交联聚合物微球分散体系流变性影响因素研究  

Study on the rheological property influence factor of polymer micro-gel dispersion system

作　　者：崔波[1] 罗伟[1] 

机构地区：[1]中国石油大学(北京)提高采收率研究中心,北京102249

出　　处：《应用化工》2009年第5期635-639,共5页Applied Chemical Industry

基　　金：中国石油大学重质油国家重点实验室开放基金资助项目(200409)

摘　　要：采用稳态流变性测定方法,对不同条件下(溶胀时间、溶胀温度、交联聚合物浓度、NaCl浓度)的交联聚合物微球分散体系的流变性进行了研究。结果表明,随着溶胀时间的增加,交联聚合物微球分散体系表现出明显的胀流性,溶胀时间较长时,分散体系的胀流性减弱。溶胀温度较高时,交联聚合物微球分散体系在较短溶胀时间内即表现出较明显的胀流性。微球浓度增加,分散体系的胀流性先增强后减弱,直至表现出剪切变稀的假塑性流体特征。随着NaCl浓度的增加,交联聚合物微球分散体系表现出的胀流性先增强后减弱。The steady rheometry was used to study the rheological properties of polymer micro-gel dispersion systems under different conditions （the dilatation time, dilatation temperature, concentration of microball and NaCl ）. The result showed that with the increase of dilatation time, micro-ball systems show obvious dilatant flow property firstly, and then weak dilatant flow property;the polymer micro-gel dispersion systems show obvious dilatant flow property in a short dilatation time at high temperature;with the increase of the concentration of micro-ball, dilatant flow property the dispersion systems show firstly increase and then decrease, the dispersion systems show pscudoplasticity at last ; with the increase of the concentration of NaCl, dilatant flow property the polymer micro-gel dispersion systems show firstly increase and then decrease.

关 键 词：交联聚合物溶液 聚合物微球 流变性 假塑性 胀流性 

分 类 号：O648.2[理学—物理化学]