The application of liquid 1,4-polybutadiene(LPB)in styrene butadiene rubber(SBR)compounds was studied.The results showed that the microstructure of LPB mainly consisted of cis-1,4-structure and trans-1,4-structure.Using LPB as a plasticizer to replace environmentally friendly aromatic oil(TDAE),the t10 and t90 of the compound were extended,the wear resistance of the vulcanizate increased,and the rolling resistance decreased,but at the same time,the wet slip resistance was reduced.Replacing TDAE with an equal amount of LPB resulted in a decrease in the tensile properties of the vulcanizate,while partially replacing TDAE with LPB resulted in an improvement in the tensile properties of the vulcanizate.
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