定形复合相变储能材料实验研究  

INVESTIGATION ON SHAPE-STABILIZED THERMAL ENERGY STORAGE PHASE CHANGE COMPOSITE MATERIAL

作　　者：方贵银[1] 李辉[2] 

机构地区：[1]南京大学物理系,江苏南京210093 [2]南京大学材料科学与工程系,江苏南京210093

出　　处：《真空与低温》2003年第3期171-174,共4页Vacuum and Cryogenics

基　　金：江苏省自然科学基金项目(BK2003072);南京大学分析测试基金项目(WL2-4);南京大学人才培养基金项目(0204005)。

摘　　要：提出了研制一种定形的复合相变储能材料,通过实验分析了所研制的储能材料的融点、融解热、热稳定性及微相结构等性能。该储能材料是由2种相变材料组成,通过物理吸附的方法将其复合在固态支撑材料中。在热分析中,用示差扫描量热仪(DSC)来测定储能材料的融点、融解热,用热重分析仪(TG)测定其热稳定性,并用扫描电镜(SEM)观测了材料的微相结构。测试结果表明,该储能材料具有较高的相变潜热和较好的热稳定性,因此可被应用于储能和热能回收系统中。The shapestabilized thermal energy storage phase change composite material is presented. The properties of thermal energy storge material include melting point, the heat of fusion, thermal stability and microstructure are investigated. The shapestabilized thermal energy storage phase change composite material is composed of thermal energy storage material and solid skeleton material by physical adsorption. The Differential Scanning Calorimeter (DSC) was used to determine melting point and heat of fusion of thermal energy storage material. The thermogravimetry(TG) instrument was used to determine the thermal stability of the thermal energy storage material. The microstructure of the thermal energy storage material is viewed by Scanning Electron Microscope (SEM). The results show that the material has higher latent heat and better thermal stability, so it can be used in thermal energy storage and heat recovery system.

关 键 词：定形复合相变储能材料 融点 融解热 热稳定性 微相结构 

分 类 号：TB34[一般工业技术—材料科学与工程] O414.13[理学—理论物理]