表活剂类型对旋转滴界面张力测定的影响研究  

Study of Influence of the surfactant type on the measurement of spinning drop interfacial tension

作　　者：张洁[1] 杨长春[1] 汤颖[1] 赵景瑞 

机构地区：[1]西安石油大学化学化工学院,陕西西安710065 [2]陕西海安实业有限责任公司,陕西西安710065

出　　处：《石油化工应用》2012年第6期58-60,72,共4页Petrochemical Industry Application

基　　金：国家自然科学基金项目(50874092);陕西省教育厅科研计划项目(11JK0560)

摘　　要：使用旋转滴界面张力测定仪对长2原油、甲苯、正己烷、环己烷与不同浓度的两种类型的表面活性剂十二炕基硫酸钠（SLS）和十四烷基三甲基溴化铵（TTAB）体系的界面张力进行了测定。讨论了仪器的平衡时间、转速、工作温度等因素对界面张力测量值的影响。同时分析了不同油相对界面张力的影响。结果表明：各体系平衡时间选择在20～30min之间时界面张力测定值准确度较高；在满足L／D≥4的测定要求后继续增大转速会使测量值偏大；仪器工作温度的提高则导致界面张力测定值逐渐减小。The interfacial tension of the crude oil, aromatic, alkanes, cyclohexane with different concentrations of SLS, TTAB were studied by using rotating low interfacial tension tester. Balanced time, speed, working temperature have impact on interfacial tension. The influence of various oil phases to the interfacial tension has also been discussed. The results showed that： The stable interfacial tension can be obtained after 20 min and increase rotation speed beyond the L/D limitation lead to deviation of interfacial tension to a higher value; on con- trary, increasing instrument temperature causes the interfacial tension decrease.

关 键 词：表面活性剂 浓度 平衡时间 转速 温度 界面张力 

分 类 号：O647.2[理学—物理化学]