【摘要】 以甲基丙烯酸丁酯(BMA)、甲基丙烯酸异辛酯(2-EHM)和苯乙烯(St)为原料,以过氧化苯甲酰(BPO)为引发剂,聚乙烯醇(PVA)为分散剂,二乙烯基苯(DVB)为交联剂,应用悬浮聚合法合成了P(BMA/2-EHM/St)高吸油树脂.研究了聚合温度、单体配比、引发剂用量、交联剂用量和分散剂用量对树脂吸油倍率的影响,并采用傅里叶红外光谱和热重分析对其进行结构表征及热性能分析.结果表明:当w(St)=60%、m(2-EHM)∶m(BMA)=1∶1、w(BPO)=1.7%、w(DVB)=0.5%、w(PVA)=3%,聚合温度86℃,反应时间为6 h时,所制得的高吸油树脂吸油倍率最大,对四氯化碳、二氯甲烷、甲苯和二甲苯的吸油倍率分别达到28.26 g·g-1、21.10g·g-1、14.92 g·g-1、13.28 g·g-1.,所得产物为BMA/2-EHM/St三元共聚物,其热稳定性良好,能满足一般使用要求.更多还原

【Abstract】 The suspension polymerization of styrene(St) and metharylate esters(butyl methacrylate(BMA) and 2-ethylhexyl methacrylate(2-EHM)) was carried out to prepare tribasic copolymerized oil absorbent resins.The influences of temperature,feed ratio of monomers,initiators,crosslink agents and dispersants on oil-absorptive properties of high oil absorbent resins were studied,meanwhile,the structure and performance of oil absorbent resins were analyzed by FTIR and TGA. And the result shows: at 86 ℃,reaction time is 6 h,60 wt% styrene(St),m(BMA) : m(2-EHM) = 1 ∶ 1,1.7 wt%Benzoperoxide(BPO) initiator,0.5 wt% divinylbenzene(DVB) crosslinker and 3 wt% polyvinyl alcohol(PVA) as dispersant agent. The maximum oil absorbency to carbon tetrachloride,dichloromethane,toluene and xylene were 28.26,21.10,14.92 and 13.28 g·g-1,and the product is the tribasic copolymerized oil absorbent resins. It also has good thermal stability to meet the general requirements.更多还原