【摘要】 采用溶液聚合法制备了煅烧高岭土/PAA-AM高吸水保水复合材料,使用SEM观察了复合材料的表面形貌,讨论了各种因素对复合材料的吸水和保水性能的影响。结果表明:通过复合,煅烧高岭土粉体颗粒以片状形态均匀分散于PAA-AM基体中,当丙烯酰胺用量为15%,引发剂用量为0.25%,交联剂用量为0.08%,中和度为80%,煅烧高岭土添加量为60%时,复合材料吸蒸馏水倍率达646g/g,常温放置15d和50℃放置6h后的保水率分别为61.5%和87.1%,较添加矿物前均有提高。更多还原

【Abstract】 Calcined kaolin/PAA-AM super absorbent composite was prepared by solution polymerization method.SEM was adopted to characterize the morphology of the as-prepared composite.The influences of each factors on water-absorbing and water-holding performance were discussed.Experimental results show that calcined kaolin is dispersed homogeneously as flaky grains in polymer,and when the content of acryl amide,initiator,cross linker and calcined kaolin is 15%,0.25%,0.08%,and 60% of the quality of monomer respectively,under extent of neutralization is 80%,the distilled water absorbency of the composite is 646g/g and the retention rate is 61.5% after stay for 15d in room temperature,and 87.1% after stay for 6h in 50℃,which are both improved than that not adding calcined kaolin.更多还原