交联剂和致孔剂对丙烯酸酯系吸油树脂性能的影响

Study on Effect of Crosslinking Agent and Porogenic Agent on Oil-Absorptive Properties of High Oil-Absorption Resins Gained by the Polymerization of Alkyl Methacrylates

以甲基丙烯酸丁酯(BMA)和丙烯酸丁酯(BA)为单体、N,N′-亚甲基双丙烯酰胺为交联剂、过氧化苯甲酰为引发剂、聚乙烯醇为分散剂、水为分散介质,采用悬浮聚合法制备了自溶胀型的吸油树脂,并通过正交实验考察了交联剂、致孔剂对树脂吸油性能的影响。结果表明,当n(BMA)∶n(BA)=1∶2、引发剂用量为0.8%、交联剂用量为1.6%、分散剂用量为5.0%、温度为80℃、反应时间为5 h、水油比为7∶1时,甲苯的吸油率为17.24 g.g-1,致孔剂乙酸乙酯的加入使甲苯的吸油率提高至25.24 g.g-1。

The oil-absorption resins are prepared by suspension copolymerization of monomer butyl methacrylate and butyl acrylate, with N, N＇-methylene bisacrylamide as crosslinking agent, benzoyl peroxide as initiator, polyvinyl alcohol as dispersing agent and water as disperal phase in this paper. The experimental results show that, when the molar ratio of butyl methacrylate to butyl acrylate is 1 ： 2, the amount of the initiator is 0. 8% of the monomer by mass,the amount of the crosslinking agent is 1.6% of the monomer by mass,the amount of the dispersing agent is 5.0% of the monomer by mass,the polymerization temperature is 80℃, the reaction time is 5 h and the ratio of water to oil is 7 ： 1, the synthesized oil-absorption resin has good performance and its oil-absorption rate is 17.24 g · g^-1 for toluene. Furthermore,with the addition of porogenic agent,the oil-absorption rate for toluene can be raised up to 25.24 g · g^-1.