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1、MaterialsandDesign39(2012)437–443ContentslistsavailableatSciVerseScienceDirectMaterialsandDesignjournalhomepage:www.elsevier.com/locate/matdesUseofstyrenebutadienerubberindustrialwastedevulcanizedbymicrowaveinrubbercompositesforautomotiveapplicationaa,baa
2、a,⇑A.Zanchet,L.N.Carli,M.Giovanela,R.N.Brandalise,J.S.CrespoaCentrodeCiênciasExataseTecnologia,UniversidadedeCaxiasdoSul,RuaFranciscoGetúlioVargas,1130,CaxiasdoSul95070-560,RS,BrazilbInstitutodeQuímica,UniversidadeFederaldoRioGrandedoSul,Av.BentoGonçalves
3、,9500,PortoAlegre91501-970,RS,BrazilarticleinfoabstractArticlehistory:Theaimofthisworkwastodevelopandcharacterizestyrenebutadienerubber(SBR)compositesfilledReceived30January2012withSBRindustrialscraps(SBR-r)devulcanizedbymicrowave.TheSBR-rwasgroundunderamb
4、ientcon-Accepted10March2012ditionsandsubjectedtomicrowaveexposurefor1,2and3min.ThecompositesweredevelopedbytheAvailableonline19March2012incorporationof80phr(partsperhundredofrubber)ofthedevulcanizedSBR-rintotherubbermatrixandsubsequentrevulcanization.Ther
5、heometricandphysical–mechanicalproperties(shoreAhardness,Keywords:compressionset,tensileandtearstrength)weredetermined.ThesamplesweresubmittedtotwotypesElastomersandrubberofacceleratedagingprocesses,inanairoven(thermo-oxidation)andanartificialweatheringtes
6、tinaRecyclingUVchamber(photo-oxidation).TheresultswerecomparedwithacontrolsamplesubmittedtothesameMechanicalconditions.Forfurtherapplicationinautomotiveprofiles,thesetofresultsindicatedthatthebestperfor-mancewasachievedbythecompositecontainingSBR-rdevulcan
7、izedfor2mininamicrowave.Forthiscomposite,thechangesinthechemicalcharacteristicsafteragingwereevaluatedwithcross-linkdensityandAttenuatedTotalReflectance–FourierTransformInfraredSpectroscopy(ATR–FTIR)analyses.Theresultsrevealedthattheagingmechanismwasdepend
8、entonthepresenceofSBR-randonthetimeofaging.Thecross-linkdensityanalysisconfirmedtheoccurrenceofcross-linkscissioningatshorteragingtimesandtheformationofadditionalcross-linkinginthepostcureprocess.TheATR–FTIRresultsin
