反相悬浮法制备高岭土/聚丙烯酸钠盐超吸水性复合材料的研究  

SYNTHESIS OF SODIUM ACRYLATE/KAOLINE SUPERABSORBENT COMPOSITE USING INVERSE-SUSPEND POLYMERIZATION

作　　者：钟金凤[1] 吴季怀[1] 魏月琳[1] 林建明[1] 

机构地区：[1]华侨大学物理化学研究所,福建泉州362011

出　　处：《矿物学报》2005年第1期55-59,共5页Acta Mineralogica Sinica

基　　金：福建省重大科技项目(2002H002);福建省新材料与器件重大专题(2004HZ01-3)

摘　　要：采用反相悬浮法制备吸水倍率大约为1000的高岭土/聚丙烯酸钠盐超吸水性复合材料,在反应液中添加高岭土与单体进行交联反应,以提高材料的综合性能并降低成本。使用SEM观察了材料的成粒情况,讨论了影响聚高岭土/丙烯酸钠超吸水性复合材料吸水倍率的因素,如高岭土、交联剂、引发剂、分散剂的用量,及油水比和中和度。A novel sodium acrylate/kaolinite superabsorbent composite with water absorbency about 1000 times higher was synthesized by inverse-suspend polymerization reaction between acrylic acid monomer and kaolinite powder.Kaolinite was added in reaction solution and reacted with monomer. Comprehensive absorbility of superabsorbents was enhanced and the production cost of superabsorbents was reduced. The particles formed by inverse-suspension polymerization were investigated by SEM.And we also discussed the influence on the water absorbing of superabsorbent composites, such as kaolinite powder, cross-linker, initiator, neutralization degree,volume ratio of oil over water phase, and stabilizer.

关 键 词：反相悬浮法 高岭土 聚丙烯酸钠盐超吸水性复合材料 交联反应 成粒情况 吸水性能 

分 类 号：P619.232[天文地球—矿床学] TB332[天文地球—地质学]