白炭黑在天然橡胶丁苯橡胶并用胶中偏析现象的定量表征贺敬虹

352Vol．35No．220192POLYMERMATERIALSSCIENCEANDENGINEERINGFeb．2019/266042、、NR/SBR。NR。-NR。TQ332A1000-7555201902-0121-05doi10．16865/[e-mail]1。Jeon2/Marina3NMR/IR/BRChakrit4/BR/NBR56、DSC、SEM、DMA/NR/BRLe7FT-IR//NR/SBR/NBR。。--。。DMA、FT-IR、DRSNR/SBR。11．1SMR10104526-01165MP、、、。HAKKEThermoScientificBL-6175HS100T-RTMO-905MDR2000ALPHADMA242NETZSCHDMTS500NGABONOVOCON-TROLFT-IRBRUKER。1．21NR。NR1mmNRSBR。2HAKKE。90℃70r/min0.75145℃。30.2mm62mm。Tab．1ExperimentformulaforunfilledrubberNRSBRSDPGNSTMTDZnOSA1100020．810．2312010020．810．2313505020．810．2314604020．810．231Tab．2ExperimentalformulaforsilicafilledrubberNRSBRTMTDSNSDPGSilicaSi-69ZnOSA110000．2210．840431201000．2210．840431320800．2210．840431430700．2210．840431540600．2210．840431650500．2210．840431760400．2210．840431870300．2210．840431980200．2210．8404313。160℃GB/T16584－1996《》160℃、T90+2min。Fig．1VariationofT90withincreaseofNRcontentsinblendsFig．1T90NR/SBRNR。NRT90NRNR/SBRNR。1．31．3．1GABODMTS500N40phrNR/SBR。－90～100℃10Hz2K/min。NETZSCHDMA24240phrNR/SBR。－90～100℃2℃/min1Hz。1．3．240phrNR-50NR-60。2cmSBR0～30℃NRNR/SBR－30～30℃。10－1～107Hz。1．3．340phr0.5g50mL48h24h60℃24h。。22．1tanδmaxtanδmax。NR、SBRNR/SBRtanδmax8。NR/SBRtanδmax1。R=tanδgmax－tanδfmaxtanδgmax1R———tanδmaxtanδmax-gf———。tanδtanδmaxNRSBRtanδmax。2。W1'=R1'R2WR1'R2+R2'R1212———2R———R'———W1'W2'———12W。40phrNR-30、NR-40、NR-50、NR-60NR-7012NRSBR22212019。Fig．2SegregationbehaviorofsilicaincompoundswithblendingratiosbyDMAFig．2NR/SBR30∶70、40∶60、50∶50、60∶40、70∶305DMA。DMANR/SBRNR。NR/SBR-。NRSBR。Fig.1NR/SBRNRSBRNRSBR。2．2tanδ。α-。NR/SBR3NR-40、NR-50NR-60DMA。DRSDMA-DRSDMA。DMAtanδmaxDRStanδmax。R3。R=|tanδgmax－tanδfmax|tanδgmax340phrNR-40、NR-50NR-6032NRSBR。Fig．3SegregationbehaviorofsilicaincompoundswithblendingratiosbyDRSFig．340phrNR∶SBR40∶60、50∶50、60∶40NR-40、NR-50、NR-60。33NR。DMA。2．3NR/SBR。L910。Le7NRNRNRSBR。2．3．1NR/SBRFT-IR。ANR/ASBRNR/SBRfNR/SBR=2．72511Fig．4。Fig．4NR/SBRNRSBRFT-IR。NR/SBRNR、SBR3212/NR。Fig．4Ratioofpeakareasincompoundswithdifferentblendingratios2．3．2NR/SBR4NRSBRSBNRSBSBR=LPSBRLPNR×LBNRLBSBR4SBSBRSBNR———SBRNRLPSBRLPNR———SBRNR2LBSBRLBNR———NR/SBRNRSBR。5L=m2－m1×csm25m1———m2———-cs———。6LBNRLBSBR=1fNR/SBR×ANRASBR6LBSBRLBNR———SBRNRfNR/SBR———Fig.4ASBRANR———SBRNR。NR/SBRFT-IR4、5、6NRSBRNR/SBR。Fig．5NR/SBR。NR、SBRNR/SBRNR。Fig．5Segregationbehaviorincompoundswithdifferentblend-ingratiosbyFT-IR3。DMA。。13NR/SBRNR。2NR/SBR-。3。1．J．2012391021-27．NaHD．DispersionmechanismofcarbonblackinrubbercompoundJ．RubberIndustryofWorld2012391021-27．2JeonIHKimHKimSG．Characterizationofrubbermicro-morphologybyatomicforcemicroscopyAFMJ．RubberChem．Technol．2003761-11．3MarinaKHidehikoDHideakiKetal．Characterizationofcarbonfillerdistributionratioinpolyisoprene/polybutadienerubberblendsbyhigh-resolutionsolid-state13C-NMRJ．Macromolecules2007409451-9454．42120194ChakritSNootjareeP．StudyofcarbonblackdistributioninBR/NBRblendsbasedondampingpropertiesinfluencesofcarbonblackparti-clesizefillerandrubberpolarityJ．J．Appl．Polym．Sci．2001813198-3203．5．NR/BRJ．200956129-32．ChenKWuCF．TheinfluenceofblendingprocessonthepropertiesofsilicareinforcedNR/BRblendsJ．RubberIndustry200956129-32．6．SBR/BRJ．201057298-101．WuYFXuHY．Theeffectofcombinedrubberontheinterfacein-teractionofSBR/BRblendsJ．RubberIndustry201057298-101．7LeHHOβwaldKIlischSetal．SilicatransferinternaryrubberblendscalculationandexperimentaldeterminationJ．Macromol．Mater．Eng．2012297464-473．8PhewphongPSaeouiP．Theuseofdynamicmechanicalthermalanal-ysistechniquefordetermininganunevendistributionofprecipitatedsilicainCPE/NRblendsJ．Polym．Test．200827873-880．9LeHHIlischS．KineticsofthephaseselectivelocalizationofsilicainrubberblendsJ．Polym．Compos．2010101701-1711．10．J．2014116-22．QuantitativeCharacterizationofSilicaSegregationBehaviorinNaturalRubber/StyreneButadieneRubberBlendsJinghongHeJianLiFuruiLiuPingZhangChongSunKeyLaboratoryofRubberandPlasticMaterialsandEngineeringofMinistryofEducationQingdaoUniversityofScienceandTechnologyQingdao266042ChinaABSTRACTThesegregationbehaviorofsilicainnaturalrubberNR/styrenebutadienerubberSBRblendswasinvestigatedbydielectricrelaxationspectrumFouriertransforminfraredspectrumanddynamicmechanicalanalysis．Anditwasdetectedquantitatively．TheresultsshowthatthesilicaiseasytolocateatNRphase．ItisindependentontheratiobetweenNRandSBR．Thesegregationbehaviorisnotonlyrelatedtofiller-polymerinteractionbutalsorelatestosilicanetworkstructurewithdifferentsizeswhichareformedindifferentrubberphases．TheresultsforsilicafilledNR/SBRvulcanizateswithdifferentratiosbetweenNRandSBRshowthatthesilicaisstilleasytolocateatNRphase．Thequantitativeresultsbetweencompoundsandvulcanizatesaredifferentwhichindicatethatthevulcanizationprocesshasasignificanteffectonthefillersegregationbehavior．Keywordsnaturalrubberstyrenebutadienerubbersilicasegregation5212/