石墨改性膨胀珍珠岩相变储热复合材料试验及性能  

Study on Experiment and Performance of Graphite Modified Expanded Perlite Phase Change Thermal Storage Composite Materials

作　　者：张玉洁[1] 李嘉仪 王劭琨[1] 安冬 ZHANG Yu-jie;LI Jia-yi;WANG Shao-kun;AN Dong(Shaanxi Polytechnic Institute,Xianyang 712000,Shaanxi,China)

机构地区：[1]陕西工业职业技术学院,陕西咸阳712000

出　　处：《合成材料老化与应用》2022年第2期82-84,共3页Synthetic Materials Aging and Application

基　　金：陕西工业职业技术学院专项研究项目(2020YKZX-016)。

摘　　要：针对传统暖通用的储热材料导热性能差的问题,用石墨粉改性膨胀珍珠岩相变储热复合材料,并对改性后复合材料的性能进行测试。结果表明:石墨粉添加量为1%的复合相变储热材料储热和导热性能良好,热导率为0.392W/(m·K)。以该材料为原材制作的蓄热砖同样发挥出较好的储热作用,热导率可达0.412W/(m·K),养护28d后,力学强度超过15MPa,满足国家相关标准要求,可以用于建筑节能保温材料。For the poor thermal conductivity of thermal storage materials used in traditional HVAC, graphite powder is used to modify the expanded perlite phase change thermal storage composite materials, and the performance of modified composite materials was tested. The results show that when the amount of graphite powder added is 1%, the thermal storage and thermal conductivity of this composite phase change thermal storage material are good, and its thermal conductivity is 0.392W/(m·K). In addition, using the material as the raw material, the thermal storage eff ect of generated thermal storage brick is also good, and its thermal conductivity can reach 0.412W/(m·K). After 28 days of maintenance, the mechanical strength of thermal storage brick exceeds 15MPa, which meets the requirements of relevant national standards and can be used as the building energy saving and thermal insulation material.

关 键 词：石墨 膨胀珍珠岩 相变材料 热导率 储热性能 建筑节能 

分 类 号：TB33[一般工业技术—材料科学与工程]