Preparation of Lauric Acid/Expanded Perlite Composite Phase Material and Its Thermal Performance

被引：0

作者：

Zhao S. ^{[1
]}

Yan H. ^{[1
]}

Wang H. ^{[1
]}

Li Y. ^{[1
]}

Yu R. ^{[1
]}

Yang J. ^{[1
]}

机构：

[1] Department of Chemical and Material Engineering, Logistical Engineering University, Chongqing

来源：

Cailiao Daobao/Materials Review | 2017年 / 31卷 / 05期

关键词：

Expanded perlite; LA/EP-PCMs; Lauric acid; Nano graphite fiber; Thermal conduction network; Thermal conductivity;

D O I：

10.11896/j.issn.1005-023X.2017.010.022

中图分类号：

学科分类号：

摘要：

Lauric acid/expanded perlite phase change materials(LA/EP-PCMs) were prepared by vacuum absorption method with lauric acid as phase change materials, expanded perlite as skeleton. The microstructure, phase change temperature, latent heat as well as thermal stability of LA/EP-PCMs were investigated by FT-IR, SEM, DSC and TGA, respectively. The results showed that lauric acid could be absorbed in the pore of porous expanded perlite well and had good chemical compatibilities with expanded perlite. As the saturated mass fraction of lauric acid of LA/EP-PCMs is 65%, phase change temperature and latent heat of the phase change materials were determined as 41.3℃ and 110.1 J/g. The thermal conductivity was increased from 0.09 W/(m·K) to 0.16 W/(m·K), which was increased by 77.7% when 5% nano graphite fiber (NGF) was added into LA/EP-PCMs as additive. Experiment of melting and frozen showed that the incorporation of NGF improved the thermal release capacity of composite phase change materials, and the thermal conduction mechanism was the formation of thermal conduction network on the outer and inner surfaces of the phase change substrate. © 2017, Materials Review Magazine. All right reserved.

引用

页码：107 / 111and131

共 17 条

[1] Zalha B., Matl'Jn J.M., Cabeza L.F., Et al., Review on thermal energy storage with phase change:Material, heat transfer analysis and applications, Appl Thermal Eng, 23, 3, (2003)
[2] Shi W., Hou J., Temperature control properties of mass concrete with phase change material in different conditions, J Building Mater, 16, 6, (2013)
[3] Zhou S., Rong M., Zuo S., Et al., Temperature control properties of composite phase change materials in mass concrete, J East China Jiaotong University, 30, 4, (2013)
[4] Liu C., Tang G., Application and energy saving effect of thermal insulation motar with phase transition and energy storage, Shanghai Coating, 50, 7, (2012)
[5] Zhang Y., Zhang X., Phase change material effect on heat property of mortar, J Tongji University: Nat Sci Ed, 35, 7, (2007)
[6] Ai M., Cao L., Guo X., Et al., Energy efficiency evaluation of phase change energy storage building materials, Product Mater, 36, 4, (2008)
[7] Deng A., Li S., Shen X., Et al., An experimental study on phase change heat storage ability of temperature control concreted during phase change, J Logistical Engineering University, 23, 4, (2007)
[8] Wang J., Study on the basic throries and preparation of phase change and temperature self-control concrete, (2011)
[9] Yang Y., Zhang X., Sheng L., Study of phase change materials apply on controlling hydration heat of concrete, China Concr Cem Product, 5, (2007)
[10] Liu J., Yu Y., He X., Research on preparation and proprieties of lauric acid/expand perlite phase change materials, Energy Buildings, 110, (2016)

← 1 2 →