Facile synthesis of PEG based shape-stabilized phase change materials and their photo-thermal energy conversion
Facile synthesis of PEG based shape-stabilized phase change materials and their photo-thermal energy conversion
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基于PEG的形状稳定相变材料的简便合成及其光热能转换
DOI：
10.1016/j.applthermaleng.2015.08.063
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发表时间：
2015-12
影响因子：
6.4
通讯作者：
Xianbao Wang
中科院分区：
文献类型：
--
作者：
Weilai Xiong;Yi Chen;Ming Hao;Liu Zhang;Tao Mei;Jianying Wang;Jinhua Li;Xianbao Wang
采用一种简便有效的物理共混方法，在微波辅助下合成了聚乙二醇基稳形相变材料。将氧化石墨烯(GO)作为载体材料添加到聚乙二醇基复合材料中，以改善相变过程中相变过程中相变材料的热性能并保持其稳定的形状。在微波的辅助下，扩大了GO片材的层间距，整个共混过程节省了时间。少量的GO(约4wt%)可以使复合材料在相变过程中有效地吸收能量而不会泄漏，这是因为GO层与聚乙二醇分子链之间存在氢键和毛细管力。差示扫描量热分析结果表明，该复合材料的储热容量为174.5 J/g，是纯聚乙二醇相变热的95.6%。对复合材料的光热转换进行了探索。
Polyethylene glycol (PEG) based shape-stabilized phase change materials (PCMs) were successfully synthesized by a facile and effective physical blending method with the assistance of microwave. Graphene oxide (GO), as a supporting material, was added in PEG matrix to improve the thermal properties of PCMs and keep their stabilized shape during the phase change process. With the assistance of microwave, the interlayer spacing of GO sheets was expanded and the entire blending process was time saving. A small content (about 4 wt%) of GO could make the composite absorb energy efficiently without leakage during their phase change because of the hydrogen bonding and capillary force between the GO layers and PEG molecular chain. The DSC results showed that the composites had a heat storage capacity of 174.5 J/g, which was 95.6% of the phase change enthalpy of pure PEG. The photo-thermal energy conversion of the composites was explored.
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影响因子：
6.4
作者：
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