一种二酰胺基吡啶季铵盐的合成及其缓蚀性能  

Synthesis of a Diamide Pyridine Quaternary Ammonium Salt and Its Corrosion Inhibition

作　　者：陈庆国 李玲杰 韩文礼 张彦军 陈勇[1] 夏明明[1] CHEN Qingguo;LI Lingjie;HAN Wenli;ZHANG Yanjun;CHEN Yong;XIA Mingming(PetroChina Tarim Oilfield Company,Kuerle 841008,China;CNPC Engineering Technology Research Company Limited,Tianjin 300451,China;CNPC Research Division of Anti-Corrosion Coating and Thermal Insulation Structure,Key Laboratory of Tubular Goods Engineering,Tianjin 300451,China)

机构地区：[1]中国石油塔里木油田公司,库尔勒841008 [2]中国石油集团工程技术研究有限公司,天津300451 [3]CNPC石油管工程重点实验室涂层材料与保温结构研究室,天津300451

出　　处：《腐蚀与防护》2020年第2期28-32,共5页Corrosion & Protection

摘　　要：利用2,3-吡啶二甲酸为主体和十二烷基胺进行酰化反应,合成了具有多个活性吸附中心的2,3-N-十二烷基-二甲酰胺吡啶衍生物,再进行季胺化反应增加其水溶性,开发出一种二酰胺基吡啶季铵盐缓蚀剂。利用动态高温高压浸泡试验和电化学试验在含二氧化碳模拟油田水中评价了该缓蚀剂对L245NCS钢的缓蚀性能。结果表明:该缓蚀剂是混合型缓蚀剂,在加量为50mg/L时,缓蚀率达到95%以上,同时对点蚀具有良好的抑制效果。A 2,3-N-dodecyl-dimethylamide pyridine derivative with multiple active adsorption centers was produced by acylation reaction of 2,3-pyridine dicarboxylic acid as the main body with dodecyl amine.And a corrosion inhibitor of diamide pyridine quaternary ammonium salt was synthesized by further quaternization reaction of the derivative to increase its water solubility.The corrosion inhibition of the corrosion inhibitor to L245 NCS steel in simulated oil field water saturated with carbon dioxide was evaluated by dynamic immersion test at high temperature and pressure and electrochemical test.The results show that the corrosion inhibitor was a mixed type.When the dosage of corrosion inhibitor was 50 mg/L,the inhibition efficiency reached over 95%.The corrosion inhibitor also had a good inhibition effect on pitting corrosion.

关 键 词：缓蚀剂 吡啶二甲酸 双十二烷基 季铵盐 

分 类 号：TG174.42[金属学及工艺—金属表面处理]