粘土种类对聚丙烯酸/丙烯酰胺高吸水树脂性能的影响  

The Effect of Clay Kind on Properties of Corresponding Poly(Acrylic Acid/Acrylamide/Clay) Superabsorbents

作　　者：吴紫平[1] 索红莉[1] 张腾[1] 袁慧萍[1] 王毅[1] 刘敏[1] 马磷[1] 

机构地区：[1]北京工业大学材料科学与工程学院,国家教育部功能材料重点实验室,北京100124

出　　处：《高分子材料科学与工程》2012年第6期45-47,52,共4页Polymer Materials Science & Engineering

基　　金：国家863高技术研究发展计划(2009AA032401);北京市自然科学基金资助项目(2092006)

摘　　要：选用含量相同的六种不同粘土(煅烧高岭土、蒙脱土、凹凸棒土、膨润土、海泡石和硅藻土),采用反相悬浮法制备了一系列聚(丙烯酸/丙烯酰胺/粘土)高吸水树脂,并比较了不同粘土对高吸水树脂结构、吸水倍率、吸盐水倍率以及保水性能、热稳定性的影响。通过比较发现,添加膨润土的高吸水树脂具有最高的吸水倍率(450 g/g)和吸盐水倍率(92 g/g);添加膨润土和煅烧高岭土均可提高高吸水树脂的保水性能。此外,煅烧高岭土可以更为有效地提高高吸水树脂的热稳定性。A series of poly（acrylic acid/acrylamide/clay） superabsorbents with 10% different kinds clay,which including calcined kaolin,montmorillonite,attapulgite,bentonite,sepiolite and diatomite,were prepared by inverse suspension polymerization method.The effects of clay kinds on structure,equilibrium water absorbency,equilibrium 0.9% NaCl absorbency,the water-retention capability and thermal stability of the superabsorbent composites were also systematically investigated in the same condition.It is found that the superabsorbent incorporated with bentonite has the best equilibrium water absorbency（450 g/g） and equilibrium 0.9% NaCl absorbency（92 g/g）.Moreover,bentonite and calcined kaolin ones show the best capability of maintenancewater.Besides,the calcined kaolin can enhance the thermal stability of corresponding superabsorbent to the highest degree.

关 键 词：高吸水树脂 粘土 反相悬浮聚合 吸水倍率 保水性能 

分 类 号：TQ314.261[化学工程—高聚物工业]