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合成了一种新型含氮杂环有机物:2-(4-叔丁基-苯甲基硫)-5-(1,2,4-三氮唑)-甲基-(1,3,4-噁二唑)(TBTO),通过交流阻抗、动电位极化、失重实验研究了其在酸性介质中的缓蚀效率,并用扫描电镜方法分析了碳钢表面的腐蚀形貌变化.结果表明:TBTO在0.5mol/L H2SO4中对Q235钢的缓蚀作用高达96.2%,能同时抑制碳钢腐蚀的阴、阳极反应过程;化合物在碳钢表面上的吸附行为服从Langmuir吸附等温式.同时用量子化学中的从头算方法对缓蚀剂的分子结构与缓蚀性能的关系进行了研究.
A novel nitrogen-containing heterocycle organism was synthesized: 2- (4-tert-butyl-phenylmethylthio) -5- (1,2,4-triazole) -methyl- (TBTO). The corrosion inhibition efficiency in acid medium was investigated by AC impedance, potentiodynamic polarization and weight loss experiments. The corrosion morphology of the surface of carbon steel was analyzed by scanning electron microscopy. The results showed that TBTO The corrosion inhibition of Q235 steel in 0.5 mol / L H2SO4 was as high as 96.2%, which could inhibit both the anodic and cathodic reactions of carbon steel corrosion. The adsorption behavior of the compounds on the surface of carbon steel obey Langmuir adsorption isotherm. The ab initio method was used to study the relationship between the molecular structure and corrosion inhibition of corrosion inhibitor.