硫酸铝盐是一种水合盐相变材料,包括十二水硫酸铝钾和十二水硫酸铝铵,其属于同元溶解,具有适宜的相变温度和较高的储能密度且无相分离现象,是储热领域的首选材料之一,应用前景广阔。但硫酸铝盐过冷度较高,因而实际应用受到限制。综述了抑制硫酸铝盐复合材料过冷度的方法,如添加成核剂和增稠剂、多孔基体吸附法、微胶囊化法、低共熔法等,总结了各种方法的优缺点,针对存在的问题提出了解决策略。
Aluminum sulfate salt is a type of hydrated salt phase change material,including potassium aluminum sulfate dodecahydrate and ammonium aluminum sulfate dodecahydrate.It belongs to isomorphous dissolution,featuring a suitable phase transition temperature,high energy storage density,and no phase separation phenomenon,and it is one of the preferred materials in the field of thermal storage,with broad application prospects.However,aluminum sulfate salt has a high degree of supercooling,which limits its practical application.This article summarized the methods for inhibiting the supercooling degree of aluminum sulfate salt composite materials,such as adding nucleating agents and thickeners,porous matrix adsorption method,microencapsulation method,low melting point method,etc.The advantages and disadvantages of various methods were summarized,and the solutions were proposed to address existing problems.
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基金资助
国家自然科学基金(62365015);内蒙古自然科学基金(2023MS05047);内蒙古自治区直属高校基本科研业务费项目(2023RCTD011)
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