论文部分内容阅读
中国石油大学以正丁基锂为引发剂,环己烷/己烷为溶剂,采用间歇聚合工艺模拟溶聚丁苯橡胶(SSBR)聚合过程的凝胶生成实验,考察了1,2-丁二烯的抑凝机理。结果表明,1,2-丁二烯具有明显抑凝作用,加入质量分数为(1～5)×10-5时,产品的凝胶质量分数在0.010%以内;加入质量分数高于5×10-5时,产品的凝胶质量分数低于0.001%;加入质量分数超过1×10-4时,对聚合反应速率和单体转化率有影响。1,2-丁二烯作为
China) The gel formation experiment of poly (styrene-butadiene-styrene-butadiene rubber) (SSBR) polymerization was carried out using n-butyllithium as initiator and cyclohexane / hexane as solvent in a batch polymerization process. Inhibition of alkene mechanism. The results showed that 1,2-butadiene had obvious inhibition effect. When the mass fraction of (1 ~ 5) × 10-5 was added, the gel content of the product was within 0.010%. When the mass fraction was higher than 5 × 10 -5, the gel fraction of the product is less than 0.001%. When the mass fraction exceeds 1 × 10-4, the polymerization rate and the monomer conversion rate are affected. 1,2-butadiene as