新型混合脂肪基咪唑啉缓蚀剂的制备及性能研究  

Research on synthesis and performance of new mixed fatty imidazoline corrosion inhibitor

作　　者：胡薇[1] 袁斌[1] 吕松[1] 牛艳[1] 李伟光[1] 

机构地区：[1]广东工业大学环境科学与工程学院,广东广州510006

出　　处：《应用化工》2017年第9期1733-1737,1741,共6页Applied Chemical Industry

基　　金：广东省科技计划项目(2014A020216040)

摘　　要：以工业回收的精制地沟油为原料,水解制得混合脂肪酸,经酰化-环化合成了一种新型混合脂肪基咪唑啉缓蚀剂。采用红外光谱对官能团进行表征;采用失重法和电化学法对其缓蚀性能进行评价。结果表明,在5%盐酸介质中,温度50℃、腐蚀时间6 h,缓蚀剂投加量60 mg/L时,A3钢的缓蚀率98.05%;该缓蚀剂是一种以阴极为主的混合型缓蚀剂,电化学测试结果与失重法测试结果相符。Mixed fatty acids obtained from the hydrolysis of refined waste oil of industrial recycling process,were used as a raw material to make a new kind of fatty imidazoline corrosion inhibitor through amidation and cyclization reactions. The products were characterized by FTIR and S E M analysis was taken to observe the surface morphology of A 3 steel. The corrosion inhibition was evaluated by methods of static weight loss test and electrochemical test in acidic m e d i u m. Results of weight loss method showed that the inhibition rate of the inhibitor for A 3 steel was up to 98. 0 5 % at a concentration of 60 m g / L for 6 h in 5% HC 1 at 50 ℃ . The product was a kind of mixed-type corrosion inhibitor, mainly cathode type, and effects of electrochemical test were consistent with those of weight loss method.

关 键 词：缓蚀剂 地沟油 咪唑啉 混合脂肪酸 

分 类 号：TQ252[化学工程—有机化工]