414.1.4 Compounding and vulcanizationconventionalaccelerated-sulphursystemsslowercuringhigher acceleratorlevels to achieveequivalentcure times
◼ conventional accelerated-sulphur systems ◼slower curing ◼higher accelerator levels to achieve equivalent cure times 4.4.1.4 Compounding and vulcanization
4.4.1.5ProcessingNo mastication :Mixing:Shaping:
4.4.1.5 Processing No mastication : Mixing: Shaping:
4.4.1.6Applications70%SBR:tyre industrymechanical goodsshoe soling鞋底carpet underlay
4.4.1.6 Applications ▪ 70% SBR : tyre industry ▪ mechanical goods ▪ shoe soling鞋底 ▪ carpet underlay
4.4.2 Butadiene rubber (BR){CH2CH2 十nHHPolybutadieneZieglar-NattaCH=CH←CH2CH2npolymerizationCHCHCHCH2
4.4.2 Butadiene rubber (BR)
IntroductionBRranksthirdafterNRandSBROverthree-quartersof the BRproduced is used in tyres and tyreproductsTherestis used in the manufactureofhigh-impactpolystyrene
BR ranks third after NR and SBR ▪Over three-quarters of the BR produced is used in tyres and tyre products ▪The rest is used in the manufacture of high-impact polystyrene. Introduction