摘要
以丙烯酰胺(AM)和阳离子单体二甲基二烯丙基氯化铵(DMDAAC)为原料,在交联剂N,N'-亚甲基双丙烯酰胺和水溶性偶氮引发剂存在的条件下,采用溶液聚合法合成了阳离子型水凝胶。根据高分子间异性电荷静电相吸的分子复合原理,将阳离子型水凝胶溶液与阴离子型HPAM溶液复配成复合型聚合物。对复合型聚合物的增黏、耐温、热稳定、耐盐和剪切流变性进行了评价。结果表明,阳离子型水凝胶溶液的加入可以提高HPAM溶液的黏度,当阳离子型水凝胶溶液和HPAM溶液质量浓度均为2 000 mg/L、阳离子度为5%、体积比为1∶1时,其增黏效果最好。25℃时,在剪切速率为170 s-1的条件下,黏度由单一HPAM溶液的31.1 mPa·s增加到复合溶液的46.8 mPa·s。研究表明,复合溶液具有良好的耐温、耐盐性能,其热稳定和剪切流变性能都得到了明显的改善。
The cationic hydrogels were synthesized using acrylic amide( AM) and diallyldimethylammonium chloride( DMDAAC)by means of aqueous solution polymerization,in the reaction,and under the presence of of N,N'-methylene bis acrylamide is used as crosslinking agent and water-soluble azo as initiator. According to the interattraction principle between opposite charges,the cationic hydrogel solution is combined with HPAM solution to compound polymers. The tackifying performance,thermal stability,the resistance to temperature and salt,and the rheology of the polymers are evaluated. The results show that the viscosity of HPAM solution can be increased by adding cationic hydrogel solution. When the concentration of the cationic hydrogel solution and HPAM solution is both 2 000 mg / L,the cation degree is 5%,their volume ratio is 1: 1,the viscosity-increasing effect of the cationic hydrogel is the best. And at 25 ℃and the shear rate of 170 s- 1,the viscosity of the compound solution can reach to 46.8 mPa·s( the viscosity of HPAM solution is 31.1mPa·s under the same conditions). The study shows that the synthesized polymers have good resistance to temperature and salt. The thermal stability and the shear rheology of HPAM solution are obviously improved by adding cationic hydrogel solution.
出处
《西安石油大学学报（自然科学版）》
CAS
北大核心
2014年第5期75-79,8,共5页
Journal of Xi’an Shiyou University（Natural Science Edition）
基金
国家科技重大专项项目"高温高盐油田提高采收率技术"(编号:2011ZX05011)
关键词
聚合物增黏剂
性能评价
抗高温性能
抗盐性能
polymer tackifier
performance evaluation
high-temperature resistance
salt resistance
