Fabrication and Characterization of Nanoencapsulated Stearic-acid/SiO

Fabrication and Characterization of Nanoencapsulated Stearic-acid/SiO_2 Phase Change Material

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NETL
Trans Tech Publications Ltd

外文摘要：A novel nanoencapsulated shape-stabilized phase change material (PCM) with stearic acid as the core and SiO_2 as the shell was synthesized by a two-step procedure， in which SiO_2 hollow nanospheres were prepared firstly by a template-assisted method and stearic acid was then embedded in SiO_2 hollow nanospheres based on balance principle of fluid in capillary。 The morphology， structure and thermal storage property of the sample were characterized by X-ray powder diffraction， scanning electron microscopy and differential scanning calorimeter。 The results suggest that the as-obtained nanocapsules were regular spheres with diameters around 220 ran， and it is possible to enhance the heat transfer and repress the super-cooling phenomenon by designing the nanoencapsulated PCMs with organic PCMs as cores and inorganic materials as shells。

外文关键词：

phase change materialsynthesischaracterizationnanocomposite

作者：

Benxia Li、Yanfen Wang、Bin Zhu

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作者单位：

Department of Materials Science and Engineering, Anhui University of Science & Technology,Huainan, Anhui 232001, China

会议名称：

International conference on frontier of nanoscience and technology;ICFNST 2011

会议地点：

Kunming(CN);Kunming(CN)

会议母体文献：

Frontier of nanoscience and technology

页码：

p.123-127

出版时间：

2011

DOI：

10.4028/www.scientific.net/MSF.694.123