一种新型胺基磷酸酯水溶缓蚀剂的合成及其缓蚀性能

Synthesis and Inhibition of a New Modified Amine Phosphate Water Soluble Inhibitor

以妥尔油酸、异佛尔酮二胺、五氧化二磷为原料,改性合成一种胺基磷酸酯类缓蚀剂。通过动态挂片法、电化学方法及腐蚀形貌分析等评价了该缓蚀剂在H2S/CO2环境中对A106钢的缓蚀效果。结果表明:该缓蚀剂为阳极型缓蚀剂,随着缓蚀剂浓度的增加,其对A106钢的缓蚀率增加,当缓蚀剂质量浓度为200mg/L时,缓蚀率可达97.07%。缓蚀剂在碳钢表面的吸附服从Langmuir等温吸附模型。

An amine-based phosphate inhibitor was modified by tall oil acid,isophorone diamine and phosphorus pentoxide.The corrosion inhibition effect of the corrosion inhibitor on A106 steel in H2 S/CO2 environment was evaluated by dynamic hanging method,electrochemical method and corrosion morphology analysis.The results show that the corrosion inhibitor was an anodic corrosion inhibitor.As the concentration of corrosion inhibitor increased,the corrosion inhibition rate to A106 steel increased.When the corrosion inhibitor concentration was 200 mg/L,the corrosion inhibition rate reached 97.07%.The adsorption of the corrosion inhibitor on the surface of carbon steel obeyed Langmuir isotherm adsorption model.