文章摘要
Preparation and Properties of 1，4-bis（2，3-epoxypropoxy）Butane Terminal Group Polar Modified SSBR
Received:March 04, 2022  Revised:March 04, 2022
DOI：10.12136/j.issn.1000-890X.2022.11.0835
Key Words: SSBR；1，4-bis（2，3-epoxypropoxy）butane；terminal group modification；structure control；wet skid resistance；rolling resistance
Author NameAffiliationE-mail
HE Dian* Sinopec Baling Petrochemical Co.，Ltd，Rubber Department hed.blsh@sinopec.com 
CHEN Yijiao Sinopec Baling Petrochemical Co.，Ltd，Rubber Department  
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Abstract:
      Solution polymerized styrene butadiene rubber （SSBR） was prepared by anionic polymerization with n-butyl lithium as initiator and cyclohexane as solvent and using ether structural regulator，and then the SSBR was end-capped by 1，4-bis（2，3-epoxypropoxy）butane. The optimal synthesis conditions and modification conditions of SSBR were investigated. The results showed that when the mass ratio of styrene/butadiene monomer was 25/75，the mass fraction of monomer was 9.3%，the amount of tetrahydrofuran in each kilogram of solvent was 300 mg，the amount of ether structural modifier was 135 mg， and the reaction temperature was 60～65 ℃，SSBR with 1，2-butadiene mass fraction of 62%～67% in the molecule suitable for tire tread was prepared. When the mole ratio of 1，4-bis（2，3-epoxypropoxy）butane/ n-butyl lithium was 0.5/1 ～ 0.7/1 and the modification temperature was 56.0 ～ 65.0 ℃，the modification effect of SSBR was better. The properties of 1，4-bis（2，3-epoxypropoxy）butane terminal group modified SSBR compound reached the level of similar foreign SSBR compound. Compared with the unmodified SSBR compound，its wet skid resistance was improved and rolling resistance was reduced.
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