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化工新型材料  2023, Vol. 51 Issue (5): 185-189    DOI: 10.19817/j.cnki.issn1006-3536.2023.05.034
  科学研究 本期目录 | 过刊浏览 | 高级检索 |
不同乳化剂种类对硬脂酸十二烷基酯相变微胶囊的性能影响
汪海平, 李欣膂, 刘芸, 鲁珍, 余凡, 胡思前
江汉大学光电化学材料与器件教育部重点实验室,光电材料与技术学院,武汉430056
Influence of emulsifier types on the performance of dodecyl stearate phase change microcapsules
Wang Haiping, Li Xinlv, Liu Yun, Lu Zhen, Yu Fan, Hu Siqian
Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, School of Optoelectronic Materials and Technology,Jianghan University,Wuhan 430056
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摘要 分别采用十二烷基苯磺酸钠/聚乙烯醇(SDBS/PVA)、吐温20和辛基苯酚聚氧乙烯醚(OP-10)3种不同的乳化剂,通过原位聚合法制备了以硬脂酸十二烷基酯(DS)相变材料为核、三聚氰胺-尿素-甲醛树脂(MUF)为壳的相变微胶囊。采用扫描电子显微镜(SEM)、傅里叶红外光谱仪(FT-IR)、差式扫描量热仪(DSC)和热重分析仪(TG)对微胶囊的表面形貌、化学结构、相变性能和热稳定性进行了表征。结果表明,所得相变微胶囊呈圆球形,表面较为粗糙;与SDBS/PVA复配乳化剂相比,以非离子型乳化剂吐温20和OP-10制备的相变微胶囊粒径较小;当采用吐温20为乳化剂时,所得微胶囊具有良好的储热能力,熔融焓高达139.2J/g,囊芯含量为69.5%;由于DS本身的蒸发温度较高加上进一步的封装,所制备的相变微胶囊表现出良好的热稳定性,其耐热温度可达250℃。
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汪海平
李欣膂
刘芸
鲁珍
余凡
胡思前
关键词:  硬脂酸酯  相变微胶囊  乳化剂  原位聚合  织物    
Abstract: Phase change microcapsules with dodecyl stearate (DS) as the core and melamine-urea-formaldehyde resin (MUF) as the shell were successfully prepared by in situ polymerization respectively in the aqueous solutions of sodium dodecylbenzene sulfonate polyvinyl alcohol ((SDBS/PVA),Tween 20 and octylphenolpolyoxyethyleneether (OP-10).The surface morphology,chemical structure,phase change properties and thermal stability of the microcapsules were characterized by scanning electron microscopy (SEM),Fourier infrared spectroscopy (FT-IR),differential scanning calorimetry (DSC) and thermogravimetric analysis (TG).The results showed that the obtained phase change microcapsules were spherical with a rough surface.Compared with the SDBS/PVA compound emulsifier,the microcapsules fabricated with non-ionic emulsifiers Tween 20 or OP-10 had smaller particle sizes.When Tween 20 was used as the emulsifier,the resulting microcapsules had good heat storage capacity with a high melting enthalpy of 139.2J/g and a core content of 69.5%.Owing to the high evaporation temperature of DS itself and further encapsulation,the prepared phase change microcapsules showed higher thermal stability with a heat resistance temperature of up to 250℃.
Key words:  stearic esters    phase change microcapsules    emulsifier    in situ polymerization    fabric
收稿日期:  2022-02-17      修回日期:  2023-02-18           出版日期:  2023-05-20      发布日期:  2023-05-31     
ZTFLH:  TB34  
基金资助: 江汉大学校级科研项目(2021yb023)
作者简介:  汪海平(1979-),男,副教授,博士,主要研究方向为新能源材料与器件,E-mail:whp926_130@jhun.edu.cn。
引用本文:    
汪海平, 李欣膂, 刘芸, 鲁珍, 余凡, 胡思前. 不同乳化剂种类对硬脂酸十二烷基酯相变微胶囊的性能影响[J]. 化工新型材料, 2023, 51(5): 185-189.
Wang Haiping, Li Xinlv, Liu Yun, Lu Zhen, Yu Fan, Hu Siqian. Influence of emulsifier types on the performance of dodecyl stearate phase change microcapsules. New Chemical Materials, 2023, 51(5): 185-189.
链接本文:  
https://www.hgxx.org/CN/10.19817/j.cnki.issn1006-3536.2023.05.034  或          https://www.hgxx.org/CN/Y2023/V51/I5/185
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