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十二烷基硫酸钠-长链醇体系泡沫性能与表面参数关系研究
蒋平,郑玉飞,陈文征,葛际江,张贵才,胡晓东
0
(中国石油大学石油工程学院,山东青岛 266580;中海油服务股份有限公司,天津 300457;中国石油技术开发公司,北京 100028)
摘要:
使用德国KRSS公司生产的DSA100界面扩张流变仪,采用小幅周期振荡法在室温下考察十二烷基硫酸钠(SDS)和十二烷基硫酸钠/长链醇体系的泡沫性能(起泡性和稳定性)与表面参数(表面张力和表面扩张流变性)之间的关系。结果表明:向SDS溶液中分别加入十二醇、十四醇、十六醇和十八醇,体系的起泡体积和析液半衰期会随着醇的链长的增加先增大后减小,表面张力会先减小后增大,而体系的扩张模量、弹性模量和表面黏度都会先增大后减小;体系的起泡性由表面张力和表面黏弹性共同决定;体系的析液半衰期随着扩张模量、弹性模量和黏性模量增大而增大,并且析液半衰期与弹性模量具有较为明显的线性关系。
关键词:  小幅周期振荡法  泡沫性能  表面张力  扩张模量  弹性模量  表面黏度
DOI:10.3969/j.issn.1673-5005.2014.01.022
投稿时间:2013-08-11
基金项目:国家高技术研究发展专项 (2006AA06Z227);国家自然科学基金项目(51104170);山东省自然科学基金项目(ZR2011EEQ001);中央高校基本科研业务费专项(13CX02047A);山东省自然科学基金项目(Y2006F50);新世纪优秀人才支持计划(NECT-07-0846)
Investigation of relationship between foam performance and surface dilatational rheology of sodium dodecyl sulfate/alcohol system
JIANG Ping,ZHENG Yu-fei,CHEN Wen-zheng,GE Ji-jiang,ZHANG Gui-cai,HU Xiao-dong
(College of Petroleum Engineering in China University of Petroleum,Qingdao 266580, China;China Oilfield Services Limited, Tianjin 300457, China;China Petroleum Technology & Development Corporation, Beijing 100028, China)
Abstract:
The relationship between foam performance(foamability and stability) of sodium dodecyl sulfate (SDS) and sodium dodecyl sulfate/long chain alcohol systems and surface parameters (surface tension and surface dilatational rheology) was investigated using small periodic oscillation method at room temperature by DSA100interfacial dilatational rheometer. The results show that foaming volume and drainage half-life of the systems firstly increase and then decrease with addition of laurylalcohol, myristyl alcohol, cetyl alcohol and stearyl alcohol. Surface tension of the systems firstly decreases and then increases, while dilational modulus, elastic modulus and surface viscosity of the systems firstly increase and then decrease. In addition, the foamability of the systems is determined by surface tension and surface viscoelasticity. Drainage half-life increases with the increase of the dilational modulus, elastic modulus and viscous modulus of the systems while it has a particularly obvious linear relationship with the elastic modulus.
Key words:  small periodic oscillation method  foam performance  surface tension  dilational modulus  elastic modulus  surface viscosity
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