| 硅基复合相变材料热物性及修饰基团作用机理 |
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| 引用本文： | 王琛,冯妍卉,冯黛丽,王戈,张欣欣. 硅基复合相变材料热物性及修饰基团作用机理[J]. 工程热物理学报, 2019, 40(5): 1180-1187 |
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| 作者姓名： | 王琛 冯妍卉 冯黛丽 王戈 张欣欣 |
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| 作者单位： | 北京科技大学能源与环境工程学院,北京100083;北京长峰新联工程管理有限责任公司,北京100039;北京科技大学能源与环境工程学院,北京100083;北京科技大学冶金工业节能减排北京市重点实验室,北京100083;北京科技大学材料科学与工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金;北京市自然科学基金 |
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| 摘 要： | 本文以聚乙二醇为相变材料,介孔分子筛MCM-41为载体,对孔道内表面进行氨基修饰,制备了PEG/MCM-41复合相变材料.利用FT-IR、DSC以及3-Omega对材料进行了结构表征与测量.实验表明,PEG/MCM-41-OH没有发生相变,而PEG/MCM-41-NH2熔点略低于PEG,潜热随着芯材负载量增大而增加;PEG/MCM-41热导率高于基材但低于两者之和.对测量结果及规律进行机理研究,原子位置分布图、相互作用能及原子对径向分布函数表明,羟基比氨基对芯材作用力更强,束缚芯材在孔道内部运动,进而影响材料蓄热能力;振动态密度和重叠能表明,孔道内PEG原子间传热受阻,热导率下降,而MCM-41传热没有受到影响.
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| 关 键 词： | 聚乙二醇 MCM-41 定形相变材料 分子动力学 热特性 |
Thermophysical Properties and Modified Groups Mechanism of Silicon-based Composite Phase Change Materials |
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| WANG Chen,FENG Yau-Hui,FENG Dai-Li,WANG Ge,ZHANG Xin-Xin. Thermophysical Properties and Modified Groups Mechanism of Silicon-based Composite Phase Change Materials[J]. Journal of Engineering Thermophysics, 2019, 40(5): 1180-1187 |
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| Authors: | WANG Chen FENG Yau-Hui FENG Dai-Li WANG Ge ZHANG Xin-Xin |
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| Affiliation: | (School of Energy and Environmental Engineering, University of Science find Technology Beijing, Beijing 100083,China;School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 China;Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry, University of Science and Technology Beijing,Beijing 100083 China;Beijing Changfeng Xinlian Engineering Management Co. Ltd. Beijing 100039,China) |
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| Abstract: | WANG Chen;FENG Yau-Hui;FENG Dai-Li;WANG Ge;ZHANG Xin-Xin(School of Energy and Environmental Engineering, University of Science find Technology Beijing, Beijing 100083,China;School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 China;Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry, University of Science and Technology Beijing,Beijing 100083 China;Beijing Changfeng Xinlian Engineering Management Co. Ltd. Beijing 100039,China) |
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| Keywords: | polyethylene glycol MCM-41 Shape-stabilized phase change material molecular dynamics thermal properties |
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