材料科学
热塑性塑料
热塑性聚氨酯
聚氨酯
复合材料
相变
相(物质)
储能
工程物理
有机化学
工程类
热力学
弹性体
物理
功率(物理)
化学
作者
Liang Peng,Peng Xi,Bowen Cheng,Xiaoqing Wang,Yaqing Zhang,Jiafeng Wu
出处
期刊:Science of Advanced Materials
[American Scientific Publishers]
日期:2015-11-01
卷期号:7 (11): 2420-2426
被引量:7
标识
DOI:10.1166/sam.2015.2421
摘要
This study focuses on the design and synthesis of a novel tetrahydroxy compound, namely terephthalic acid bis-(2-hydroxy-1-hydroxymethyl-ethyl) ester (TABE), to prepare polyurethane-based phase-change materials with a higher phase-change enthalpy and suitable phase-change temperature. Based on the unique molecular structure of TABE, a series of thermoplastic polyurethane-based solid-solid phase-change materials for energy storage were synthesized via a three-step condensation reaction of polyethylene glycols with TABE, 4,4'-diphenylmethane diisocyanate (MDI), and polyethylene glycol monomethylether (MPEG). The composition and properties of the as-synthesized samples were characterized using several experimental techniques. The results showed that the polyurethane-based solid-solid phase-change materials presented in this work have a higher phase-change enthalpy; the maximum phase-change enthalpy values associated with the heating and cooling cycles were 153.51 J/g and 143.91 J/g, respectively. In addition, they showed excellent thermal reliability and stability, i.e., the initial decomposition temperature and the maximum decomposition temperature were measured to be 320.16 degrees C and 451.12 degrees C, respectively. Most importantly, the best phase-change temperatures of the phase-change materials ranged between 22.41 and 48.41 degrees C, and the phase-change materials can be directly melted and processed. Owing to these properties, these materials can be applied in textile products, telecommunication and microprocessor equipment, and constructions.
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