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Preparation and properties of aliphatic ester/ fatty alcohol composite phase change material  
Preparation and properties of aliphatic ester/ fatty alcohol composite phase change material
资料类型: PDF文件
关键词: composite  phase  change  material  thermal  properties  non-isothermal  
crystallization  kinetics  
资料大小: 2238K
所属学科: 分子表征
来源: ICAFPM 2011先进纤维与聚合物材料国际学术会议(2011.8.15~17,上海)
简介:
Thisstudypreparedaliphaticester/fattyalcoholcompositephasechangematerials(CPCMs)withdifferentmassratiosbymixingthemeachother.Differentialscanningcalorimetries(DSC),thermogravimetricanalysis(TGA)wereusedtodeterminethethermalpropertiesandthermalstabilityofCPCMs.ThethermalanalysisresultsindicatedthatthemeltingandfreezinglatentheatsoftheobjectiveCPCMwere197.2and195.2J/gwiththephasechangetemperaturerangesof33.05~52.10℃and36.95~21.35℃,respectively,andthecorrespondingmassfractionofaliphaticesteris50%.ThedecompositiontemperatureofCPCMis215.3~262.8°C.Inaddition,thenon-isothermalcrystallizationkineticsofCPCMwasstudiedbyDSCatdifferentcoolingrates.ItwasfoundthattheJeziornymodifiedAvramiequationwassuccessfullyusedtodescribethenon-isothermalcrystallizationprocess.Thestudyshowedthatasthecoolingrateincreasing,Zcandtmaxincreasedwhilet1/2decreased.ThevaluesofnofAvramiequationwereallabout2~3,whichindicatedthatthemechanismsofnucleationatdifferentcoolingrateweresimilar.
作者: SU Beibei, ZOU Liming, XU Su, XIE Lingjiao
上传时间: 2011-10-17 13:49:45
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