Composite macrocapsule of phase change materials/expanded graphite for thermal energy storage

被引：68

作者：

Li, Wei ^{[1
]}

Zhang, Rong ^{[2
]}

Jiang, Nan ^{[2
]}

Tang, Xiao-fen ^{[1
]}

Shi, Hai-feng ^{[1
]}

Zhang, Xing-xiang ^{[1
]}

Zhang, Yuankai ^{[1
]}

Dong, Lin ^{[1
]}

Zhang, Ningxin ^{[1
]}

机构：

[1] Tianjin Polytech Univ, Sch Mat Sci & Engn, Tianjin Municipal Key Lab Fiber Modificat & Funct, State Key Lab Hollow Fiber Membrane Mat & Proc, Tianjin 300387, Peoples R China

[2] Hangyu Rescue Equipment Co Ltd, Xiangyang 441002, Peoples R China

来源：

ENERGY | 2013年 / 57卷

基金：

中国国家自然科学基金;

关键词：

Macrocapsule; Microcapsule; Phase change material; Expanded graphite; Thermal energy storage; PERFORMANCE; FABRICATION;

D O I：

10.1016/j.energy.2013.05.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Three kinds of macro-encapsulated phase change materials (MacroPCMs) were fabricated, i.e., MacroPCMs with a single core-shell structure, MacroPCMs containing microencapsulated phase change materials (MicroPCMs), and composite macrocapsules of MicroPCMs/expanded graphite prepared by suspension-like polymerization followed by a piercing-solidifying incuber process. The morphology, microstructure, phase change property, as well as seal tightness were systematically characterized by field emission scanning electron microscope (FESEM), differential scanning calorimetry (DSC), and energy dispersive X-ray spectrometer (EDS). The core-shell structured macrocapsules exhibit a homogeneous thickness shell. The interface combination between MicroPCMs and polymer substrate was studied through the cross section micrograph of MacroPCMs containing MicroPCMs. The morphology and seal tightness of MacroPCMs fabricated with expanded graphite absorbing both PCMs and shell-forming monomers, enhanced significantly compared with that of PCMs alone. In addition, the effects of polymer substrate proportion between styrene-maleic anhydride copolymer and sodium alginate on the microstructure and performance of MacroPCMs were discussed as well. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：607 / 614

页数：8

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