Preparation and property of nano/micro composite phase change heat storage material for enhancement of thermal conductivity
Wang Junxia1, Wang Jun1,2, Huang Chongxing3, Lu Lixin1,2, Gao De4
1.School of Mechanical Engineering,Jiangnan University,Wuxi 214122; 2.Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology,Wuxi 214122; 3.Light Industry and Food Engineering College,Guangxi University,Nanning 530004; 4.Ningbo Institute of Technology,Zhejiang University,Ningbo 315100
Abstract: The composites of octadecylAlcohol (OA),stearic acid (SA),nanometer zinc oxide(nano ZnO),micron copper and expanded graphite(EG) were prepared at the mass ratio of 63.85∶36.15∶ 1.00∶1.00∶8.00.The morphology,chemical structure,thermal properties and thermal conductivity of the composite phase change material were Characterized by scanning electron microscope(SEM),fourier transform infrared spectroscopy(FT-IR),differential scanning calorimeter (DSC),thermogravimetry analysis (TGA) and thermal conductivity meter.The results shown that phase change temperature and latent heat of composites were 55.38℃and 195.4J/g,respectively,the thermal decomposition temperature was 213.27~359.05℃,the thermal conductivity and heat storing and releasing efficiency were increased.After repeated 300 thermal cycles,the composite still shown good thermal stability.Hereby,the composite phase materials show large potential in thermal storage,especially in insulated container,because of suitable phase change temperature,high latent heat,good thermal stability and low cost.
王俊霞, 王军, 黄崇杏, 卢立新, 高德. 导热增强型纳米/微米复合相变蓄热材料的制备及性能研究[J]. 化工新型材料, 2019, 47(9): 82-85.
Wang Junxia, Wang Jun, Huang Chongxing, Lu Lixin, Gao De. Preparation and property of nano/micro composite phase change heat storage material for enhancement of thermal conductivity. New Chemical Materials, 2019, 47(9): 82-85.
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