新型高吸油树脂的制备

Prepartion of new high-oil-absorbing resin

以丙烯酸正丁酯(BA)和甲基丙烯酸甲酯(MMA)为单体,采用改进的悬浮聚合法合成高吸油树脂。考察了单体配比、引发剂和交联剂用量、AIBN加入量及加入时间对树脂吸油性能的影响。结果表明,最佳合成条件为:单体配比BA∶MMA质量比为4∶1,引发剂BPO用量为单体质量的0.4%,交联剂N,N’-亚甲基双丙烯酰胺为单体质量的0.15%,发泡剂偶氮二异丁腈(AIBN)为单体质量的18%,在此条件下合成的树脂对甲苯的吸油率最高可达40.17 g/g,速率也明显提高。

Using an improved suspension polymerization, a high oil-absorbing resin was synthesized by n-butyl acrylate （BA） and methyl methacrylate （MMA）. The ratio of monomers, the amounts of initiator and cross-linking agent, the dose and adding time of AIBN were all evaluated. The results showed that the best reaction condition was as follows：the ratio of BA： MMA was 4： 1, the amount of BPO,N,N＇-methyl- ene diacrylamide and AIBN was O. 4% ,0.15% and 18% of all monomers masses respectively. Under this conditions, the oil absorption property of improved resin was up to 40.17 g/g, the oil absorption rate has also improved markedly.