摘要：
The super strength water absorbent based bentonite and poly (methylacrylic acid) composite was prepared with N′N-methylenebisacrylamide used as the crosslinker, ammonium persulfate as the initiator by solution polymerization, characterized by FTIR.And the effects of the dosage of bentonite, the neutralization degree of monomer, the dosage of cross-linker etc.on water absorption and compress strength were investigated.The results showed that the absorbency was 382 g/g for distill water, 216 g/g for tap water, 76 g/g for 0.9％ (wt) of Na2 SO4, the compressive strength was 16.73 MPa of composite when the concentration of NaOH was 2 moL/L, the neutralization degree of monomer was 80％, the dosage of crosslinker was 0.75％ of monomer.%以膨润土和甲基丙烯酸为原料, N′N-亚甲基双丙烯酰胺为交联剂, 过硫酸铵为引发剂, 采用溶液聚合法制备了膨润土复合甲基丙烯酸聚合物高强度吸水剂, 通过红外光谱对其结构进行了表征.研究了吸水剂中膨润土加入量、单体中和度、交联剂用量等对吸水性和强度的影响, 并测试了吸水剂的吸水性能和压缩强度.结果表明, 当膨润土用量为10％, 氢氧化钠浓度为2mol/L, 单体中和度为80％, 交联剂用量为0.75％时, 制备的吸水剂在室温下对蒸馏水吸水倍率达382g/g, 对自来水吸水倍率可达216g/g;地0.9％的Na2SO4溶液中吸水倍率为76g/g, 压缩强度为16.73MPa, 说明制备的吸水剂具有较好的强度和吸水性能.
