石蜡/TiO2/活性炭复合相变材料的制备及其性能  

Preparation and Properties of Paraffin/TiO_2/Activecarbon Composite Phase Change Materials

作　　者：郝勇敢 邵先坤 唐海娣[1] 汪涛[1] 刘佳佳[1] 李本侠[1] HAO Yong-gan;SHAO Xian-kun;TANG Hai-di;WANG Tao;LIU Jia-jia;LI Ben-xia(School of Materials Science and Engineering, Anhui University of Science & Technology, Huainan 232001, Anhui, China)

机构地区：[1]安徽理工大学材料科学与工程学院,安徽淮南232001

出　　处：《材料工程》2016年第11期51-55,共5页Journal of Materials Engineering

基　　金：国家自然科学基金资助项目(21001003);中国博士后科学基金面上项目(2014M551789)

摘　　要：以石蜡作为相变物质、二氧化钛(TiO_2)作为基体材料,添加少量活性炭提高其热导率,通过微乳液法制备出新型石蜡/TiO_2/活性炭复合相变材料。利用XRD,SEM,TGA,DSC对材料的组成、形貌和性质分别进行表征,并对材料相变过程中的形状稳定性进行测试。结果表明:石蜡被TiO_2有效封装,保证了材料的定形相变特征;此外该复合材料还表现出超疏水性质。这些多功能特性将使其作为多功能涂料或其他添加剂在节能建筑中具有重要的应用价值。A novel composite phase change materials(PCMs)of paraffin/Ti02/active-carbon was preparedby a microemulsion method,where paraffin acted as a PCM and titanium dioxide(T i02)as matrixmaterial,and a small amount of active carbon was added to improve the thermal conductivity.Thecompositions,morphology and thermal properties of the paraffin/Ti02/active-carbon composite PCMswere characterized by XRD,SEM,TGA and DSC respectively.The shape stability during phasechange process of this composite was also tested.The results show that paraffin is well encapsulatedby T i02matrix,and thus exhibiting excellent shape-stabilized phase change feature.Besides,thiscomposite PCM also presents superhydrophobic property.Therefore,these multifunctional featureswill endow PCMs with important application potential in energy efficient buildings.

关 键 词：石蜡 二氧化钛 活性炭 相变材料 微乳液法 

分 类 号：TB333[一般工业技术—材料科学与工程]