Application of Different SSBR in Tread Compound of All-steel Radial Tire
The application of four solution polymerized styrene butadiene rubbers(product grade 2466,F2743,F2150A and HPR850)with similar relative molecular weight and glass transition temperature in the tread compound of all-steel radial tire was studied.The results showed that the Mooney viscosity,vulcanization characteristics and filler dispersion of SSBR compounds were basically equivalent.The modulus stress and tensile strength of F2743 vulcanizate were slightly lower,while the room temperature rebound value of 2150A vulcanizate was the maximum.HPR850 vulcanizate with a homogenizer had a smaller rebound value and worse wear resistance.The compatibility of 2466 and natural rubber was the best,the heat build-up of 2466 vulcanizate was the lowest,and the wet-skid resistances of F2743 and HPR850 vulcanizates were better,but the heat build-up significantly increased.
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