CNT@MOFs基复合相变材料的制备及性能

Preparation and Performance of Composite Phase Change Material Using CNT@MOFs as the Supporting Material

构建了"实验设计-材料制备-结构表征-性能测试-结果分析"的实践教学模式。通过溶剂热法制备出以碳纳米管(Carbon Nanotubes,CNT)为核,金属有机骨架(Metal-organic Frameworks,MOFs)颗粒为壳的CNT@MOFs多孔材料;再以CNT@MOFs多孔材料为载体,采用溶液浸渍法负载相变芯材十八酸,制备出CNT@MOFs基复合相变材料。通过扫描电镜、透射电镜、红外光谱仪、X射线衍射仪、热重分析仪、差示扫描量热仪、导热系数仪对其进行结构表征及性能测试。采取从材料制备到结构表征及性能测试的设计思路,可操作性强,有利于提高学生综合运用知识的能力和严谨规范的科研能力。

The practical teaching pattern of"experimental design-sample preparation-structure characterizationperformance test-result analysis"was constructed based on putting the scientific research results into the practical teaching,it could activate the research and work atmosphere of the undergraduates in the field of phase change energy storage.In this work,a novel supporting material of CNT@MOFs was developed by the heterogeneous decorations of CrMIL-101-NH2 metal-organic frameworks(MOFs)nanoparticles on the surfaces of carbon nanotube(CNT).Stearic acid(SA)was used as the phase change materials to stabilize the CNT@MOFs supporting material by a physical blending and impregnating method.The obtained SA/CNT@MOFs composite phase change material was characterized by SEM,TEM,FTIR,XRD,TGA,DSC and a hot disk thermal constant analyzer.From the preparation of samples to the determination of structure and performance characterization,this experiment was highly operable,it was conducive to enhance the ability of applying knowledge comprehensively and rigorous and standardized research.