質(zhì)子交換膜力學性能研究.pdf

1、天津大學碩士學位論文質(zhì)子交換膜力學性能研究姓名：劉丹申請學位級別：碩士專業(yè)：化工過程機械指導教師：許莉201006ABSTRACTTheProtonExch繃geMemb珊e(PEM)istllecmcialpartofProtonExchaIlgeMenlbr鋤eFuelCells(PEMFCs)鋤ditsreliabilityhasessentialinflu∞ce伽吐lelifeofPEMFCs，soitisimport柚ttos

2、tudy廿lemech趴icalpropertiesofPEMsTheDyn鋤icMech鋤icalAnaIyser(DMAQ800)isusedtotestnleb鷦icmech鋤icalpr01)eniesiIlthiswo永111eN撕on@2l2w嬲exenedthecyclics骶ssesatitsoperatiIlgt鋤peranIre(85℃)，鋤dthech鋤geof砥ratchetiIlgs訂aill鋤ds臼ainra

3、tew鷸observedMoreoVer廿lee何’ectofmeans仃ess，s仃essamplitIlde鋤ds仃aillrateto廿leratchetillgs仃ainwereinVeStigated1naddition，itsmech鋤icalpropeniesiIlthesoakingenv的nmentofhi曲tanperanIre(70℃)w觴studiedtooBesidesthemsearchoft11ee岱：ct

4、ofsoal(mg劬e，鼬raillrate鋤dsoaking0rnotsoakingonthetellSileproper畎meea奄ctofs仃ess鋤dsoal(iIlg0rnotsoal(illg冊廿lemtchetingbehaviorw勰sttldiedThetestS11esultsiIldicatedtllatN抓on@212w嬲ratedependentmaterial鋤dtlles仃aillrateaa’ectedi

5、tstallg朗tmodulus，豫tchetillg蚰隱iIland蛐ramrateathi曲temperanIresE1se，meme觚stfess，sness鋤plitudeetchaddi腩renti芏lnu鋤ceonitsc)rclicloadillgpropeniesBeillgsoakedill廿1edeionizedwaterhadcenaille行ectoni協(xié)mech鋤icalpropeftiesThes仃essof

6、specilTlenat廿1es鋤es咖inlevelw笛increasedasmeiIlcre笛eofsoakir培tiIlleButme蜘silep哪r哆tendedtobecomestableafterthesplecimenw笛soakedfor24hoursThee仃ectofsoal(illgornotw硒small伽tIlemtchetiIlg仃en止whiletlleratchetillgStrainofnosoaJ(e

7、dSpecim∞w勰bigger廿1鋤matOfsoalcedspecim鋤岫der吐les鋤estresslevelThemechanicalpmperties(tensileproper晚creep—recoVerproper吼s打essrela】(ation)ofa婦dofd鯽esticPEMweresnldieduIlderdi胝mt鋤pe珊鵬s鋤ds仃ainmteswitlls仃aincoII仃olledmethodSTher

8、elationshipbetw黜el舔ticmodul啦，s打ess，stmiIl鋤dtempera：ture，loadingratew硒obtainedTheexp硎mentalresultsindic砷edtllattllegl嬲s協(xié)msitiont鋤peratureofGEFC@105b弱ed∞TanDeltaw雒slightlyhigherⅡl柚Nafion吼2l2IIltllecreep_recoverte甌thecre印s仃

9、ainillcreaSedquicklywitllnleiIlcre雒eof蚰ress，鋤dⅡleillcre舔ew勰moresignific觚t硒nletemperamrew明thigh既Additionally，t11ecre印strailliIlcreaSedsli曲tly邵Ⅱleillcre雒eoftempera：turetoo1nmerelaxati∞tests，tllebigger廿leiIlitial殉阻in，nlebig