癸酸-月桂酸/膨胀石墨相变储能材料的制备及性能研究  

Study on preparation and properties of capric acid-lauric acid/expanded graphite phase change materials

作　　者：马烽[1] 王晓燕[1] 程立媛[1] 

机构地区：[1]山东轻工业学院化学工程学院,山东济南250353

出　　处：《功能材料》2010年第A01期180-183,共4页Journal of Functional Materials

基　　金：山东省科技计划资助项目(2006GG2203027);山东省中青年科学家科研奖励基金资助项目(2008BS04033)

摘　　要：以癸酸-月桂酸低共熔物为相变材料,多孔石墨为基体,利用多孔石墨的吸附特性,制备出癸酸-月桂酸/膨胀石墨定形相变储能材料。采用DSC、ESEM、融化凝固过程分析对定形相变储能材料进行了结构和热性能研究。结果表明,癸酸-月桂酸被有效地包封在多孔石墨孔内,并且在定形相变材料中占80.47%(质量比);定形相变材料的相变温度为19.50℃,相变焓为93.18J/g;与癸酸-月桂酸相比,定形相变材料的导热性能有一定程度的提高。Capric acid-lauric acid/expanded graphite shape-stabilized phase change materials（CA-LA/EG） were prepared by using the eutectic mixture of capric acid（CA） and lauric acid（LA） as phase change material,porous expanded graphite（EG） of high adsorption characteristics as supporting matrix.The structure and properties of the materials were studied by ESEM,DSC and the test of melting and solidification process.The results show that the capric acid-lauric acid is well sealed into the inner pore of porous graphite,the mass fraction of the eutectic mixture in CA-LA/EG is found to be 80.47%,phase change temperature and latent heat of CA-LA/EG is 19.50℃ and 93.18J/g respectively,and the thermal conductivity of the shape-stabilized phase change materials is enhanced to a certain extent as compared with that of capric acid-lauric acid.

关 键 词：癸酸 月桂酸 膨胀石墨 相变 

分 类 号：TB34[一般工业技术—材料科学与工程]