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采用水溶液聚合法,以丙烯酸(AA)、丙烯酰胺(AM)、乙酸乙烯酯(VAc)为单体,有机膨润土(OMMT)为复合微粒,反应得到了P(AA-AM-VAc)/OMMT复合高吸水性树脂。通过单因素实验考察了聚合温度、单体组成、引发剂用量、交联剂用量、丙烯酸中和度、有机膨润土掺入量对复合树脂吸液率的影响,获得了最佳工艺条件。结果表明,在最佳工艺条件下制备的复合高吸水性树脂对纯净水和w(NaC l)=0.9%水溶液的吸收倍率分别为695 g/g和113 g/g。
(AA-AM-VAc) / OMMT composite was synthesized by aqueous solution polymerization using acrylic acid (AA), acrylamide (AM) and vinyl acetate (VAc) as monomers and organic bentonite (OMMT) High water-absorbent resin. The effects of polymerization temperature, monomer composition, initiator dosage, crosslinking agent dosage, neutralization degree of acrylic acid and organic bentonite content on the liquid absorption rate of composite resin were investigated by single factor experiment. The optimum technological conditions were obtained. The results showed that the absorbency of composite superabsorbent resin prepared under the optimal conditions was 695 g / g and 113 g / g for pure water and NaC 1 = 0.9% aqueous solution, respectively.