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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2017,Vol.33>> Issue(1)>> 255-261     doi: 10.3866/PKU.WHXB201610181         中文摘要
Synthesis and Properties of Polyurethane/Coal-Derived Carbon Foam Phase Change Composites for Thermal Energy Storage
WU Wen-Hao1, HUANG Xin-Yu1, YAO Rui-Min1, CHEN Ren-Jie1, LI Kai2, ZOU Ru-Qiang1
1 Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, P. R. China;
2 Research Institute of Chemical Defence, Beijing 100191, P. R. China
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In this article, we used coal-derived carbon foam (CCF) as a skeleton material to encapsulate the solid-to-solid phase change material polyurethane (PU) to provide PU@CCF composites for functional applications. The obtained PU@CCF composites were characterized by field-emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD), Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and thermal conductivity measurements. The results illustrated that the most preferred ratio of polyethylene glycol (PEG-6000) to hexamethylene diisocyanate (HDI) to synthesize PU was 1:2 and the CCF skeleton prevented PU leakage during the phase change process. Compared with PEG-6000, the thermal conductivity of the PU@CCF composite was raised by 54%, its cycle thermal stability was remarkable after 2000 cycles, and its supercooling degree was lowered by more than 10℃. For electro-to-heat energy conversion, the phase transition behavior of the obtained PU@CCF could be induced under an electron voltage as low as 0.8 V with 75% conversion efficiency at 1.1 V. This functional phase change composite realizes electric-heat conversion under the lowest loading voltage reported to date, providing an important benchmark for the preparation and functionalization of low-cost phase change composites.



Keywords: Phase change material   Thermal energy storage   Thermal conductivity   Carbon foam   Electro-to-heat energy conversion  
Received: 2016-07-27 Accepted: 2016-10-18 Publication Date (Web): 2016-10-18
Corresponding Authors: ZOU Ru-Qiang Email: rzou@pku.edu.cn

Fund: The project was supported by the National Natural Science Foundation of China (51322205, 21371014) and Specialized Research Fund of Beijing Municipal Science & Technology Commission, China (Z15111000090000, Z151100000915074).

Cite this article: WU Wen-Hao, HUANG Xin-Yu, YAO Rui-Min, CHEN Ren-Jie, LI Kai, ZOU Ru-Qiang. Synthesis and Properties of Polyurethane/Coal-Derived Carbon Foam Phase Change Composites for Thermal Energy Storage[J]. Acta Phys. -Chim. Sin., 2017,33 (1): 255-261.    doi: 10.3866/PKU.WHXB201610181

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