石油化工2016，Vol.45Issue(7)：851-855,5.DOI:10.3969/j.issn.1000-8144.2016.07.014
AMPS共聚物降失水剂分子的构型与性能
Molecular structure and performance of AMPS copolymers as filtrate reducers
摘要
Abstract
Branched and linear 2-acrylamido-2-methyl-propane sulfonic acid(AMPS) copolymers, namely BP and LP,as filtrate reducers were synthesized by radical copolymerization of AMPS, acrylamide(AM) and N,N-dimethyl acrylamide(DMAM) in aqueous solution with different initiators. The structures of the copolymers and the performances of cement slurry with the copolymers were investigated by means of FTIR,TGA,GPC,rheometer,and filtration instrument. The results showed that BP and LP had similar chemical composition,molecular weight and molecular weight distribution. However,the thermo-stability of BP was slightly higher than that of LP. Meanwhile, both the viscosity of BP aqueous solution and the viscosity retention of the cement slurry at high temperature were higher. It was indicated that the fluid loss of the cement slurry decreased with increase of the dosage of the copolymers. As temperature rose,the viscosity of the cement slurry containing LP decreased significantly,whereas the consistency retention of the cement slurry with BP was kept at 65.2%of the initial value in the later stage of thickening experiment,which indicated better performance at high temperature. Adding BP or LP into the cement slurry can improve its stability.关键词
2-丙烯酰胺基-2-甲基丙磺酸共聚物/降失水剂/分子构型/黏度保留率Key words
2-acrylamido-2-methyl-propane sulfonic acid copolymers/filtrate reducer/molecular struction/viscosity retention分类
化学化工引用本文复制引用
雒春辉..AMPS共聚物降失水剂分子的构型与性能[J].石油化工,2016,45(7):851-855,5.基金项目
国家自然科学基金（21464001）；中国科学院2014年西部之光人才培养计划；宁夏自然科学基金（NZ14105）；北方民族大学基金（2014XYZ01）。 （）
