石蜡/SiO_2/CuS纳米复合相变材料的制备用于太阳能的光热转换与存储  

Preparation of paraffin/SiO_2/CuS phase change nanocomposite for solar photo-thermal conversion and storage

作　　者：刘佳佳[1] 张凇铭[1] 何秀芹[1] 郝勇敢 邵先坤 刘同宣[1] 李本侠[1] 

机构地区：[1]安徽理工大学材料科学与工程学院,淮南232001

出　　处：《化工新型材料》2015年第12期104-106,共3页New Chemical Materials

基　　金：2014年安徽省大学生创新创业训练计划项目(AH201410361051);安徽理工大学全日制本科生科研资助项目

摘　　要：以石蜡作为相变材料,结合二氧化硅良好的热稳定性、化学稳定性和硫化铜优异的光热转换特性等优点,设计制备出新型"石蜡/SiO_2/CuS"纳米复合相变材料,利用X射线衍射仪、扫描电子显微镜、热重分析仪和差示扫描量热法等分析测试手段对该复合材料的结构和相变储热性能进行表征,并在光照下测试了该复合相变材料的光热转换和热存储效果。结果表明,由于硫化铜的加入,复合相变材料的光热转换性能得到明显提升,这为将来太阳能的光热转换和存储利用提供了新思路。A novel paraffin/SiO2/CuS composite phase change material（PCM）was synthesized via a facile method.Paraffin as a phase change substance was embedded in the porous space of SiO2,and CuS nanoparticles was dispersed in the nanocomposite to act as photo-thermal conversion material.The structure and thermal properties of the as-obtained PCM were characterized by X-ray power diffraction,scanning electron microscopy,thermogravimetric analysis and differential scanning calorimeter.The solar photo-thermal conversion and storage performance of PCM were measured under simulated solar irradiation.The results indicated that the solar photo-thermal conversion and storage property was promoted greatly by adding CuS nanoparticles.A new method to utilize sunlight for photo-thermal conversion and storage in the future was provided.

关 键 词：石蜡 二氧化硅 硫化铜 相变储热 光热转换 

分 类 号：TB332[一般工业技术—材料科学与工程]