| 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 Name | Affiliation | E-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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