曼尼希碱及其复配缓蚀剂对N80钢的缓蚀性能  

Corrosion Inhibition of Mannich Base Corrosion Inhibitor to N80 Steel

作　　者：任晓光[1,2] 周继敏[2] 刘丹[2] 李林[2] 宋永吉[1,2] 

机构地区：[1]北京石油化工学院化学工程学院 [2]北京化工大学化学工程学院

出　　处：《钻井液与完井液》2010年第2期72-73,80,共3页Drilling Fluid & Completion Fluid

基　　金：国家自然科学基金(20676017);北京市属市管人才强教计划资助项目;北京市教委URT资助项目

摘　　要：通过在实验室配制酸性体系,采用CMB-4510A缓蚀剂快速评定仪测试腐蚀速率,评价了在酸性体系中曼尼希碱及其与钼酸钠、十六烷基三甲基溴化铵的二元或三元复配物对N80钢缓蚀性能的影响。结果表明,曼尼希碱能在金属表面形成完整的保护层,阻止了铁离子向溶液中扩散和溶液中的H+移向金属的腐蚀反应过程,从而使腐蚀反应速度减慢,达到了金属缓蚀的目的;曼尼希碱与其复合物之间具有良好的协同效应,有效地降低了金属表面的腐蚀速率,当曼尼希碱与钼酸钠的复配质量比为1∶1、曼尼希碱与十六烷基三甲基溴化铵的加量比例为1∶2以及3者质量比为1∶2∶2时缓蚀效果最好。A Mannich base and its compound with sodium molybdate and hexadecyl tri-methyl ammonium bromide is tested for its corrosion inhibitive capacity to N80-type steels in acidic environment on a CMB-4501A corrosion tester. The test results show that Mannich base can retard the diffusion of ferric ions to solution and hydrogen ions to the surface of metals by forming a protection layer on the metal. Mannich base has a good synergy with those compounds mentioned above,and effectively reduces the corrosion of metals. Mass ratio of Mannich base to sodium molybdate 1∶1,or mass ratio of Mannich base to hexadecyl tri-methyl ammonium bromide 1∶2,or a mass ration of Mannich base to sodium molybdate to hexadecyl tri-methyl ammonium bromide 1∶2∶2 gives the best corrosion inhibition.

关 键 词：曼尼希碱 缓蚀剂 腐蚀速率 协同效应 

分 类 号：TE892[石油与天然气工程—油气储运工程]