二元共聚高吸油树脂的合成工艺

Studies on the synthesis of high oil-absorbing resin by copolymerization

以甲基丙烯酸丁酯及苯乙烯为主要单体、丙二醇二丙烯酸酯为交联剂、偶氮二异丁腈为引发剂,采用悬浮聚合方法,合成一种白色颗粒状的共聚型高吸油树脂。考察了搅拌速率、分散剂浓度、聚合温度、单体配比、交联剂用量等因素对颗粒特性的影响。研究结果表明,当共聚单体配比(质量比)为1.6∶1、分散剂水溶液浓度为0.1%～0.2%、交联剂用量为单体质量的1%、搅拌转速200～300 r/min、聚合温度70℃、聚合时间为6h时,合成出的树脂粒径适中,吸油倍率达到20倍。

Using butyl methacrylates, styrene as monomers, propylene glycol diacrylate as crosslinking agent, AIBN as initiator, the high oil-absorbing resin was synthesized by suspension polymerization. The influences of stirring rate, the amount of dispersant, polymerization temperature, the ratio of monomers, the amount of crosslinking agent on the particle size of the resin were investigated. The optimum conditions were as follows： the ratio of monomers 1.6 ： 1; the amount of dispersant 0.1%-0.2%; the amount of crosslinking agent 1%; stirring rate 200-300 r/min; polymerization temperature 70℃; reaction time 6h; the particle diameter of the resin was moderate. The oil-absorbing ability of the resin was more than 20（g/g）.