中国塑料2018，Vol.32Issue(4)：51-57,7.DOI:10.19491/j.issn.1001-9278.2018.04.009
PEG/EG复合相变储能材料蓄冷性能的实验研究
Experimental Study on Cool Storage Performance of PEG/EG Composite Phase Change Materials
摘要
Abstract
Composite phase change materials (PCMs) were prepared by melt mixing poly(ethylene glycol) (PEG,molecular weight＜1 000) with expanded graphite (EG) as a thermally conductive enhancer,and various effects on the cool storage performance of the PEG/EG composite PCMs were analyzed.The influences of EG content and pressing level on the thermal conductivity of PCMs were investigated by a flash thermal analysis method,their microstructures were determined by scanning electron microscopy,and their cool storage performance was characterized by an engineering survey method to obtain phase transition curves.The results indicated that the effects of EG content and pressing level on the thermal conductivity of PCMs were caused by changing the internal structure of thermally conductive network in the PEG matrix.The cool storage performance was improved with the increase of EG content,and EG also could weaken the influences of coolant content and coolant temperature on the cool storage process.关键词
聚乙二醇/膨胀石墨/相变储能材料/热导率Key words
poly(ethylene glycol)/expanded graphite/phase change material/thermal conductivity分类
化学化工引用本文复制引用
王思宇,郭彦峰,余亮汉,张伟,李治纲..PEG/EG复合相变储能材料蓄冷性能的实验研究[J].中国塑料,2018,32(4):51-57,7.基金项目
国家质量监督检验检疫总局科技计划项目(2014QK131)、陕西省教育厅重点实验室项目(15JS074) （2014QK131）
