Study on a reliable epoxy-based phase change material:facile preparation,tunable properties,and phase/microphase separation behavior

【作者】 廉青松； 李凯； Asim A.S.Sayyed； 程珏； 张军营；

【Author】 Qingsong Lian;Kai Li;Asim A.S.Sayyed;Jue Cheng;Junying Zhang;The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials,Beijing University of Chemical Technology;

【机构】 北京化工大学；

【摘要】 Room temperature used phase change materials（PCMs） are of vital importance in combining the sustainable development of energy and human comforts.Here,a series of novel epoxy-based polymeric solid-solid PCMs（SSPCMs） were facilely prepared by UV grafting1-Octadecanethiol（ODT） onto an allyl-based epoxy resin（DADGEBA） via thiol-ene click chemistry followed by epoxy-amine thermal curing process.And thus the grafted ODT can be tightly locked in the reliable three-dimensional crosslinking network of the epoxy resin,which provides the PCMs with excellent shape-stable property.Phase change properties and mechanical properties characterized by DSC,DMA,hardness test,and tensile test can be easily tuned by adjusting the mass ratio of DGEBA and the ODT-grafted-DADGEBA product（D18）,which was characterized by FTIR and NMR.XRD and POM analysis proved the crystallinity of the EP_D18.XPCMs.The structure and morphology of the EP_D18.X PCMs were characterized by visual images,SEM,and POM analysis.Due to the unique strong encapsulated epoxy curing networks,the EP_D18.X PCMs have excellent thermal stability with the onset degradation temperature higher than250 ℃.The tunable EP_D18.X systems can be applied for room temperature used energy storage applications such as buildings,thermoregulated fabrics,and so on.更多还原

【Abstract】 Room temperature used phase change materials（PCMs） are of vital importance in combining the sustainable development of energy and human comforts.Here,a series of novel epoxy-based polymeric solid-solid PCMs（SSPCMs） were facilely prepared by UV grafting1-Octadecanethiol（ODT） onto an allyl-based epoxy resin（DADGEBA） via thiol-ene click chemistry followed by epoxy-amine thermal curing process.And thus the grafted ODT can be tightly locked in the reliable three-dimensional crosslinking network of the epoxy resin,which provides the PCMs with excellent shape-stable property.Phase change properties and mechanical properties characterized by DSC,DMA,hardness test,and tensile test can be easily tuned by adjusting the mass ratio of DGEBA and the ODT-grafted-DADGEBA product（D18）,which was characterized by FTIR and NMR.XRD and POM analysis proved the crystallinity of the EP_D18.XPCMs.The structure and morphology of the EP_D18.X PCMs were characterized by visual images,SEM,and POM analysis.Due to the unique strong encapsulated epoxy curing networks,the EP_D18.X PCMs have excellent thermal stability with the onset degradation temperature higher than250 ℃.The tunable EP_D18.X systems can be applied for room temperature used energy storage applications such as buildings,thermoregulated fabrics,and so on.更多还原