应用于太阳能热发电站的高岭土基相变储热材料的制备

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英文篇名：Preparation of kaolin based phase change thermal storage materials for solar thermal power plant 作者：陈祉如 ; 姚兴茂 ; 尹翔鹏 英文作者：Chen Zhiru;Yao Xingmao;Yin Xiangpeng;State Grid Shandong Electric Power Research Institute;Research Institute of Tunkia Co.,Ltd.; 关键词：高岭土 ; 硬脂酸钠 ; 相变储热材料 ; 化学结构 ; 性能 英文关键词：kaolin;;sodium stearate;;phase change material for heat storage;;chemical structure;;performance 中文刊名：NCNY 英文刊名：Renewable Energy Resources 机构：国网山东省电力公司电力科学研究院;天恒测控技术研究院; 出版日期：2019-03-18 出版单位：可再生能源 年：2019 期：v.37;No.247 基金：国家电网公司科技项目(520626180046) 语种：中文; 页：NCNY201903006 页数：5 CN：03 ISSN：21-1469/TK 分类号：37-41

摘要

由于高岭土具有优异的吸附性和包覆性,文章以高岭土为载体,硬脂酸钠为相变材料,制备出一种新型的高岭土/硬脂酸钠相变储热材料,并利用XRD,SEM,FTIR和DSC现代测试技术对该相变储热材料的结构和各项性能进行研究。分析结果表明:高岭土和硬脂酸钠之间存在吸附关系,二者未发生化学反应;高岭土基相变储热材料的熔融、冷凝温度分别为252.86,256.91℃,熔融、冷凝相变潜热值分别为109.25,109.01 J/g;经500次热循环后,高岭土基相变储热材料的储热性能没有明显降低,高岭土与硬脂酸钠之间的结合方式也没有发生变化。
        Because of the excellent adsorption and coating properties of kaolin, a new type of kaolin/sodium stearate phase change heat storage material was prepared by using kaolin as carrier and sodium stearate as phase change material. The structure and properties of the phase change heat storage material were studied by modern testing techniques, such as XRD, SEM, FTIR and DSC.The results showed that there was a simple chimeric relationship between kaolin and sodium stearate, and no chemical reaction took place between them. The melting and condensation temperatures of kaolin-based phase change heat storage materials were 252.86 ℃ and 256.91 ℃,respectively. The latent heat values of melting and condensation phase change were 109.25 J/g and109.01 J/g, respectively. After 500 thermal cycles, the thermal storage performance of kaolin-based phase change heat storage materials did not decrease significantly, and the binding mode between kaolin and sodium stearate did not change.

引文

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