高岭土/聚丙烯酸钠超强吸水性复合材料的合成与性能研究

【作者】 夏开胜； 沈上越； 范力仁； 金江；

【机构】 中国地质大学材料科学与化学工程学院；

【摘要】 以高岭土和丙烯酸为原料,采用溶液聚合法合成得到超强吸水性高岭土／聚丙烯酸钠复合材料,讨论了实验中主要因素对其吸水性能的影响。结果表明:交联剂用量0．05％,引发剂用量0．30％,高岭土添加量30％,中和度85％,反应温度65℃,复合材料吸蒸馏水最佳,倍率达407．9g／g;交联剂用量0．05％,引发剂用量0．20％,高岭土添加量40％,中和度80％,反应温度65℃,吸自来水最佳,倍率达230．2g／g;交联剂用量0．05％时,引发剂用量0．20％,高岭土添加量20％,中和度70％,反应温度 65℃,吸生理盐水最佳,倍率达62．3g／g。更多还原

【Abstract】 Kaolin/sodium polyacrylate super absorbent composite was prepared by solution polymerization with kaolin and acrylic acid as principal raw material. The influence of main factors in the experiment was discussed. The results show under the condition of 65℃, when the content of cross linker, initiator, and kaolin is 0.05%, 0.30%, and 30% of the quality of monomer respectively, and extent of neutralization is 85%, the distilled water absorption performance of composite is the best 407.9g/g, when the content of cross linker, initiator, and kaolin is 0.05%, 0.20%, and 40%, and extent of neutralization is 80%, tap water absorption performance is the best 230.2g/g, and when the content of cross linker, initiator, and kaolin is 0.05%, 0.20%, and 20%, and extent of neutralization is 70%, physiological saline absorption performance is the best 62.3g/g.更多还原