PP熔体强度对加工性能的影响

:2001-01-21:,32,,,(,,210048):PP,PP,PP:(PP),,PP,,,PP,,,,,,PP,PPPP(HMSPP),PP11.1:PP(1.36g/10min),;PP(1.38g/10min),PP(MFR1.301.40g/10min),1.21.2.1[1],GOTTFERTMP-E,:MS=3.54105L2r02:L,50%;r0;MFR,2.16kg1.2.2GOTTFERTMP-E,D(mm)(DwellRatio)B(D-D0)/D0,D0(2.095mm)1.2.3MFRMFRGOTTFERTMP-E,2.16kg1.2.4DSCTA2000DSC,10/min1.2.5RME,180,0.05s-10.2s-122.1143ModernPlasticsProcessingandApplications20026©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,1,MFRPP,,,1PP2.2232PP3HMSPP2,3,PP,PPPP,,,PP,(165),,HMSPP,,HMSPPPP[2]2.3PP44PP4,MFR,,HMSPP,124,,PPHMSPPPP(112),(HMSPP0.17min,PP2.3min)[3],,2.4,[4,5],5,6,PPHMSPPPP,,,,,,HMSPP,,,,HMSPP,,PP01143©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.5PP:1012s-1;20105s-16HMSPP:1012s-1;20105s-13PPHMSPP,,,HMSPPPPMFRPP,PPHMSPP,,HMSPPPP1GuilletJE,etal.Effectofmolecularweightdistributionandbranch2ingonrheologicalparametersofpolyethylenemelts.Part,Un2fractionatedPolymers,JournalofAppliedPolymerScience,1965,2:7572LauHC,etal.Meltstrengthofpolypropylene:itsrelevancetother2moforming.PolymerEngineeringandScience,1998,38(11):783PhilipsEM,etal.Polypropylenewithhighmeltstrength.GermanPlastics,1992,82(8):234ScheveBJ,MayfieldJWandDenicolaAJ.US49161985KoyamaKandIshizakaO.JournalofPolymerScience,PartB,1989,27:297MELTSTRENGTHOFPOLYPROPYLENEANDITSEFFECTSONTHEPROCESSIBILITYHuangChengBaiJiyeWuXinyuanWangXingren(ResinDept.ofResearchInstituteofYangziPetrochemicalStockCo.,Ltd.,)ABSTRACTThedetermination,comparisionandcharacterizationofthedieswellratio,themeltstrengthunderdiffer2entextrusiontemperature,thecrystallizationtemperatureandthetensileviscositywereconductedbetweenho2mopolymerPP,block-copolymerPPandhigh-melt-strengthPPtoevaluatetheeffectsofmeltstrengthontheprocessibilityofPP,thusprovidingbasisfortheprocessingandapplicationsofPP.Keywords:polypropylene;meltstrength;branching;processibilityHDPEPolymerDigest,2001,53(9):9,HDPE2001HDPE,,HDPE20041020ktHDPEDOW,DOW,ÌŠÌ£™ZieglerHDPE,20%30%,LLDPE,HDPE,,HDPE()11.©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.