气相二氧化硅/三元无机水合盐定型相变材料的制备及性能表征  

Preparation and performance characterization of gas phase silica/ternary inorganic hydrate salt shape-stabilized phase change materials

作　　者：肖力光[1] 朱晨阳 Xiao Liguang;Zhu Chenyang(School of Materials Science and Engineering,Jilin Jianzhu University,Changchun 130118)

机构地区：[1]吉林建筑大学材料科学与工程学院,长春130118

出　　处：《化工新型材料》2024年第5期245-248,254,共5页New Chemical Materials

基　　金：“十三五”国家重点研发计划(2018YFD1101001)。

摘　　要：以气相二氧化硅作为多孔吸附材料,对十二水磷酸氢二钠/五水偏硅酸钠/十水碳酸钠低共熔相变材料进行封装,通过控制气相二氧化硅含量,制备出不同吸附量的气相二氧化硅/三元无机水合盐定型相变材料。通过差示扫描量热仪、扫描电子显微镜、傅里叶变换红外光谱仪、X射线衍射仪和热重分析仪等多种测试手段,对定型相变材料的性能和结构进行表征。研究结果表明:气相二氧化硅的最佳含量为25%(质量分数),该条件下定型相变材料相变焓为95.96J/g;三元无机水合盐相变材料与气相二氧化硅只是单纯的物理混合,并未发生化学反应产生新物质,制备的定型相变热稳定性较好。Gas phase silica was used as a porous adsorption material to encapsulate sodium hydrogen phosphate dodecahydrate/sodium metasilicate pentahydrate/sodium carbonate decahydrate low eutectic phase change materials.By controlling the content of gas phase silica,the gas phase silica/ternary inorganic hydrate salt shape-stabilized phase change materials with different adsorption capacities were prepared.Through a variety of testing methods such as DSC,SEM,FT-IR,XRD and TGA,the performance and structure of the phase change materials were characterized.The research results showed that the optimal content of gas phase silica was 25%(mass fraction),and under this condition,the phase transition enthalpy was 95.96J/g.The ternary inorganic hydrated salt phase change material and gas silica were simply physically mixed,and did not react to produce new substances.The prepared shape-stabilized phase change materials had good thermal stability.

关 键 词：相变蓄能 气相二氧化硅 定型相变材料 低碳节能 

分 类 号：TB34[一般工业技术—材料科学与工程]