物理化学学报 >> 2006, Vol. 22 >> Issue (05): 631-634.doi: 10.3866/PKU.WHXB20060522

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Al3+交联聚合物分子构型及其影响因素

卢祥国;王伟   

  1. 大庆石油学院,提高油气采收率教育部重点实验室,黑龙江 大庆 163318
  • 收稿日期:2005-11-01 修回日期:2005-12-22 发布日期:2006-04-28
  • 通讯作者: 卢祥国 E-mail:Luxiangg2004@163.com

The Molecular Configuration and Its Influential Factors of Al3+ Cross-linked Polyacrylamide Gel

LU Xiang-Guo;WANG Wei   

  1. Key Laboratory of Enhanced Oil and Gas Recovery of Education Ministry, Daqing Petroleum Institute,Daqing 163318, P. R. China
  • Received:2005-11-01 Revised:2005-12-22 Published:2006-04-28
  • Contact: LU, Xiang-Guo E-mail:Luxiangg2004@163.com

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摘要： 通过改变溶剂水中Na+、Ca2+、Mg2+的组成和聚合物浓度, 对发生“分子内”交联反应凝胶体系的化学组成进行了研究, 并对其渗流特性和微观形态进行实验研究和机理分析.研究结果表明,“分子内”交联聚合物黏度随时间变化不大,但阻力系数和残余阻力系数明显大于具有相同黏度聚合物溶液, 且残余阻力系数大于阻力系数.Na+、Ca2+、Mg2+和聚合物浓度将影响交联聚合物分子构型, 其中Ca2+/Mg2+的影响程度较大.

关键词: Al3+交联聚合物, 分子构型, 影响因素, 渗流特性, 双电层理论

Abstract: The chemical composition, percolation performace, and microscopic configuration of“intramolecular cross鄄linked”gel systems were investigated by changing the contents of Na+, Ca2+, Mg2+ ions and polymer concentration in water solvent. The results show that the viscosity of“intramolecular cross-linked”polymer solution changes not too much with time, but the resistance factor and residual resistance factor are obviously larger than those of the ordinary polymer solution with the same viscosity, and the residual resistance factor is larger than the resistance factor. The contents of Na+, Ca2+ and Mg2+ ions and polymer concentrations will affect the molecular configuration of the cross-linked polymer, in which the effect of Ca2+ and Mg2+ is the largest.

Key words: Al3+ cross-linked polyacrylamide gel, Molecular configuration, Influential factors, Percolation performance, Stern-Grahame double layer model