新型阴离子交换膜的制备与性能分析

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1、摘要problemsAsabasickeycomponentsofdirectmethanolfuelcell，anion-exchangemembranecanconducthydroxylion，separatefuelandoxidizer．Inthispaper,ourexperimentsconcentrateonthepreparationandcharacterizationofthefilm，andsomeprogressesareobtainedasfollows：Polyvinylbenzylchloride(PVBO)isakindofpreparationforan

2、ewtypeofmembranematerial，whichhasahighglasstransitiontemperature，goodsolubility,film—forming，mechanicalpropertiesandchemicalstability．TheappropriatesolventpolymerdissolvedPVBCImadeofpdymersolution，selectingasuitablecross-linkingagentaddedinthepolymersolutionforcross—linking．Solutionwillbeeastonthe

3、formationofaslide，andthenletthesolventsvolatilizeatroomtemperatureforlongenoughtime(4hours)toensurcthatthesolventscanvolatilizecompletely．Throughsolutioncastingmethod，wecansuccessfullypreparedcompletePVBCIion-exchangemembrane，whichhavethecharactersofdimensionalstability,smoothsurfacequality,andtra

4、nsparentcolor．ThePVBCImembranemechanicalpropertiesandtheexchangeofpropertieswerestudied．Thesolvent，thecarrier,theconcentrationofpolymer,CROSS-·linkingagentandamountoffilm--formingpropertieswereanalyzed．Themoisture‘contentofthefilmandtheionexchangecapacity(IEC)werecharacterized．Groupcontributionmet

5、hodusedtocalculatethesolubilityparametersofthemembranematerialPVBCI．TheturbiditytitrationmeasuredvalueisV北京化工大学硕士学位论文similartoit．Wecangetpolymersolubilityparametersbygroupcontributionmethodandturbiditytitration．ForitEAisgoodsolventformembranematerialPVBCI．．LCPwillbeusedtostudytherelationshipbetwee

6、ntherespectivecastingsolutionsystembetweenPVBCl／NMP／NonsolventandPVBCl／ENNonsolvent．Throughtheexperimentofnon—solventadditions(I-i20，isbutanone，ethyleneglycolandglacialaceticacid，n-butylalcoholandPEG400)incastingsolutionoftheseparatesystem：TheresultesshowthattherelationshipofL凹canbeusedtodescribet

7、hesystemofseparation．AccordingtotheLCPlinearcurve，interceptanon—solventprecipitationisinverselyproportional．Theresultsshowedthattheabilityofprecipitationofpolymernon—solvent(H20，butanone，ethyleneglycolandglaciala