引用本文:康万利,路遥,李哲,杨红斌,何羽薇,左金,等. 部分水解聚丙烯酰胺的微流变特性研究[J]. 石油与天然气化工, 2015, 44(4): 75-78.
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部分水解聚丙烯酰胺的微流变特性研究
康万利1,路遥1,李哲1,杨红斌1,何羽薇2,左金1,廖书宇1
1.中国石油大学(北京)提高采收率研究院;2.北京朗迪森科技有限公司
摘要:
以动态光散射原理为基础,借助Rheolaser微流变仪,针对NaCl浓度、pH值、温度以及相对分子质量等影响因素,研究了部分水解聚丙烯酰胺(HPAM)的微观流变特性。通过分析HPAM的均方位移(MSD)曲线,得到反映其流变特性的黏弹性参数,宏观黏度因子MVI和弹性因子EI。实验结果表明,NaCl浓度越低,温度越低,pH值越高,相对分子质量越高,则HPAM溶液的MVI与EI的平衡值越高。阐述了聚合物溶液具有这种流变特性的微观机理,探讨了微流变学在研究聚合物流变特性上的优越性。 
关键词:  微流变  动态光散射  部分水解聚丙烯酰胺  均方位移  黏弹性参数 
DOI：10.3969/j.issn.1007-3426.2015.04.015
分类号:TE357.46
基金项目:国家自然科学基金资助项目“两亲聚合物溶液聚集体调控用于增强乳化的方法及机理研究”(21273286)。
Study on the microrheological characteristics of partially hydrolyzed polyacrylamide
Kang Wanli1, Lu Yao1, Li Zhe1, Yang Hongbin1, He Yuwei2, Zuo Jin1, Liao Shuyu1
(1. Research Institute of Enhanced Oil Recovery, China University of Petroleum(Beijing), Beijing 102249, China;2. LDS Technology Limited, Beijing 100101, China)
Abstract:
Based on the dynamic light scattering principle, the microrheological characteristics of partially hydrolyzed polyacrylamide influenced by concentration of NaCl, pH value, temperature and molecular weight were studied by Rheolaser. The mean square displacement (MSD) curve of HPAM was analyzed to obtain viscoelastic parameters such as macroscopical viscosity index (MVI) and elasticity index (EI). The results showed that with the decrease of temperature and concentration of NaCl and the increase of pH value and molecular weight, the value of MVI and EI of HPAM increased. The microcosmic mechanism of the results was explained and the superiority of microrheology on the research of polymer rheological characteristics was discussed.
Key words:  microrheology  dynamic light scattering  partially hydrolyzed polyacrylamide  mean square displacement  viscoelastic parameters