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21220014JournalofBeijingInstituteofTechnologyVol.21No.2Apr.2001:100120645(2001)0220260206IPDI,,,,,(,100081):2,1,42(TPU),DSC,DMA,TEM,WAXD,Z,,,,,ZWAXD,TPUZ45%50%,Z:;;;:O631:A:20000529:863:(1974-),,;(1936-),,,Z(TPU)(A2B)n,Z[1,2],(MDI)(TDI),(PTMO)(PPO),(IPDI)2TPUZ2TPU[3]Z,2,1,42,(DSC),(TEM),(DMA),X(WAXD)Z1111ö(P(E2Co2T),PET):,Mn=4850,(OH)21191g,EOöTHF50ö50,2,902h;(IPDI):Huls,9919%;1,42:,Z,90,110Z112Instron26022,100mmömin,293KZ(DSC)PEDSC27DSC,20KöminZ(DMA)PEDMA27,2KöminZ(TEM)HITACHIH2800,,OsO4015hZX(WAXD)RigakuDömax22400XWAXDZ2211ZZTPU,Instron,1Z1TPUwhö%RmöMPaEmö%RböMPaEbö%tgöPET35355168561190600-67PET40406107803149600-69PET454591926009192600-69PET50501616060016160600-71PET55551918041519180415-71PET606023140742314074-721,(wh,TPU),TPU,Z,,TPU,,Z(DSC,DMA,TEM)Z1,45%50%,TPUZ212DSCZTPU1622:IPDI,tgtmZ1TPUDSCDSC,TPU,TPUTPUZTPUDSC11Z11,,TPU,-67-72Z,,ZSchneiderMDI2BDO2[4]ZKoleske(PCP)2MDI2BDO[5],PCP,(3000)PCP(40%60%),Z5000,Koleske3000,,,Z,ZSchneider[1],DSC,3:(É),(Ê),(Ë)Z,Cooper[2],,,É,Ê;,ÉÊ,ËZTPU,,DSC,Z,,,,ËDSCZWAXDZ1,50%,DSC5070,,ZHewitt[6]ZZ,,,ZTPU,,Z,ZDSC,,Z,DSCZ213DMADMATPU,2ZTPU-6585tanDZ,262212TPUDMA60%TPU,Z-65,85,Z2DMATPU,,Z,,,[7],,,tanDZ,TPUZ2,45%60%,(7898),,DSCZ,,,Z214TEMTPUZTPUZ3TPU(,)Z(a)PET35(b)PET45(c)PET50(d)PET553TPUTEM3,TPU,,,,,Z3622:IPDI,,,,Z,Z,TPU,,,,,,ZPET,Z215XTPUX,2H=20,Z2,1,42,[3]Z2,,,,1,42,WAXDZ32,1,42Z,,,,Z45%50%,Z,TPUZ:[1]CloughSB,SchneiderNS.Preparationandpropertiesofsegmentedthermoplasticpolyurethaneelastomerswithtwodifferentsoftsegments[J].JMacromolSciPhys,1968,2:553-560.[2]SeymourRW,CooperSL.Thermalanalysisofpolyurethaneblockpolymers[J].Macromolecules,1973,6(1):48-53.[3]ZhangBaoyan,TanHuimin.Studiesofnovelsegmentedcopolyetherpolyurethanes[J].EurPolymJ,1998,34(3-4):571-575.[4]IllingerJL,SchneiderNS,KaraszFE.Lowtemperaturedynamicmechanicalpropertiesofpolyurethane2polyetherblockcopolymers[J].PolymEngSci,1972,12:25-32.[5]SeefriedCGJr,KoleskeJV,CritchfieldFE.Thermoplasticurethaneelastomers:ÊEffectsofsoftsegmentvariations[J].JApplPolymSci,1975,19:2493-2502.[6]SchollenbergerCS,HewittLE.Differentialscanningcalorimetryanalysisofmorphologicalchangesinsegmentedelastomers[J].PolymPreprints,1978,19:17-18.[7]HashimotoT,TsukaharaY,TachiK,etal.Structureandpropertiesoftaperedblockpolymers:4Domain2boundarymixingandmixing2in2domaineffectsonmicrodomainmorphologyandlineardynamicmechanicalresponse[J].Macromolecules,1983,16:648-657.46221MorphologyandPropertiesofThermoplasticPolyetherPolyurethaneBasedonIPDICHENFu2tai,DUOYing2quan,LIXiao2meng,ZHOUGui2zhong,LUOYun2jun,TANHui2min(SchoolofChemicalEngineeringandMaterialsScience,BeijingInstituteofTechnology,Beijing100081,China)Abstract:Aseriesofnovelsegmentedthermoplasticpolyetherpolyurethaneelastomersbasedontetrahydrofuran2ethyleneoxidecopolyether[P(E2Co2T)]asthesoftsegmentsandisophoronediisocyanate(IPDI)extendedwith1,42butanediol(BDO)asthehardsegmentsweresynthesizedtostudytherelationshipsbetweenmorphologyandproperties.Theexperimentaltechniquesutilizedweretensiletesting,DSC,DMA,TEMandWAXD.TheresultsshowthattheTPUshavetypicalmicrophaseseparation,itaswellasthestressincreasewithhard2segmentconcentrationincreasing,whilethestraindecreases.WAXDresultsindicatethatallelastomersarecompletelyamorphousatalllevelsofhard2segmentconcentration.Whenthehard2segmentconcentrationiscontrolledin45%50%,theintegrativepropertiesofTPUareoptimum.Keywords:thermoplasticpolyurethane;microphaseseparation;morphology;thermalanalysis31,31,,Z,,953Z5622:IPDI