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Highly Filled Graphite/Polybenzoxazine Composites for Bipolar Plate Application

資料類型：

PDF文件

關(guān)鍵詞：

polybenzoxazine graphite highly filled system bipolar plate

資料大小：

111K

所屬學(xué)科：

分子表征

來源：

第六屆亞歐研討會(huì)上處理和性能增強(qiáng)聚合物會(huì)議文集（2013.6.2-6 武漢）

簡(jiǎn)介：

Developmentofasuitableandefficientbipolarplatematerialforpolymerelectrolytemembranefuelcell(PEMFC)isscientificallyandtechnicallyimportantduetothecriticaldemandonhigherthermalproperties,higherelectricalconductivityandbettermechanicalpropertiesofthismaterial.Thisresearchaimstostudyelectricalconductivity,mechanicalpropertiesaswellasotheressentialpropertiesofhighlyfilledgraphitecompositesutilizingpolybenzoxazineasamatrix.Thecompositionofgraphitefillerwasachievedtobeintherangeof40%t080%byweight.Theexperimentalresultsrevealedthatatthemaximumgraphitecontentof80wt%or68vol%filledinthepolybenzoxazine,storagemodulusatroomtemperatureofthespecimenwasraisedfrom5.9GPaoftheneatpolybenzoxazineuptoabout21.9GPainthecompositesorabout370%improvement.Theglass-transitiontemperaturesofthecompositeswereobservedtoberangingfrom174t01940Candthevaluessubstantiallyincreasedwithincreasingthegraphitecontentsimplyingsubstantialinterfacialinteractionbetweenthefillerandthematrix.Thermalconductivityashighas10.2W/(m.K)isachievedforagraphite-filledpolybenzoxazineatitsmaximumfillerloading.Waterabsorptionofthisfilledsystemwasrelativelylowwiththevalueofabout0.032%in24hours.Additionally,electricalconductivitywasmeasuredtobeashighas245S/cm.TheobtainedpropertiesofthegraphitefilledpolybenzoxazinecompositesindicatedthevaluesthathighlysatisfiedtheUnitedStatesDepartmentofEnergy(DOE)requirements.Therefore,thesegraphitefilledcompositesbasedonpolybenzoxazinearehighlyattractiveforbipolarplatesinPEMFCapplications.

作者：

S. Rimdusit, A. Pengdam, M. Okawalai, I. Dueramae

上傳時(shí)間：

2013-06-21 16:50:32

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