水溶性丙烯酰胺共聚物的缓蚀性能  

Corrosion Inhibition of Soluble Acrylamide Copolymer

作　　者：孙绪金 张寒露[2] 李亮[2] 于良民[1] 吴刚[1] SUN Xujin;ZHANG Hanlu;LI Liang;YU Liangmin;WU Gang(Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education,Colloege of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China;Institute of Naval Equipment Technology,Beijing 102442,China)

机构地区：[1]中国海洋大学海洋化学理论与工程技术教育部重点实验室,化学与化工学院,青岛266100 [2]海军装备技术研究所,北京102442

出　　处：《腐蚀与防护》2018年第11期827-832,共6页Corrosion & Protection

基　　金：国家重点研发计划项目(2016YFC0802301);中央高校基本科研业务费专项资金(201562026)

摘　　要：采用失重法、电化学方法以及表面分析手段研究了水溶性良好的丙烯酰胺(AM)和2-丙烯酰胺-2-甲基丙磺酸(AMPS)的共聚物(PAA)对Q235钢在1mol/L盐酸溶液中的缓蚀性能。结果表明:PAA对碳钢的腐蚀具有良好的抑制作用,缓蚀率随着PAA加入量的增加而增大,当PAA加入量为500mg/L时,缓蚀率能达到91%。PAA是一种混合抑制型缓蚀剂,同时具有非常优良的后效性。缓蚀剂分子可以吸附在金属表面,形成一层疏水性的保护膜,从而起到减缓腐蚀的作用,吸附行为符合Langmuir吸附等温式。The corrosion inhibition of soluble poly （acrylamide-2-acrylamide-2-methyl propane sulfonic acid） （PAA） for Q235 steel in 1 mol/L HCL solution was evaluated by weight-loss method, electrochemical method and morphology characterization methods. The results showed that PAA had good corrosion inhibition, and the corrosion rate increased with the increase of PAA. When the content of inhibitor was 500 mg/L, corrosion inhibition efficiency could reach up to 91%. P.hA acted as a mixed-type corrosion inhibitor, in the meanwhile, it had excellent aftereffect. The corrosion inhibitor molecules could be adsorbed on the metal surface, forming a hydrophobic layer of protective film, so as to slow down the metal corrosion. The adsorption of inhibitor molecular on the metal surface was in line with the Langmuir adsorption isotherm.

关 键 词：缓蚀剂 聚(丙烯酰胺-2-丙烯酰胺-2-甲基丙磺酸) 吸附 电化学 表面分析 

分 类 号：TG174[金属学及工艺—金属表面处理]