【摘要】 以钼系化合物为主催化剂,有机铝为助催化剂,烯丙基溴为分子量调节剂,加氢汽油为溶剂,在30 L连续聚合装置上进行了 1,2-聚丁二烯橡胶合成试验。首釜聚台温度 60—80℃,2^#、3^# 釜聚合温度70—80℃。胶液用热水凝聚,湿胶经螺杆挤压机脱水干燥。所得产品性能为:[η]=2.08—2.77dL/g,ML₁₊₄100℃=57—69,分子量分散指数1.3—2.2,1,2-链节含量为 81.4—90％。聚合经 1 500 h连续运转,无挂胶和凝胶。同时对产品的充油及其与 BR、NR共混进行了试验。更多还原

【Abstract】 By using molybdenum compounds as catalyst, organic aluminum compounds as cocatalyst, allyl bromide as additive, hydrogenated gasoline as solvent, the enlarged test of butadiene polymerization into 1,2-polybuta-diene rubber is carried out on a continuous pilot plant which is consisted of four 30L reactors. The temperature in the first reactor is 60-80℃ and those in the second and third reactors are 70-80℃. The polymer is coagulated by hot water, and the rubber obtained is dewatered and dried by using a screw extruder. The properties of 1,2-polybutadiene rubber are as follows:[η]= 2.08-2.77 dL/g,ML1+4100℃ = 57-69,Mw/Mn= 1.3-2.2, 1,2-unit content = 81.4-90%.The test run has been carried out continuously for 1 500 hours,without any gel formation. The 1,2-polybutadiene rubber obtained has also been extended with oil, and blended with BR or NR.更多还原