油包水乳液型聚丙烯酰胺的制备及性能研究

摘要

W/O emulsion polyacrylamide PAM-2 was prepared by inverse emulsion polymerization with 10# engine oil as the oil phase,AM & AMPS as monomers,the effects of emulsifier,initiator and temperature on PAM-2 and its thickening and rheological properties were studied.The results showed that monomer conversion rate reached to 92 ％,molecular weight of the polymer was 8 × 106,when emulsifier,initiator,temperature was 1.2％,2‰,30 ℃.The viscosity to 1％ of the emulsion polymer in water was 0.51 Pa · s,in 50 000 mg/L of mineralized water was 0.18 Pa · s,which own excellent shear stability,reciprocating and viscoelasticity.%以10#机油为油相,丙烯酰胺(AM)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)为单体,通过反相乳液聚合制备了油包水乳液型聚丙烯酰胺PAM-2,研究了乳化剂、引发剂、温度对PAM-2的影响,以及PAM-2的增稠性能和流变性能.结果表明,当乳化剂为1.2％,引发剂为2‰,引发温度为30℃时,单体转化率达到92％,聚合物分子量为8×106.1％该乳液聚合物在清水中黏度为0.51 Pa·s,在50 000 mg/L的矿化水中黏度为0.18 Pa·s,具有优良的剪切稀释性、往复性和粘弹性.