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Thermal Properties of Graphene and Its Composites  
Thermal Properties of Graphene and Its Composites
资料类型: PDF文件
关键词: graphene  processing  thermal  properties  
资料大小: 110K
所属学科: 分子表征
来源: 第六届亚欧研讨会上处理和性能增强聚合物会议文集(2013.6.2-6 武汉)
简介:
Inthisstudy,thethermalpropertiesandcorrespondingmeasurementmethodsforboth2Dand3Dgraphenes(GFs),aswellasgraphenefilledpolymercompositesarereviewed.Then,aresearchworkonthethermalconductivityofa3Dgrapheneanditscompositesisintroducedbasedonourprimaryresults.Theanalysisontheadvantages,limitationsandavailabilityofthosemethodsisgivenindetail.Thegraphenesheethasthethermalconductivityofashighas5000W/mKandnegativethermalexpansioncoefficientatroomtemperature,while,itscompositeshavemuchlowerthermalconductivity.High-yieldthreedimensionalgraphenenetworkswerepreparedonbothNiandCu3Dporoustemplatebyambientpressurechemicalvapourdeposition.TheNiandCutemplatescoveredwithgrapheneweredrop-coatedwithapoly(methylmethacrylate)(PMMA)solution,andbakedathightemperature.ThenthesampleswereputintoacorrespondingsolutiontocompletelydissolvetheNiandCutemplate.Finally3DgraphenenetworkwasobtainedafterremovingPMMAinacetone.TheGF/PDMScompositeswerepreparedbyinfiltratingGFswithPDMSwithoutthedamagetointerconnected3DscaffoldofGFs.ThemicrostructureswerecharacterizedbySEM,RamanspectroscopyandTEM.ThestrengthofGF/PDMScompositeswasmeasuredwithamechanicaltestingsystembybendingtests.Thethermalconductivityandthermalexpansioncoefficientweremeasured.TheresultsobtainedshowthattheGF/PDMScompositeshavegoodthermalpropertiesandaregoodcandidatematerialsforheatmanagementinmicroelectronicindustries.
作者: Y. H. Zhao, Z. K. Wu, S. L. Bai
上传时间: 2013-07-02 14:06:11
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