| 全饱和氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物的制备及其性能研究 |
| Preparation and Properties of Fully Saturated Hydrogenated Styrene Butadiene Styrene Block Polymer |
| 投稿时间：2025-03-21 修订日期：2025-03-21 |
| DOI：10.12136/j.issn.1000-890X.2025.06.0417 |
| 中文关键词: 氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物 不饱和双键 三氯化铝 亲电取代反应 |
| 英文关键词: SEBS unsaturated double bond aluminum trichloride electrophilic substitution reaction |
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| 中文摘要: |
| 通过借鉴亲电取代反应机理，结合氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物（SEBS）分子结构，加入三氯化铝以消除SEBS分子不饱和双键，研究三氯化铝用量、反应时间及SEBS含量（质量分数）对消除SEBS分子不饱和双键反应的影响，并对饱和SEBS的甲苯溶液粘度和耐低温性能进行测试。结果表明：SEBS分子不饱和双键完全消除的最优反应条件为三氯化铝/SEBS分子双键物质的量比为1.2/1，反应时间为2 h，SEBS含量为10%；全饱和SEBS仍具有很好的流动性和溶解性，有利于极性化改性及相关应用；饱和前后SEBS分子EB段的玻璃化转变温度无明显变化，全饱和SEBS仍保持较好的低温使用性能。 |
| 英文摘要: |
| By drawing on the mechanism of electrophilic substitution reaction and combining with the molecular structure of hydrogenated styrene butadiene styrene block copolymer（SEBS），aluminum trichloride was added to eliminate the unsaturated double bonds in SEBS molecules.The effects of aluminum trichloride amount，reaction time and SEBS content（mass fraction） on eliminating unsaturated double bond reaction in SEBS molecules were investigated，and the toluene solution viscosity and low temperature resistance of the saturated SEBS were tested.The results showed that，the optimal reaction conditions for achieving complete elimination of unsaturated double bonds in SEBS molecules were as follows：the molar ratio of aluminum trichloride/double bonds in SEBS molecules was 1.2/1，the reaction time was 2 h，and the SEBS content was 10%.The fully saturated SEBS still had good fluidity and solubility，which was beneficial for polarity modification and related applications.There was no significant change in the glass transition temperature of the EB segment in SEBS molecules before and after saturation，and the fully saturated SEBS still maintained good low temperature performance. |
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