EVOH的流变性能

30220092JournalofTextileResearchVol.30No.2Feb.2009:02539721(2009)02000904EVOH王瑞,李树锋,黄俊鹏(,300160)PETEVOH,,EVOH,EVOH,1,250260,EVOH240,0712,240250260,EVOH400~500Jmol,;;;;:TQ342206:ARheologicalbehaviorofEVOHWANGRui,LIShufeng,HUANGJunpeng(TianjinKeyLaboratoryofFiberModificationandFunctionalFiber,TianjinPolytechnicUniversity,Tianjin300160,China)AbstractAseriesofstudiesontherheologicalbehaviorofEVOHmeltwerecarriedon,soastoprovidetheoptimalspinningparameterstopreparethePETEVOHsheathcorefiber.TheexperimentalresultsshowedthatEVOHbelongstothepseudoplasticityliquid,thenonNewtonexponentislessthan1andtheapparentviscositydecreaseswiththeincreasingofthetemperatureortheshearrate.ThenonNewtonexponentofEVOHis0712whenextrusionspinningiscarriedoutatthetemperatureof240,whichisclosertotheNewtonliquidascomparedwithspinningatthetemperatureof250and260.TheactivationenergyofEVOHisbetween400and500Jmolwhenspinningperformedat240,250and260,whichincreaseswiththeincreasingoftheshearrate.KeywordsEVOH(ethylenevinylalcohol);rheologicalbehavior;spinnability;activationenergy;nonNewtonexponent:2008-03-06:2008-07-11:王瑞(1960),男,教授,博士主要从事纺织材料及纤维复合材料等的研究Email:[e-mail],,[1-4]EVOH175~250[5-6],,1990,EVOH,EVOH,EVOHEVOHPET[7]EVOH[8-10]EVOH[10-11]PETEVOH[12],EVOH,EVOHBrabenberOHG,EVOH,PETEVOH111EVOH12Kulturstr5155,BrabenberOHG13(LD)151,201,301,20406080min-1,[7]1)=PR2L=6Q!R3∀=:QP;RL;∀(Pa!s)(s-1)(Pa)2)Bagley=P*H2L=4Q!R3∀=Rabinowitch:t=43+dlgdlgwt=PR2(L+L):tt;w;L221EVOH,290PETEVOH,EVOH1EVOH,240,EVOH;240250260,,EVOH1EVOHFig.1RheologiccurveofEVOHatdifferenttemperatures22,Arrhenius∀=AexpERT,ln∀=lnA+ER1T:E;∀,Pa!s;T,K;R;A1,EVOH,22EVOHFig.2RelationshipoftheapparentviscosityandtemperatureofEVOHunderdifferentshearrates2,ln∀1T,Arrhenius,!10!30E,11EVOHETab.1ActivationenergyofEVOHunderdifferentshearratesJmols-1500080001001612000ln∀-767-870-1010-1070ER548548612638E427456508530E1,,EVOHE,,400~500Jmol23nn,nn=1,,,n1,n1,,;n,,n∀=K(n-1),ln∀=lnK+(n-1)ln,,lnln∀(3),,n3EVOHFig.3RelationshipofapparentviscosityandshearrateofEVOHatdifferenttemperaturelnln∀n,22EVOHTab.2NonNewtonexponentofEVOHunderdifferenttemperaturelnKn-1n240560-02880712250692-04530547260665-043105692,EVOH2402502601,,3EVOH,PETEVOH1),EVOHEVOH2402502601,,2),EVOHE,,400~500Jmol,EVOHFZXB:[1],.EVOH[J].,2000,12(4):39-40.LIUBoyuan,XULinxiu.EVOHresinwithgoodbarrierproperty[J].ModernPlasticProcessingandApplications,2000,12(4):39-40.[2],,,.HDPEEVOH[J].,1999,27(3):40-41.CHENYongfen,XIANGMing,SUNYangxuan,etal.MorphologicalstructureofHDPEEVOHbarriermaterial[J].ChinaPlasticsIndustry,1999,27(3):40-41.[3],,,.EVOH[J].,2000(4):23-25.PENGShaoxian,SONGXuyan,YINGJiru,etal.StudyontheimprovedwaysandcharacteristicsofEVOHresin[J].PlasticsScienceandTechnology,2000(4):23-25.[4]PETERMaplaston.ThemoformableEVOHisdesignedtomeetflexiblepackingneeds[J].ModernPlasticsInternational,1997(1):109.[5].[J].,1999(1):!11!2:EVOH41-45.ZOUShengou.Fuctionalpolymersforpacking[J].PlasticsScienceandTechnology,1999(1):41-45.[6].EVOH[J].,1990(1):63-70.TANGJiawei.EVOHresin[J].SyntheticResinandPlastics,1990(1):63-70.[7],,.[J].,2002,31(4):16-19.HUShaohua,HUANGSuping,ZHANGYueting.Ethylenevinylalcoholcopolymerfiber[J].SyntheticFiberinChina,2002,31(4):16-19.[8].EVOH[J].,2006,11(6):129-132.DAILijun.SynthesisandcharacterizationofEVOHbasedcombpolymer[J].JournalofHarbinUniversityofScienceandTechnology,2006,11(6):129-132.[9].EVOH[J].:,2007,23(3):273-276.DAILijun.StudyonstructureandpropertyofEVOHionpolymer[J].JournalofHarbinUniversityofCommerce:NaturalScienceEdition,2006,11(6):129-132.[10].EVOHSO3K[J].,2007,15(1):64-67.DAILijun.Synthesisandelectrospinningofpoly(ethylenecovinylalcohol)endcappedwithpotassiumsulfonateionomer[J].MaterialsScienceandTechnology,2006,11(6):129-132.[11],,.EVOHTiO2[J].,2006(3):17-19.ZHENGYan,ZHANGYujun,SUNShidong.StudyonpreparationofEVOHTiO2nonwovensbyelectrospinning[J].FiberComposites,2006(3):17-19.[12],,,.PETEVOH[J].,2008,29(3):5-8.LIShufeng,WANGRui,KANGWeimin.HygroscopicityofthePETEVOHsheathcarefiber[J].JournalofTextileResearch,2008,29(3):5-8.(上接第4页),,;,300FZXB:[1],,,.[J].,2007(1):16-20.ZHURuitian,YANYurong,ZHANHuaiyu,etal.ChemicalmodificationonPANfibers[J].ChemicalFiber&TextileTechnology,2007(1):16-20.[2],,,.[M].2.:,2005:129-130.XIAOChangfa,YINCuiyu,ZHANGHua,etal.IntroductiontoChemistryFiber[M].2ndEdition.Beijing:ChinaTextile&ApparelPress,2005:129-130.[3],,,.[J].,2001(3):5-7.RENGuoqiang,GUWenlan,XUJing,etal.ExperimentofPANwithvinylacetateasthesecondmonomer[J].PetrochemicalTechnologyinJinshan,2001(3):5-7.[4],.[J].,2007,33(17):15-18.ZHAOHaiyang,YAOJinbo.Dyeingbehaviorsofanovelacrylicfiber[J].DyeingandFinishing,2007,33(17):15-18.[5].[M].:,1983:18.HUANGYiqiu.DyeingandFinishingofPAN[M].Beijing:ChinaTextile&ApparelPress,1983:18.[6]LIMKY,YOONKJ,KIMBC.Highlyabsorbablelyocellfiberspunfromcelluloses/hydrolyzedstarchgPANsolutioninNMMOmonohydrate[J].EuropeanPolymerJournal,2003,39(11):2115-2120.[7],.[M].:,1996:72.CHENJie,SONGQize.OrganicSpectroscopy[M].Beijing:BeijingInstituteofTechnologyPress,1996:72.[8].[M].:,2004:152,278.CAIZaisheng.ChemistryandPh