| 1，4-双（2，3-环氧丙氧基）丁烷端基极性改性溶聚丁苯橡胶的制备及性能研究 |
| Preparation and Properties of 1，4-bis（2，3-epoxypropoxy）Butane Terminal Group Polar Modified SSBR |
| 投稿时间：2022-03-04 修订日期：2022-03-04 |
| DOI：10.12136/j.issn.1000-890X.2022.11.0835 |
| 中文关键词: 溶聚丁苯橡胶 1，4-双（2，3-环氧丙氧基）丁烷 端基改性 结构控制 抗湿滑性能 滚动阻力 |
| 英文关键词: SSBR 1,4-bis（2,3-epoxypropoxy）butane terminal group modification structure control wet skid resistance rolling resistance |
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| 中文摘要: |
| 以正丁基锂为引发剂、环己烷为溶剂，采用醚类结构调节剂，以阴离子聚合法制备溶聚丁苯橡胶（SSBR），然后用1，4-双（2，3-环氧丙氧基）丁烷封端极性改性SSBR，考察SSBR的优化合成条件和优化改性条件。结果表明：当单体苯乙烯/丁二烯质量比为25/75、单体质量分数为9.3%、每千克溶剂中四氢呋喃用量为300 mg和醚类结构调节剂用量为135 mg、反应温度为60～65 ℃时，制得适用于轮胎胎面胶的分子中1，2-丁二烯结构质量分数为62%～67%的SSBR；1，4-双（2，3-环氧丙氧基）丁烷/正丁基锂物质的量比为0.5/1～0.7/1、改性温度为56.0～65.0 ℃时，SSBR的改性效果较好。1，4-双（2，3-环氧丙氧基）丁烷端基改性SSBR胶料各项性能达到国外同类SSBR胶料水平，与未改性SSBR胶料比，其抗湿滑性能提升，滚动阻力降低。 |
| 英文摘要: |
| 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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