聚乙二醇/甲基纤维素定形相变材料的制备及其性能研究  

Preparation and Characterization of Polyethylene Glycol/Methyl Cellulose Form-Stable Phase Change Materials

作　　者：李彦山[1] 汪树军[1] 刘红研[2] 朱思佳[1] 郑万刚[1] 梁文章 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京102249 [2]中国石油大学(北京)理学院,北京102249 [3]广西桂邦生物能源有限公司,广西南宁530023

出　　处：《石油化工》2013年第9期1023-1027,共5页Petrochemical Technology

基　　金：广西千亿元产业重大科技攻关工程项目(桂科攻11107016-5)

摘　　要：以聚乙二醇(PEG)为储能材料、甲基纤维素(MC)为载体,采用溶液浇铸法制备了PEG/MC定形相变材料。利用恒温加热、PLM、ATR-FTIR和DSC等方法研究了该定形相变材料的PEG泄露性、分子结构、结晶形态和热性能。实验结果表明,当PEG含量不超过80.0%(w)、温度高于PEG熔点但不超过80℃时,PEG/MC定形相变材料不会出现PEG泄漏现象;由于氢键作用,MC与PEG具有良好的相容性;加热或冷却时,PEG/MC定形相变材料通过PEG晶体的熔化或结晶可实现能量的存储或释放。Polyethylene glycol（PEG）/methyl cellulose（MC） form-stable phase change materials （PCMs） were prepared by solution-casting method with PEG as the energy storage material and MC as the support.The PEG leaking performance,crystal morphology,molecular structure and thermal properties of PEG/MC were characterized by means of constant temperature heating,polarized light microscopy （PLM）,ATR-FTIR and DSC.The results indicated that the PEG/MC form-stable PCMs with PEG content less than 80.0％ （w） didn＇t leak PEG when the environmental temperature was higher than the melting point of PEG and lower than 80 ℃ ; MC and PEG were well compatible because of hydrogen-bond action; when heating or cooling PEG/MC form-stable PCMs,it could store or release latent heat through the melting or crystallizing of PEG crystals.

关 键 词：聚乙二醇 甲基纤维素 定形相变材料 溶液浇铸法 

分 类 号：TQ317[化学工程—高聚物工业]