端胺基聚氨酯增韧环氧树脂的研究

3362006JOURNALOFBEIJINGUNIVERSITYOFCHEMICALTECHNOLOGYVol.33,No.520063(,100029):(PEG)(TDI)(m2XDA)(ATPU),,,ATPU1237,(2512kJ/m2),2:;;:O633113:2006204228:,1976,3E2mail:[e-mail],,[1],,[2][3][4][5],,,,2(ATPU),A(E244),,;[6]1111(E244),01401476,;2,42(TDI80/20),BASF;(PEG),200400600,;(m2XDA),,();(DMSO),,;(THF),,112CDR21(DSC),,,10/min,40200UV23101(IR)CharpyXCJ2500,,GB2632886HITACHI2650X,SEMGB/T7l24l986,10mm/min113(ATPU)11311,120,665Pa3h,013%,20,N2TDIN280NCO([7]),11312(ATPU)2THF,(31),2030/min11311PU2THF,40,,3hATPUn(NCO)/n(OH),ATPU,ATPU1[8][9]1(ATPU)Fig.1StructuralformulaofATPU,11Table1FormulationandpropertiesofATPUsamplesMn(PEG)n(TDI)n(PEG)n(m2XDA)Mn(ATPU)a)ATPU21200212820825136.59131.21ATPU2240021210201024109.80104.58ATPU232003221195120193.7291.40ATPU246002121220123791.8085.28ATPU254003221595160870.2265.47ATPU266003221995201356.1450.49a)KOH,mg11313(ATPUNH2013019),,1122211ATPUIRIRATPU2PU(a)(ATPU22)2(b)(a),(b)2273cm-1NCO,1643cm-1PU,33003500cm-1,NCONH2,[10]aPU;bATPU222PUATPUFig.2IRspectraofPUpre2polymerandATPU3/APU21DSCFig.3DSCcurveofcuredepoxyATPU22/E244212ATPU/EP244IR/DSC(E244)ATPU22(NH241)DSC,3E244ATPU22DSCATPU[8],766:93(a)ATPU;,,,,159(b)[11-12],E244/ATPU22,606h806h1203h,IR4,606h,914cm-1,806h,1203h,ATPU/E244804,806hIR,806h1203hIR1650cm-1,33003350cm-1NH,806h1203h(a)60,6h;(b)80,6h;(c)80,6h,120,3h4/ATPU22Fig.4IRspectraofproductscurredatdifferenttemperatures213[13]5,ATPU,,Mn1200,,,Mn,,,,ATPU,5Fig.5Effectofcuringagentsofdifferentmolecualrweightonshearstrengthandbreakingelongationrate214ATPUE244,ATPU22,,ATPU1237ATPU24,m2XDA/E244(711kJ/m2)3,,,,6/E244AT2PU/E2446(a),,,,,E244,8620066(b)6(c)6(d),,,,,,,26Table2Impactstrengthofdifferentcuredsystemsn()n(NH2)/(kJ/m2)n()n(NH2)/(kJ/m2)E244/ATPU21101713.9E244/ATPU2410.725.2E244/ATPU2210.716.3E244/ATPU2510.723.8E244/ATPU2310.722.8E244/ATPU2610.712.4808h1203h6Fig.6SEMmicrographsoffracturedsurfacesofcuredepoxyresins3(1)2ATPU,,NCONH2m2XDAATPU,(2)ATPUE244:ATPU,ATPU/E24480120(3)(20%36%)(13192512kJ/m2),13MPa(4),[1].[M].:,2002:4-5.966:[2]ZhangBL,TangGL,ShiKY,etal.Studiesonthepropertiesofepoxyresintoughedbyanovelreactivetougheningaccelerator2Investigationonthefracturesur2faceofthemodifiedcuringsystem[J].JApplPolymSci,1999,71(1):177-184.[3],,,.[J].,2002,18(4):15-18.[4]BennettGS,FarrisRJ,ThomasonSA.Amine2termi2natedPAEKexpoxy/amineresinsystemsastoughhighperformancematerials[J].Polymer,1991,32:1663-1641.[5]HunFJ,HuCP.Interpenetratingpolymernetworksofepoxyresinandurethaneacrylateresin[J].EuropeanPolymerJournal,1999,35:103-112.[6].2[J].,1993,32(1):40-45.[7].[M].:,2001:627-630.[8],,.[J].,2000,9(5):10-12.[9].:[M].:,1982:95-96.[10],,,.[J].,2003,37(4):424-427.[11].[M].:,2003:125-126.[12],.[J].,1992,15(1):30-32.[13],,,./[J].,2003,19(5):127-130.Studyofepoxyresintoughenedbyamino2terminatedpolyurethaneCHENJian2junJIANGZhi2guoHUANG2liLIXiao2yu(CollegeofMaterialsScienceandEngineering,BeijingUniversityofChemicalTechnology,Beijing100029,China)Abstract:Amino2terminatedpolyurethane(ATPU)wassynthesizedfrompolyethyleneglycol(PEG),iso2cyanates,andm2XDAandacuredepoxyresinsystemwasformedusingATPUasatougheningcuringagent.Mechanicalpropertiesandfracturesurfacemorphologyofthesystemwereinvestigatedsystematically.There2sultsshowedthatthefracturesurfaceofthemodifiedsystemsdisplayedtoughfracturefeatures,markedlydiffer2entfromthatoftheunmodifiedepoxyresinsystem.Themodifiedsystemhadamaximumimpactstrengthof2512kJ/m2,whichwasthreetimesthatoftheunmodifiedsystem,whenthemolecularweightofthecuringa2gentATPUwas1237.Keywords:amion2terminatedpolyurethane;toughening;epoxyresin20052006,2005:398,01338,501365,01065,0192,236,319,2005170,0158,Web1613(CAJCED)20056182214CNKI2005112(115)072006