PEG型聚氨酯预聚体的研制

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:(1980-),,,,PEG,,,(1.,,471003;2.,471012):,(PEG)(TDI),-NCO,,:TDI/PEG11851190,0105%,,TDI,,:;;;;:TQ33414:B:1001-0017(2006)01-0054-03PreparationofPEGTypePolyurethanePrepolymerXIEFu-Chun,ZHUChang-Chun,ZHANGYu-QingandZHANGYing-Chao(11ChemicalEngineeringpharmaceuticalcollege,HenanUniversityofscienceandtechnology,Luoyang471003,China;21LuoyangJimingChem1Indus1Co1,Ltd1,Luoyang471012,China)Abstract:Inordertopreparecastingpolyurethaneelastomers,thepolyurethaneprepolymerswerefirstlysynthesizedbypolyethyleneglycol(PEG)andtoluenediisocyanate(TDI)1ReactiontimeandtemperaturewereascertainedbymeasuringpercentofNCOinprepolymer1Theresultsshowedthattheprepolymerswereofhighstability,lowfreeNCOandlowviscosity1TheperformanceofcastingpolyurethaneelastomerswereexcellentwhentheratioofTDI/PEGwasselectedbetween11851190andthemoisturepercentwascontrolledunder0105%;Keywords:polyethyleneglycol;toluenediisocyanate;polyurethane;prepolymer;preparation,,3:[1](TDI)4,4-(MDI)(IPDI),TDI,20/80TDI2,4-TDI,MDI[2](PEG),,;,,,,,[3]PEGTDITDI;TDI,,,TDI1,4-(BDO),,,TDI1111PEG:1000,1500,2000;011%,20/80-TDI:2,6-TDI/2,4-TDI20/80,TDI9916%,9161316,,BDO:26,012%,11211211:PEG,,10511013313Pa45,PEGVol.28.No.1,2006©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:PEGTDI,8085,15minNCO(%),NCO(%)11213:60,BDO,80,,5min;,11035h11312NCO(%)3:GB/T2794-1995;NXS-11A,1141:GB531-1999;LX-A,2:GB/T1040-79;LJ-5000N,22111Table1Thetemperatureandtimeofsynthesisofprepolymer//minPEG-1000PEG-1500PEG-20007580110135145808510511512020/80-TDI2,4-2,6-,-NCO,-NCO,70,;95,,[4]758080851NCO(%)PEG-1000TDI,,PEG-1000,,,TDIPEG-1500PEG-2000,PEG-1500PEG-2000,,,,,8085,2h212TDI/PEGPEGTDI,[5]PEG,TDI/PEG1185,;,TDI/PEG,2TDI,2TDI/PEGTable2EffectofTDI/PEG(molarratio)onpolyurethaneprepolymerviscosityPEGTDI/PEG()10001178118611912000116911851195/mPas689432451775554562350PEG,TDI/PEG1190,TDITDI/PEG,3TDI/PEG,TDI/PEG118511903TDI/PEGTDITable3EffectofTDI/PEG(molarratio)onfreeTDIofpolyurethaneprepolymerPEGTDI/PEG()10001183119021072000118111882104TDI/%014701521163014101461147213,;:1,;2,,;,,,,RNCO+HOH[RNHCOOH]RNH2+CO2RNH2+RNCORNHCONHR,CO218g1molTDI,2214LCO2,,0105%[6]110115h,0103%,214TDI552006281CHEMISTRYANDADHESION©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[7]PEGNCO,TDI4TDITable4EffectofdifferentmassfractionoffreeTDIonpropertiesofpolyurethaneprepolymersPEGNCO/%TDI/%1000318941010148115620003111311401351106(A)60635557300%/MPa3174317631453147/%610620685680/MPa2218191418131617/MPa463940332155Table5Effectofpreservingtimeonprepolymerandelastomer/d015304560NCO/%41084107410641044103(A)6565676668/%540540535530530300%/MPa31673167316831693169/MPa51125113511451145115/MPa20142016201720162016NCO4108%PEG-1000,2560,;NCO,011%,;,3-NCO,2h,8085TDI/PEG11851190;0105%;,[1],.NCO[J].,2002,29(2):3738.[2].[M].:.2001,246247.[3]KOIDEA,TAKEDAK.Moisturepermeablewaterproofmembranescontainingpolyether-polyestercopolymersandpolysiloxanes[P].JP082585,2003-03-19.[4],,.TDI[J].,2004,(1):2830.[5]WILLIAME,SLACKM,etal.Freeze-stableAllophanateModifiedTolueneDiisocyanateTrimers[P].US6028158A,2000-02-22.[6].[J].,1997,11(2):1118.[7]ONDER,KEMAL.High-molecular-weightthermoplasticpolyurethanesmadefrompolyolshavinghighsecondaryhydroxylcon2tentandtheirpreparation[P].WO2064656,2002-08-22.06-008[,,,1()()015%();,100Pas:(HamatiteWS292),,,30min,1h]KawaseToy2oo,(Hori).JP(K)2005146035A2,2005-06-0906-009[:(MA320)6[1013G(H)30-1],r-,,,]HaradaHiroyuki(Hori).JP(K)2005146206A2,2005-06-0906-010[-(),65323()-2----(),(0193%),]NogamiEiji,etal().JP(K)2005154602A2,2005-06-1665,PEGVol.28.No.1,2006