乳液模板法制备相变泡沫材料及其储热性能增强研究  

Fabrication of foamy phase change materials with enhanced thermal performance by emulsion-templating method

作　　者：邓静倩 孔鹏 侯丹丹[1] DENG Jingqian;KONG Peng;HOU Dandan(Sinopec Beijing Research Institute of Chemical Industry,Sinopec Key Laboratory of Research and Application of Medical and Hygienic Materials,Beijing 100013,China;Key Laboratory of Carbon Fiber and Functional Polymers,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]中国石化,北京化工研究院,中石化医用卫生材料研究与应用重点实验室,北京100013 [2]北京化工大学材料科学与工程学院,北京100029

出　　处：《中国塑料》2025年第3期19-24,共6页China Plastics

摘　　要：采用乳液模板法制备了聚苯乙烯/石蜡复合相变泡沫材料(EPSPW),其中石蜡被包封在泡沫材料的孔隙中。结果表明,EPSPW的孔隙率为85%~92%(体积分数,下同),孔径介于3.5~10μm,分布较窄;当石蜡含量为30%(质量分数,下同)时,EPSPW在33倍自身质量的载荷下表现出优异的形状稳定性,且无石蜡泄露;浸出测试显示,在高于石蜡熔点的温度下样品中的质量损失率仅为3%;EPSPW的熔融焓达到32 J/g,远远高于直接发泡的相变泡沫材料的相变焓(大多在15~20 J/g之间);此外,EPSPW在50次加热/冷却循环中表现出良好的循环稳定性。Polystyrene/paraffin phase-change composite foam(EPSPW) was prepared through encapsulating paraffin into the pores of the foam using an emulsion-templating method.SEM observation indicated that the porosity of EPSPW ranged from 85 to 92 vol% and the pore size ranged from 3.5 to 10 μm with a narrow distribution.When the paraffin content was 30 wt%,EPSPW exhibited excellent shape stability without any leakage of paraffin,and its loading of paraffin was 33 times as great as its own mass.The leaching test results indicated that the mass loss rate of the sample was only 3 wt% at temperatures above the melting point of paraffin.EPSPW presented a melting enthalpy of 32 J/g,which was much higher than that of directly foamed phase-change foam materials(mostly around 15~20 J/g).In addition,EPSPW exhibited good cycle stability over 50 heating/cooling cycles.

关 键 词：泡沫相变材料 乳液模板 石蜡 热性能 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]