磺化聚芳醚質(zhì)子交換膜材料的合成及改性研究.pdf

1、大連理工大學(xué)碩士學(xué)位論文磺化聚芳醚質(zhì)子交換膜材料的合成及改性研究姓名：張耀霞申請學(xué)位級別：碩士專業(yè)：化學(xué)工程科學(xué)與技術(shù)指導(dǎo)教師：朱秀玲20070601磺化聚芳醚質(zhì)子交換膜材輯的合成及改性研究SynthesisandPropertiesofSulfonatedPoly(phthalazinoneether)sandtheircompositemembranesforPEMFCAbsCraotTwokindsofsulfonatedpoly

2、(phthalazinone劬er)swithdifferentdegreesofsulfonation①s)眥synthesizedvianacleophiliepolycondensationinthisthesis1牛bi(3sodiumsulfonate4fluorobenzoyl)benzene(SDFKK)ispreparedbysulfonutionofl^bi(4nuorobenzoyl)benzene(DWK)with

3、fumingsulfuricacidcontaining50％S03Novelsulfonatedpoly(phthalazinoneetherketoneketone)s(sPPEKKs)arcsynthesizedwithdifferentDSviadirectpolycondensafionfromSDFKKDFKKand4(4hydroxyphenyl)l(2H)phthalazinone(DHPZ)Theinherentvis

4、cosityofco州ym螂isintherallgeofO43dL／gto180dL／gSulfonatedpoly(phthalazinoneethernitrilck西toneketone)scopolymers(SPPENKKs)aresynthesizedinhighmolecularweightviadirectpolyondensationfromSDFKKDFKK2，6dicholobenzonilrile(DCBN)a

5、ndDIIPZ11他inherentVISCO$ityofcopol嬲isintherangeof062dL／gt01。57d魄’rrm1HNMRandwideXrayscatteringa塢usedtocharacterizcthestructuresofSPPEKKsandSPPENKKsTGAisusedtostudythethermalpropertiesofthesccopolymers10％weightlosstcmpcra

6、tu化softheproductsa∞about400and500℃respectivelyTwokindsofsulfonatedpolymershaveexcellentsolubilitiesandnleycandissolveinpolarsolventsTouIghfilmsw∽o(hù)btainedbysolutioncastingmethodwithNmctbylpyrrolidoneThepropertiesoftlle∞me

7、mbraneshavebeenstudiedindeterwhichindudesolubilitywateruptake，swellingratio，oxidativeresistance，hydrolysisresistanceionexchangecapacityandprotonconductivi鈔e搬11leresultsshow血at：thetwokindsofcopolymorsperformverygoodpotent

8、ialUSagesinDhⅡ7CInordertoovorcolnetheshortcomingsofthepoly(phthalazinoneether)smembraneswehavetakenSPPEKKsfortheexampleandpreparedSP】P王KKcompositemembranesToimprovetheprotonconductivityoftheSPPEKKsmembranesWithlOWDS，soli

9、dinorganicprotonconductivebotonphosphateisintroducedintomembranesinsituprocessTheSPP哪K仍PO(compositemembraneshavebetterconductivitieswhilekeepingthe900dmechanicalandth舢prop嘶9comparedwithpureSP】)I勰membranesSPPEKKswithhi曲DS

10、showexcellentconductivityhowevertlleycanheavilyswellorevendissolve，whichrestrictsthemembranesfromoperationaboveahightolerabletemperatureTodealwiththeeontrndietorypolyethedmide(PEDisemployedtoblendwithSPPEKKwiththean瑚_Ilp

11、ttOtakeadvantageoftheinteractionbctwocnacidandbasegroupsofthetwopolymersResultsshowthatthetemperaturetOlerance，thcrmostability，swellingratiooxidativeresistanceandhydrolysisresistanceareimprovedgreatlywhileprotoneonduetiv