石油管道防腐蚀的一种新型钢铁缓蚀剂：肉豆蔻酸二乙醇酰胺

A Novel Steel Corrosion-Inhibitor for Oil Transportation Pipes: Myristic Acid Diethanolamide

摘要: 石油输送管道连接石油开采与石油化工生产企业，然而钢铁管道使用过程中被腐蚀问题普遍存在，是制约石油工业输运与生长安全的一个重要因素。本文提出一种利用新型缓蚀剂(肉豆蔻酸二乙醇酰胺)保护钢铁的有效方法，以正交实验为基础，结合红外(IR)光谱分析，优化了肉豆蔻酸二乙醇酰胺的合成工艺。采用失重法，结合扫描电子显微镜和电化学极化测试，系统研究了一系列缓蚀剂浓度条件下的缓蚀效率，并阐明了缓蚀机理。提出的缓蚀剂对钢铁表现出良好的腐蚀防护效果，而且制备方法简单、对环境安全无污染，具有良好的应用前景。

Abstract: Oil transportation pipes are widely applied for the connection between oil exploration and oil-related fine chemical manufactories. However, there is a general issue that the steel pipes can be easily corroded during usage, which is an important factor for restricting the industrial oil transportation and the manufacture safety. Herein an effective anti-corrosion method was proposed by using a novel corrosion inhibitor (e.g., myristic acid diethanolamide). In our investigations, the synthesis process was optimized on the basis of orthogonal experiments and infrared spectrum (IR) analysis. Furthermore, based on the weight-loss method, scanning electronic microscope observations and the measurement of electrochemical polarization curves, the corrosion inhibiting properties and the potential mechanism of the novel inhibitor were investigated. The specific molecular structure of myristic acid diethanolamide enables it to show good protection for steels from corrosion. In addition, the synthesis approach of the presented environment- friendly inhibitor is quite simple, indicating a promising potential for applications.