水包离子液体微乳液的制备及其缓蚀性能研究  

Preparation of an ionic liquid-in-water microemulsion and study on its corrosion inhibition performance

作　　者：刘帅[1] 李进 陈佳雯 刘若兰 朱元强[1] LIU Shuai;LI Jin;CHEN Jia-wen;LIU Ruo-lan;ZHU Yuan-qiang(College of Chemistry&Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500

出　　处：《现代化工》2024年第S02期285-289,共5页Modern Chemical Industry

基　　金：西南石油大学物理化学“课程思政”示范教学团队项目(X2021KCSZSFTD03)。

摘　　要：针对碳钢易被腐蚀的问题,以离子液体1-己基-3-甲基咪唑二(三氟甲烷磺酰基)酰亚胺(ILs)、壬酸、TX-100、正丁醇、水为原料,利用滴液法制备微乳液缓蚀剂并绘制拟三元相图,同时应用静态挂片失重法考察离子液体质量分数对缓蚀率的影响。结果表明,该微乳液是水包离子液体型微乳液,当1-己基-3-甲基咪唑二(三氟甲烷磺酰基)酰亚胺和壬酸组成的内相质量分数为0.7%时,碳钢片的缓蚀率可达84.25%;其中离子液体与酸质量比为1∶1时缓蚀效果最好,缓蚀率可达86.33%,说明有机酸对微乳液体系缓蚀效果具有促进作用。Aiming at the problem that carbon steel is easy to be corroded,the microemulsion corrosion inhibitor was prepared by dropwise method using ionic liquids 1-hexyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide(ILs),nonanoic acid,TX-100,n-butyl alcohol,and water as the raw materials and the proposed ternary phase diagram was plotted,and at the same time,the static hanging weightlessness method was applied to examine the influence of the proportion of ionic liquids on the corrosion inhibition rate.The microemulsion is a water-in-ionic liquid microemulsion,and the corrosion inhibition rate of carbon steel sheet can reach 84.25%when the mass ratio of the internal phase composed of 1-hexyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide and nonanoic acid is 0.7%;the ratio of the ionic liquid to the acid is 1∶1,the best corrosion inhibition effect is achieved and the inhibition rate is up to 86.33%,which shows that the organic acid has the effect of promoting corrosion inhibition of microemulsion system.It shows that organic acid has a promotion effect on the corrosion inhibition effect of microemulsion system.

关 键 词：离子液体 微乳液 酸性腐蚀 缓蚀性能 

分 类 号：TE357[石油与天然气工程—油气田开发工程]