石墨烯改性石蜡-硅酸盐矿物基复合相变材料的制备及性能研究  

Preparation and Properties of Paraffin-silicate Mineral-based Composite Phase Change Materials Modified by Graphene

作　　者：吴思颍 索生宝 马泽华 刘仪方 赵博 吴金花 WU Si-ying;SUO Sheng-bao;MA Ze-hua;LIU Yi-fang;ZHAO Bo;WU Jin-hua(School of Civil Engineering,Hebei University of Water Resources and Electric Engineering,Hebei Cangzhou 061000;Hebei Technology Innovation Center of Phase Change Thermal Management of Data Center,Hebei Cangzhou 061000,China)

机构地区：[1]河北水利电力学院土木工程系,河北沧州061000 [2]河北省数据中心相变热管理技术创新中心河北水利电力学院,河北沧州061000

出　　处：《广州化工》2024年第14期42-45,共4页GuangZhou Chemical Industry

基　　金：2021年河北省大学生创新业训练计划项目“水泥基压电复合材料在混凝土中的应用研究”(No:202110085002)。

摘　　要：“双碳目标”对建筑节能提出高要求,相变储热材料具有充分利用太阳能等清洁能源、降低建筑内耗等特点,有望广泛用于绿色建筑储热等领域。以高温和氢氧化钠溶液两种预处理改性硅藻土和凹凸棒土为吸附基材,通过真空吸附法吸附液态石蜡制得石蜡-硅酸盐矿物基复合相变材料,为提升复合相变材料传热效率,以导热性优异的石墨烯为改性组分,研究了不同石墨烯掺入量对复合相变材料的热性能,结果表明经NaOH预处理的凹凸棒土吸附石蜡最大质量比为36∶64,当石墨烯掺入量为石蜡的5%时,复合相变材料的传热性能和热稳定性均有明显改善。Double Carbon Target put forward high request to building energy saving,phase change heat storage material has the characteristics of making full use of clean energy such as solar energy,reducing building internal consumption and so on,it was expected to be widely used in green building heat storage and other fields.Using modified diatomite and attapulgite as adsorption substrates,which were pretreated with high temperature and sodium hydroxide solution,the wax-silicate mineral-based composite phase change materials were prepared by vacuum adsorption of liquid paraffin,in order to improve the heat transfer efficiency of composite phase change materials(PCMS),the thermal properties of pcms with different amounts of graphene were studied,the results show that the maximum mass ratio of adsorbed paraffin to attapulgite is 36∶64,and the heat transfer and thermal stability of the composites are improved obviously when the content of graphene is 5%of paraffin.

关 键 词：石蜡 凹凸棒 硅藻土 复合相变材料 传热性能 

分 类 号：TU502[建筑科学—建筑技术科学]