Preparation and properties of gypsum-based heat storage and preservation material

被引：57
作者：
Li, Min [1 ,2 ]
Wu, Zhishen [2 ]
Chen, Meirong
机构：
[1] Southeast Univ, Coll Mat Sci & Engn, Jiangsu Key Lab Construct Mat, Nanjing 211189, Peoples R China
[2] Southeast Univ, Int Inst Urban Syst Engn, Nanjing 211189, Peoples R China
来源：
ENERGY AND BUILDINGS | 2011年 / 43卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Paraffin; Expanded perlite; Phase change material; Heat storage; Heat preservation; PHASE-CHANGE MATERIALS; THERMAL-ENERGY STORAGE; PARAFFIN; COMPOSITES; BEHAVIOR; DENSITY;
D O I：
10.1016/j.enbuild.2011.05.016
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The paraffin/expanded perlite shape-stabilized phase change material (PCM) was prepared by absorbing paraffin into pores of expanded perlite with vacuum adsorption method (VA method). The gypsum-based heat storage and preservation material was prepared by mixing the prepared paraffin/expanded perlite shape-stabilized PCM and gypsum. Scanning electron microscopy (SEM) was used to investigate the influence of the VA method and free adsorption method (FA method) on the microstructure of the paraffin/expanded perlite PCM. Differential scanning calorimetry (DSC) and exudation experiment were used to test the thermal property and shape-stability of the paraffin/expanded perlite PCM, respectively. The thermal conductivity, bending strength and compressive strength were also tested. The results showed that paraffin was uniformly distributed in pores of expanded perlite in the paraffin/expanded perlite PCM prepared with the VA method. The paraffin/expanded perlite PCM had satisfied shape-stability. The thermal conductivity of gypsum was decreased by addition of the paraffin/expanded perlite PCM. The adsorption amount of paraffin had little effect on the bending strength and compressive strength of the gypsum-based heat storage and preservation material. (C) 2011 Elsevier B.V. All rights reserved.
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收藏
页码：2314 / 2319
页数：6
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