季铵盐型低聚表面活性剂对A3碳钢在盐酸介质中的缓蚀性能  

Inhibition Behavior of Quaternary Ammonium Oligomeric Surfactant for A3 Steel in Hydrochloric Acid

作　　者：李杰[1] 佟威[1] 刘建峰[1] 吴文祥 

机构地区：[1]东北石油大学化学化工学院,大庆163318 [2]石油工程学院,大庆163318

出　　处：《科学技术与工程》2011年第11期2515-2518,共4页Science Technology and Engineering

基　　金：国家自然科学基金(51074033)资助

摘　　要：以乙二胺、环氧氯丙烷、十二叔胺等为原料,无水乙醇为溶剂,通过开环和季铵化反应合成了季铵盐型低聚表面活性剂。应用腐蚀失重法研究了其在盐酸介质中对A3碳钢的缓蚀及其吸附性能。实验结果表明,在10%(ω)HCL介质中对A3碳钢具有优异的缓蚀性能,表面活性剂分子能自发地吸附在A3钢表面,在40 mg/L时其缓蚀效率已达91.5%,吸附行为符合Langmuir吸附等温式。A oligomeric surfactant with novel structure was synthesized with ethylenediamine,epichlorohydrin and dodecyl dimethyl amine by ring-opening reaction and quaternization reaction.Inhibition performance of oligomeric surfactants for corrosion of A3 steel in 10%（wt） HCl solution was investigated with weight-loss measurement.The results show that the oligomeric surfactants are good corrosion inhibiters,and the inhibition efficiency is 91.5% at its concentration of 40 mg/L.It can be spontaneously absorbed on the metal surface,and its adsorption behavior follows Langmuir＇s adsorption isotherm.

关 键 词：季铵盐 低聚表面活性剂 吸附 缓蚀性能 

分 类 号：TQ423.12[化学工程]