| 摘要: |
| 用奥氏毛细管粘度计、落球粘度计和HAAKE RS150型流变仪分别测定了高相对分子质量、低浓度的部分水解 聚丙烯酰胺(HPAM)与柠檬酸铝(AlCit)交联体系在交联反应过程中的粘度值,研究了在不同反应时间下HPAM-A1-Cit交联体系的粘度与剪切速率的关系。结果表明,在低剪切速率时，HPAM-AlCit交联体系的粘度随反应时间增加 呈下降趋势;在剪切速率较高时交联体系具有剪切稠化现象;HPAM与AlCit发生分子内交联反应形成交联聚合物 线团在水中的分散体系，这是交联体系粘度随反应时间增加而降低和剪切变稠的主要原因。 |
| 关键词: 部分水解聚丙烯酰胺 柠橡酸铝 交联聚合物溶液 粘度 |
| DOI： |
| 分类号: |
| 基金项目:石油大学重质油加工国家重点实验室开放基金(200013)资助 |
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| Measurement of rheological properties of linked polymer solution by different viscometers |
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LIN Mei-qin, SONG Jin-hong, SUN Ai-jun, LI Ming-yuan, WU Zhao-liang
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(Enhanced Oil Recovery Research Center in China University of Petroleum, Beijing 102249, China)
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| Abstract: |
| The viscosity of solution in the reactive process of low concentration and high molecular weight partially hydrolyzed polyacrylamide(HPAM) and aluminum citrate(AlCit) cross-linking system were determined by Ostwald capillary viscometer, dynamic viscometer and HAAKE RSI50 rheometer. The relationship between viscosity of HPAM/AlCit crosslinking system and shear rate was investigated for different reaction time. The experimental results show that the viscosity of HPAM/AlCit cross-linking system decreases with reaction time in lower shear rate and the system represents shear-thickening property after period of reaction time in higher shear rate. The linked polymer solution is formed by intra-molecular. cross-linking of HPAM and AlCit forming linked polymer coil(LPC) in lower concentration of the system, which is the r^- |
| Key words: partially hydrolyzed polyacrylamide aluminum citrate linked polymer solution viscosity |
