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Thermal Properties of Graphene and Its Composites  
Thermal Properties of Graphene and Its Composites
資料類型: PDF文件
關鍵詞: graphene  processing  thermal  properties  
資料大?。?/td> 110K
所屬學科: 分子表征
來源: 第六屆亞歐研討會上處理和性能增強聚合物會議文集(2013.6.2-6 武漢)
簡介:
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
上傳時間: 2013-07-02 14:06:11
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