Study on the influence of VFSBR on NR tread rubber

In this paper,the ultra-fine full-vulcanized powdered styrene-butadiene rubber(UFPSBR) was first added into the commonly using NR tread system,and the influence of ultra-fine full-vulcanized powdered styrene-butadiene rubber on NR tread rubber was investigated.The results of physical and mechanical properties testing showed that,the complex with 5phr UFPSBR adding into showed the best performance,comparing with the sample unfilled UFPSBR,the tensile strength was 25.36MPa,which was increased by 18.45%,and the wear volume is the smallest,0.1600cm3/1.61km,which is decreased by 33.85%.The influences of UFPSBR on the wet traction,rolling resistance and heat built-up of the five different tread systems were investigated by the compression heat built-up test with constant load and DMA,the results showed that,after adding UFPSBR,the dynamics mechanical properties of different tread were all improved,while the negative impact of rolling resistance and heat performance were minor.