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以二乙烯苯为交联剂,过硫酸钾和亚硫酸钠为引发剂,采用水溶液聚合法合成对苯乙烯磺酸钠/2-丙烯酰胺基-2-甲基丙磺酸/膨润土(SSS/AMPS/膨润土)吸水树脂。对制备条件进行优化,采用FT-IR对树脂结构进行表征,TG曲线表征树脂的热稳定性。结果表明:当AMPS质量分数为50%、交联剂用量为0.8%、引发剂用量为0.6%、膨润土用量为10%,反应温度为65℃时,在25%模拟水溶液中树脂的吸水倍率可以达到14.71g/g,强度最佳。树脂的耐热性能好,SEM图表明树脂表面呈现多孔状结构。
The synthesis of sodium p-styrenesulfonate / 2-acrylamido-2-methylpropanesulfonic acid / bentonite by the solution polymerization with divinylbenzene as crosslinking agent and potassium persulfate and sodium sulfite as initiator, Bentonite) water absorbent resin. The preparation conditions were optimized, the structure of the resin was characterized by FT-IR, and the TG curve was used to characterize the thermal stability of the resin. The results showed that when the content of AMPS was 50%, the amount of crosslinking agent was 0.8%, the amount of initiator was 0.6%, the amount of bentonite was 10% and the reaction temperature was 65 ℃, the water absorption capacity of resin in 25% Reached 14.71g / g, the best strength. The heat resistance of the resin is good, the SEM image shows that the resin surface presents a porous structure.