Cross-linking of styrene block copolymer sebs by peroxide

摘要

The chemical cross linking reaction of polystyrene-block-poly(ethylene-co-1-butene)-bloek-polystyrene three block copolymer (SEBS)was studied by DSC non-isothermal analysis and FTIR analysis.The cmsslinker for SEBS was benzoperoxide(BPO).It was found that reaction rate was enhanced with the increment of heating rate.The peak temperatureand end temperature in crosslinking moved to the high temperature.Besides.reaction rate raised with crosslinker content while exothermic peak and the total degree of reaction almost remained constant.