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过程工程学报 ›› 2015, Vol. 15 ›› Issue (5): 860-865.DOI: 10.12034/j.issn.1009-606X.215249

• 材料工程专栏 • 上一篇    下一篇

癸酸-棕榈酸/SiO2复合相变材料的热性能

张浩 刘秀玉 宗志芳 朱庆明 林晓飞   

  1. 安徽工业大学建筑工程学院 安徽工业大学建筑工程学院 安徽工业大学建筑工程学院 安徽工业大学建筑工程学院 安徽工业大学建筑工程学院
  • 收稿日期:2015-06-29 修回日期:2015-07-29 出版日期:2015-10-20 发布日期:2015-10-20
  • 通讯作者: 张浩

Thermal Property of Decanoic Acid-Palmitic Acid/SiO2 Composite Phase Change Material

ZHANG Hao LIU Xiu-yu ZONG Zhi-fang ZHU Qing-ming LIN Xiao-fei   

  1. School of Civil Engineering and Architecture, Anhui University of Technology School of Civil Engineering and Architecture, Anhui University of Technology School of Civil Engineering and Architecture, Anhui University of Technology School of Civil Engineering and Architecture, Anhui University of Technology School of Civil Engineering and Architecture, Anhui University of Technology
  • Received:2015-06-29 Revised:2015-07-29 Online:2015-10-20 Published:2015-10-20
  • Contact: ZHANG Hao

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被引次数

4

摘要： 以SiO2为载体、癸酸-棕榈酸为相变材料，采用溶胶-凝胶法制备癸酸-棕榈酸/SiO2复合相变材料，考察了其储热性能、导热性能、微观形貌和组成结构. 结果表明，当癸酸-棕榈酸掺入量为0.08 mol时，所制材料具有最好的潜热性能，相变温度为20.02~22.08℃，相变焓为44.53~50.51 J/g，适合在建筑领域应用；当癸酸-棕榈酸掺入量为0.06 mol时，材料导热性能最好，导热系数在第一降温阶段为0.211 W/(m×K)，相变平台阶段为0.017 W/(m×K)，第二降温阶段为0.040 W/(m×K)；材料中SiO2与癸酸-棕榈酸仅是物理嵌合，未发生明显的化学作用，癸酸-棕榈酸掺杂过量时明显包裹SiO2，导致复合相变材料潜热性能和导热性能下降.

关键词: 癸酸-棕榈酸, SiO2, 储热性能, 导热性能, 复合相变材料

Abstract: Using SiO2 as carrier and decanoic acid-palmitic acid as phase change material, decanoic acid-palmitic acid/SiO2 composite phase change material was prepared by sol-gel method, its thermal storage and thermal conductivity performances, microstructure and composition structure were characterized. The results show that when the amount of decanoic acid-palmitic acid is 0.08 mol, the preapred material haa the best thermal storage performance, such as phase change temperature is 20.02~22.08℃ and phase transition enthalpy 44.53~50.51 J/g, being suitable for application in the field of architecture. When the amount of decanoic acid-palmitic acid is 0.06 mol, the material has the best thermal conductivity performance, such as its thermal conductivity in the first stage of cooling is 0.211 W/(m×K), 0.017 W/(m×K) in the stage of phase plateau and 0.040 W/(m×K) in the second stage of cooling. SiO2 in the material is physically embedded with decanoic acid-palmitic acid, there is no chemical reaction between them. When the content of decanoic acid-palmitic acid is excessive, by which SiO2 is covered, the thermal storage and thermal conductivity performances are decreased.

Key words: decanoic acid-palmitic acid, SiO2, thermal storage, thermal conductivity, composite phase change material

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