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现代化工  2020, Vol. 40 Issue (1): 115-119    DOI: 10.16606/j.cnki.issn0253-4320.2020.01.025
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
SiO2包覆CaCl2·2H2O相变纳米复合材料的制备及表征
周龙祥1, 刘咏1, 张利珍2, 吴照洋2, 王保明1, 化全县1, 刘丽1, 汤建伟1
1. 郑州大学化工与能源学院, 国家钙镁磷复合肥技术研究推广中心, 河南 郑州 450001;
2. 中国地质科学院郑州矿产综合利用研究所, 河南 郑州 450001
Preparation and characterization of SiO2 coated CaCl2·2H2O phase change nanocomposites
ZHOU Long-xiang1, LIU Yong1, ZHANG Li-zhen2, WU Zhao-yang2, WANG Bao-ming1, HUA Quan-xian1, LIU Li1, TANG Jian-wei1
1. National Research & Popularization Centre of Calcium Magnesium Phosphate Compound Fertilizer Technology, School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China;
2. Zhengzhou Research Institute for Comprehensive Utilization of Mineral Resources, China Academy of Geological Sciences, Zhengzhou 450001, China
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摘要 结晶水合物盐是一类无机相变储能材料,其存在相分离、过冷等现象,无法获得实际应用。通过溶胶-凝胶法制备SiO2包覆CaCl2·2H2O相变纳米复合材料,并通过XRD、EDS、SEM和TEM对样品进行表征。DSC和STA分析结果表明,样品具有良好的储热性能和热稳定性。样品的相变温度为75.8℃,相变焓为52.89 J/g。热循环实验表明其具有良好的热循环性能。水合盐的相分离、过冷现象得到了有效抑制和减轻,这是由于介孔限域效应的作用结果。
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周龙祥
刘咏
张利珍
吴照洋
王保明
化全县
刘丽
汤建伟
关键词:  溶胶-凝胶法  CaCl2· 2H2O  相变纳米复合材料  热性能  介孔限域效应    
Abstract: Crystalline hydrated salts are a class of inorganic phase change energy storage materials,which cannot be practically applied due to phase separation,overcooling and the like problems.SiO2 coated CaCl2·2H2O phase change nano-composites are prepared by means of sol-gel method.The samples are characterized by XRD,EDS,SEM and TEM.DSC and STA analysis results indicate that the sample has good heat storage performance and thermal stability.The sample can be melted at 75.8℃ with a latent heat of 52.89 J·g-1.Thermal cycling experiments show that it has good thermal cycling properties.The phase separation and overcooling of the hydrated salt are effectively suppressed and mitigated due to the mesoporous confinement effect.
Key words:  sol-gel method    CaCl2· 2H2O    phase change nano-composites    thermal properties    mesoporous confinement effect
收稿日期:  2019-03-11      修回日期:  2019-11-11           出版日期:  2020-01-20
TQ316.64  
  TB34  
基金资助: 地质调查项目(DD20190590);国家自然科学基金(21576246)
通讯作者:  汤建伟(1964-),男,博士,教授,博士生导师,研究方向为磷化工及资源综合利用,通讯联系人,tangjw@126.com。    E-mail:  tangjw@126.com
作者简介:  周龙祥(1992-),男,硕士研究生,研究方向为相变储能微胶囊技术,1662919732@qq.com
引用本文:    
周龙祥, 刘咏, 张利珍, 吴照洋, 王保明, 化全县, 刘丽, 汤建伟. SiO2包覆CaCl2·2H2O相变纳米复合材料的制备及表征[J]. 现代化工, 2020, 40(1): 115-119.
ZHOU Long-xiang, LIU Yong, ZHANG Li-zhen, WU Zhao-yang, WANG Bao-ming, HUA Quan-xian, LIU Li, TANG Jian-wei. Preparation and characterization of SiO2 coated CaCl2·2H2O phase change nanocomposites. Modern Chemical Industry, 2020, 40(1): 115-119.
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https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2020.01.025  或          https://www.xdhg.com.cn/CN/Y2020/V40/I1/115
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