一种新型相变蓄热材料的实验研究  

Experimental Study of a New Phase-change Thermal Storage Material

作　　者：林怡辉[1] 张正国[1] 王世平[1] 

机构地区：[1]华南理工大学教育部传热与节能开放研究实验室,广东广州510640

出　　处：《江汉石油学院学报》2001年第4期81-83,共3页Journal of Jianghan Petroleum Institute

基　　金：科技部"973"项目 ;广东省自然科学基金资助项目

摘　　要：将有机相变蓄热材料与导热系数高的无机物进行纳米复合的创新方法 ,克服现有有机蓄能材料存在液体渗漏、传热率低、相变时体积变化、有可燃性、对母体材料有副作用以及无机蓄能材料存在腐蚀性、相变过程中具有过冷和反相等缺点 ,将有机相变材料嵌入到导热系数较高的二氧化硅纳米层空间内 ,制备有机无机纳米复合相变蓄热材料。采用扫描电镜、红外光谱分析仪、差示扫描量热分析仪、导热系数仪分析制备的复合相变材料 ,结果表明 ,复合相变材料是多孔纳米复合材料 ,其蓄热能力较好、导热性能好。A new method, by which nanocomposition is made up of an organic phase-change thermal storage material with an inorganic material of high thermal conduction coefficient, would eliminate the shortcomings of the organic energy storage material available, such as liquid leakage, low heat transfer, volume changes in phase transition, flammability, side effect to the parent material and as well as corrosivity, overcooling and reacting in phase transition of the inorganic thermal storage material. Organic-inorganic nanocompositional phase-change thermal storage materials are prepared by embedding the organic phase-change material into a silicon dioxide nanospace with higher thermal conductive factors. The prepared materials are analyzed with SEM, IR, differential scanning calorimeter and thermal conductivity analyzer. The result shows that the compositional phase-change materials are porous nanocompositional ones, of which thermal storge capacity and thermal conductivity are good.

关 键 词：复合材料 相变 潜热 蓄热 热导率 纳米材料 相变蓄热材料 

分 类 号：TB34[一般工业技术—材料科学与工程]