日用化学工业2016，Vol.46Issue(11)：609-614,6.DOI:10.13218/j.cnki.csdc.2016.11.001
铁离子对水解聚丙烯酰胺溶液流变性能影响研究
Research work with respect to effects of iron ion on rheological performance of hydrolytic polyacrylamide solution
摘要
Abstract
Considering the problem that reducing substances cause serious viscosity loss of hydrolytic polyacrylamide (HPAM)solution used as oil displacement agent in crude oil field,the effects of Fe2 + and Fe3 + on the zero shear viscosity,dynamic viscoelasticity and rheological performance under instant extension were qualitatively and quantitatively analyzed with laboratory physical simulation method;then the mechanism for the effect of two kinds of iron ion on the viscosity of HPAM solution was examined. Results showed that the presence of Fe2 + in the solution mainly causes the break of the molecular chain of HPAM via redox reaction and chemical behavior of hydrolysis,which results in significant decline of viscosity and rheological performance of the HPAM solution. Meanwhile,the presence of Fe2 + in the HPAM solution not only causes the elastic modulus and loss modulus both fall sharply;but also reduces the filament diameter of HPAM solution and accelerates the break of the filament. Finally,degree of entanglement between polymer molecules reduces, and the molecules become easy to flow. Effect of Fe3 + on the rheological performance of HPAM solution is rather small,and its main functions are flocculation and precipitation of HPAM.关键词
水解聚丙烯酰胺/黏度/黏弹性/流变性Key words
hydrolytic polyacrylamide/viscosity/viscoelasticity/rheological performance分类
能源科技引用本文复制引用
陈斌,敖文君,陈士佳,朱洪庆,王成胜,吴彬彬,左清泉..铁离子对水解聚丙烯酰胺溶液流变性能影响研究[J].日用化学工业,2016,46(11):609-614,6.基金项目
中国海洋石油总公司科研项目 （）
