以N,N'-亚甲基双丙烯酰胺为交联剂,过硫酸钾为引发剂,丙烯酸和丙烯酰胺为单体,采用新型溶液聚合法制备了聚(丙烯酸盐共聚丙烯酰胺)/膨胀蛭石高吸水性复合材料.考察了交联剂用量、引发剂用量、单体浓度、中和度、反应温度、膨胀蛭石含量及单体质量比对吸水倍率的影响,试验结果表明:当膨胀蛭石含量为20 wt%时,交联剂用量为0.04 wt%,引发剂为1.3 wt%,中和度为80%,单体浓度为50 wt%,反应温度为80℃,吸水倍率与吸收0.9wt%的NaCl溶液倍率分别为1262 g/g和92 g/g.探讨了添加矿物提高其耐盐性的机理.
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