橡胶型氯化聚乙烯与三元乙丙橡胶共混胶性能的研究

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1、青岛科技人学研究生学位论文STUDYONPROPERTIESOFCHLORINArEDPOLYETHYLBNEANDETHYIENEPROPYLENETERPOLYMERBLENDSABSTRACTThecompatibility,processability,curingsystem，reinforcementsystemandphasestructureofchlorinatedpolyethylene(CM)andethylenepropyleneterpolymer(EPDM)blendshavebeeninvestigated．

2、Theimprovedofprocessiblity,physical-mechanicalproperties，flameresistance，oilresistance，andlowcostofEPDMcompoundswereachievedwithCM．byblending(1)ThemiscibilityofCM／EPDMblendswerestudiedbyfouriertransforminfraredspectroscopy(Fria)，differentialscanningcalorimetry(DSC)，phase-

3、comrastmicroscopeanalysisandcalculationoftheheatofmixing．TheoreticalcomputationandtheexperimentalresultsshowedthatCMandEPDMhadsomeinteractionwitheachother,andtheirTgswereclosetoeachotherafterblending，andtheyalsohasgoodphasedistributionandfuzzyphaseinterface．Itisfoundbythe

4、rmaldegradationanalysisthattheblend’Sinitialdecompositiontemperatureincreasedgradually，thermalstabilitydroppedbutflameresistanceimprovedwiththedecreaseoftheblendratioofCM／EPDM．Byscanningelectronmicroscopy(SEM)observation，additionofthecompatibilizerethylene·-pmpylene--dien

5、emonomergraftedmaleicanhydride(EPDM—g—MAn)improvedmicrocosmicmorphologyandcompatibilityoftheblend．Atthesametime，uniformlyblendinterfacewithoutordecreasedwasphaseseparationformed，andtheinterfacebecamefuzzy,interfacethicknessauswellasbondingstrengthenhancedbetweenthem．FnRan

6、dDSCdisplayedtherewasSomeinteractioninSomedegreebetweenthecompatibilizerandCM／EPDMblends．Theimprovementofphysicalpropertiesshowedthattheblendshadgoodcompatibilityaftertheadditionofin橡胶型氯化聚乙烯与三元乙丙橡胶共混胶性能的研究thecompatibilizer．(2)Thecuringpropertiesandphysical-mechanicalprope

7、rtiesofCM／EPDMblendcorrespondingtoeightdifferentvulcanizingsystemswereinvestigatedbyUniformDesign，itwasfoundthattheCM／EPDMblendvulcanizedbyperoxide—sulfur(DCP—S)vulcanizingsystemhadtheappropriatevulcanizationtimeandbeRerphysicalproperties，andtheoptimumratiowas3／0．5．Theopt

8、imumamountofDCPandtheTriallylisocyanurate(TALC)inductedbyRCADrangesfrom2．8to4．0phrand3．0—5．0phrr