Preparation, characterization and thermal properties of micro-encapsulated phase change materials

被引：197
作者：
Pan, Lin [1 ]
Tao, Quanhong [1 ]
Zhang, Shudong [1 ]
Wang, Shuangshuang [1 ]
Zhang, Jian [1 ]
Wang, Suhua [1 ]
Wang, Zhenyang [1 ]
Zhang, Zhongping [1 ]
机构：
[1] Chinese Acad Sci, Inst Intelligent Machines, Hefei 230031, Anhui, Peoples R China
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2012年 / 98卷
基金：
中国国家自然科学基金;
关键词：
PCM; Microencapsulation; Interfacial polycondensation; Heat storage; INTERFACIAL POLYMERIZATION; GLASS-TRANSITION; CONFINEMENT; NANOCOMPOSITES;
D O I：
10.1016/j.solmat.2011.09.020
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this study, a novel microencapsulated phase change material (palmitic acid@AlOOH) was prepared using an in situ emulsion interfacial poly-condensation method. The resulting colloidal-sphere microcapsules, with diameter around 200 nm, are of core-shell microstructures. Characteristic peaks of both palmitic acid and AlOOH can be observed during their IR spectrum characterization. According to the TGA examinations, the encapsulated ratios of palmitic acid (PA) to PA@AlOOH are 52%, 57% and 69%. The DSC results indicate that melting temperatures of the microencapsulated PCMs are remarkably 50 degrees C lower than those of pristine PA, which might originate from the strong interface interactions between the core and shell of PA@AlOOH. The thermal storage capabilities of the microcapsules are also tested. The method and mechanism of this study can be extended to design other organics@inorganics PCMs with different core-shell structured compositions. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：66 / 70
页数：5
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