| Using natural rubber latex and carbon black N234 as raw materials,the carbon black filled powdered natural rubber[P(NR/CB)] was prepared by latex/carbon black coagulation method.The influence of addition level of carbon black and different recipes on the curing characteristics,physical properties,crosslink density,microstructure,Payne effect and dynamic mechanical properties of P(NR/CB) was investigated, and compared with conventional carbon black filled NR (CB/NR) by mechanical mixing. The results showed that,compared with CB/NR vulcanizates,the tensile strength,tear strength,resilience and wet skid resistance of P(NR/CB) vulcanizates were higher,the rolling resistance was lower,flexing resistance and wear resistance were similar,while the dynamic compression heat build-up and compression set were reduced by approximately 50%. |
