疏水缔合聚合物粘弹性研究  

Research on viscoelasticity property of hydro water associative polyacrylamide.

作　　者：薛新生[1] 郭拥军[1] 牛双会 郭广吉[3] 张新民[1] 

机构地区：[1]西南石油学院研究生院 [2]中石化集团管道储运公司聊城输油处 [3]天津石油职业技术学院

出　　处：《钻井液与完井液》2005年第3期50-52,56,共4页Drilling Fluid & Completion Fluid

基　　金：国家自然科学基金项目"热增粘和盐增粘水溶性聚合物分子结构与性能关系研究"(29974002)部分研究内容。

摘　　要：研究了不同分子量和带不同数量疏水基团的疏水改性聚丙烯酰胺(HMPAM)的粘弹性,并对分子量大小和疏水基团数量对聚合物粘弹性的影响进行了分析。通过研究发现角频率在1Hz时,缔合聚合物的疏水基团比例越高,缔合聚合物溶液的弹性越大;分子量越大,缔合聚合物形成超分子结构的强度就越大。提出利用弹性模量G’和耗能模量G”比值法评价聚合物溶液的粘弹性。结果表明,在低角频率时疏水基团数量对聚合物溶液的弹性影响较大,在高角频率时分子量对聚合物溶液的弹性影响较大,中间存在一个过渡区,在过渡区内聚合物溶液弹性的大小取决于疏水基团数量和分子量的综合作用。This paper studies the viscoelasticity property of hydro water associative polyacrylamide with different hydro water associative group number and different molecular weight. It was proved that the more hydro water associative group in the chain, the more viscoelasticity is; and the more molecule weight, the more associated structure strength, when the frequency is 1 Hz. Make use of the specific value(G/ G') of the storage modulus and loss modulus,the polymer aqua viscoelasiticity was studied, and it was found that the viscoelasticity of polymer solution was influenced by hydro water associative group amount when in low angle frequency, and it was affected by molecule weight when in high angle frequency, and there is a transition area between low frequency and high frequency. The viscoelasticity of polymer solution was influenced by both hydro water associative group amount and molecule weight in the transition area.

关 键 词：疏水缔合聚合物 分子结构 分子量 弹性模量 耗能模量 弹性 粘弹性 

分 类 号：TE342[石油与天然气工程—油气田开发工程]