以棕榈酸-十六醇低共熔物为相变材料,膨胀珍珠岩为基体,采用真空浸渗的方法,制备出棕榈酸-十六醇/膨胀珍珠岩复合相变储热材料。采用ESEM、FTIR、DSC、熔化凝固过程分析对该复合材料进行了结构和性能研究。结果表明:棕榈酸-十六醇被有效地包封在膨胀珍珠岩内,与膨胀珍珠岩基体的化学相容性良好;该复合材料具有较高的相变潜热和较好的热稳定性,并且通过在复合材料中添加10%(质量分数)石墨,改善了材料的导热性能。 Using palmitic acid-cetyl eutectoid as phase change material and expanded perlite as matrix, the composite phase change thermal storage material of palmitic acid-cetyl alcohol / expanded perlite was prepared by vacuum infiltration method. The structure and properties of the composites were studied by ESEM, FTIR, DSC and melt-solidification process. The results show that palmitic acid-hexadecanol is effectively encapsulated in expanded perlite and has good chemical compatibility with the expanded perlite matrix. The composite has high phase transition latent heat and good thermal stability, and By adding 10% (mass fraction) graphite in the composite, the thermal conductivity of the material is improved.