论文部分内容阅读
以2-氨基苯并咪唑、氰尿酰氯、正己胺以及N,N-二甲基-1,3-丙二胺为原料,合成一种具有表面活性的杂环类缓蚀剂。通过测定含不同浓度缓蚀剂的盐酸溶液的表面张力来研究其表面性能。采用失重法和动电位极化及电化学阻抗谱方法考察了其与2-氨基苯并咪唑在盐酸介质中对碳钢的缓蚀行为,并通过扫描电镜观察了腐蚀碳钢试片的外貌形态。结果表明,表面活性以及多活性吸附中心的引入提高了缓蚀剂在碳钢表面的吸附能力,合成的缓蚀剂的缓蚀性能比2-氨基苯并咪唑有显著提高。在实验范围内,缓蚀剂的缓蚀效率随浓度增大而提高,电化学测试表明其为一种混合型缓蚀剂。
A 2-aminobenzimidazole, cyanuric chloride, n-hexylamine and N, N-dimethyl-1,3-propanediamine as raw materials, the synthesis of a surface-active heterocyclic corrosion inhibitor. The surface properties were investigated by measuring the surface tension of hydrochloric acid solutions containing different concentrations of corrosion inhibitors. The corrosion inhibition behavior of carbon steel with 2-aminobenzimidazole in hydrochloric acid was investigated by weight loss method, potentiodynamic polarization and electrochemical impedance spectroscopy. The morphology of corrosion carbon steel was observed by scanning electron microscope . The results showed that the surface activity and the introduction of multi-active adsorption centers increased the adsorption capacity of corrosion inhibitors on the surface of carbon steel. The corrosion inhibition performance of the synthesized corrosion inhibitors was significantly higher than that of 2-aminobenzimidazole. In the experimental range, the corrosion inhibition efficiency of corrosion inhibitor increased with the increase of concentration, and electrochemical tests showed it to be a mixed corrosion inhibitor.