿的复配石蜡微胶囊的特性

徐箐1,牛晓峰1,张毅2,欧吉应1,严宇峰1,肖懿1   

  1. 1. 南京工业大学城市建设学院
    2. 安徽工业大学材料科学与工程学院
  • 收稿日期:2016-04-07 修回日期:2016-05-19 出版日期:2016-10-20 发布日期:2016-10-14
  • 通讯作者: 牛晓峰 newton@njtech.edu.cn

Characteristics of Microcapsulated Phase Change Material Used in Auto Internally-cooled Liquid Desiccant System

XU Jing 1,NIU Xiao-feng 1,ZHANG Yi 2,OU Ji-ying 1,YAN Yu-feng 3,XIAO Yi 3   

  1. 1. College of urban construction, Nanjing Tech University
    2. School of Materials Science & Engineering,Anhui University of Technology
    3. College of Urban Construction, Nanjing Tech. University
  • Received:2016-04-07 Revised:2016-05-19 Online:2016-10-20 Published:2016-10-14
  • Contact: NIU Xiao-feng newton@njtech.edu.cn

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被引次数

2

摘要： 以三聚氰胺?甲醛树脂为胶囊壁材、固液复配石蜡为胶囊芯材，采用原位聚合法制备了用于自内冷溶液除湿的相变材料微胶囊，研究了单一或不同类型乳化剂复配、乳化剂用量对相变材料微胶囊粒径、微观形貌及热性能的影响. 结果表明，非离子乳化剂NP-10与阴离子乳化剂SDBS复配所制微胶囊相变潜热较低，非离子乳化剂Span80和Tween80按质量比1:1复配、乳化剂占芯材质量的60%、乳化转速为1000 r/min时，所制微胶囊综合性能最佳，表面光滑致密，分散性良好，粒径均一，平均粒径为0.45 ?m，相变潜热为52.48 J/g，囊芯含量为58.44%，相变温度适用于以LiCl溶液为除湿剂的自内冷溶液除湿系统.

关键词: 溶液除湿, 固液复配石蜡, 微胶囊, 乳化剂

Abstract: The microcapsulated phase change materials (MicroPCMs) to be used in auto internally-cooled dehumidification, with melamine?formaldehyde polymer as wall and solid liquid mixture paraffin as core, was prepared by in-situ polymerization method. In the emulsification of the core material, the non-ionic emulsifier (single or mixed) and the mixture of non-ionic emulsifier and anionic emulsifier were used, respectively. The effects of the types and contents of emulsifier on the diameter, morphology and phase change enthalpy of the MicroPCMs were studied. The results showed that, when the core is emulsified by the mixture of non-ionic emulsifier NP-10 and anionic emulsifier SDBS, the prepared MicroPCMs has low phase change enthalpy. Moreover, when the compound non-ionic emulsifier mixture of Span80 and Tween80 in proportion of 1:1, and the content of the emulsifier is 60% of the core material, the performance of the microcapsule with stirring rates of 1000 r/min in the synthesis process is the best. The mixed paraffin microcapsules have smooth and compact surfaces, and have good dispersion. The sizes of the microcapsules are uniform, and the average diameter of the microcapsules is 0.45 ?m, the phase change enthalpy is 52.48 J/g, the corresponding core content achieves 58.44%, the phase change temperature range is applicable to the auto internally-cooled liquid desiccant system with lithium chloride as desiccant.

Key words: liquid desiccant, solid liquid mixture paraffin, microcapsule, emulsifier

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