α-烯烃高分子减阻剂的质量浓度对减阻效果的影响  

Influence of α-olefin polymer drag reduction agent concentration on the efficiency of drag reduction

作　　者：管民[1] 刘辉[1] 宋高杰[1] 

机构地区：[1]新疆大学化学化工学院,新疆乌鲁木齐830046

出　　处：《重庆大学学报（自然科学版）》2009年第2期239-242,共4页Journal of Chongqing University

基　　金：新疆自治区高技术研究发展计划资助项目(200416117)

摘　　要：采用溶液聚合法合成的α-烯烃高分子减阻剂,用环道装置测定减阻率,实验结果表明:当减阻剂质量浓度达到5 mg/L后,开始产生减阻效果,减阻率随浓度的增大而提高,并逐渐趋于恒定值。随剪切次数的增加,减阻剂的减阻率迅速下降;用粘度法分析高分子特性对减阻效果的影响,即用粘度法测定了高分子减阻剂的特性粘数、等效球的密度和胶粒浓度。特性粘数小,等效球的密度大,胶粒浓度小,分子量大,减阻效果好;反之则效果差。The effects of an polymerization on the efficiency α-olefin polymer drag reduction agent （DRA） created using solution of drag reduction are studied. The results show that α-olefin polymer DRA begins to reduce drag when the concentration is 5 mg/L. Up to a constant value, the drag reduction percentage of the samples improves as the concentration increases. The drag reduction percentage drops rapidly as shearing times increase. The effects of polymer characteristics on drag reduction efficiency are further studied. Particle density and concentration are obtained through viscosimetry. The results show that with α-olefin polymer DRA, the characteristic viscosity is lower, density is higher, particle concentration is lower, and molecular weight is higher resulting in improved drag reduction efficiency. Other conditions worsen drag reduction efficiency.

关 键 词：高分子减阻剂 抗剪切性 胶粒浓度 Α-烯烃 

分 类 号：O624.6[理学—有机化学]