咪唑啉季铵盐在模拟油品沉积水中的缓蚀性能研究

韩校¹，杨政清²

1.中国船舶燃料大连有限公司

2.大连理工大学化工学院

通信作者: 韩校（1982-），助理工程师，研究方向：腐蚀与防护，E-mail：hanxiao421@163.com

Study on the Corrosion Inhibition Performance of Imidazoline Quaternary Ammonium Salt in Simulated Oil Sedimentary Water

HAN Xiao ¹, YANG Zhengqing ²

Institute of Advanced Wear & Corrosion Resistant and Functional Materials

Corresponding authors: HAN Xiao (1982-), Assistant Engineer, Research Focus: Corrosion and Protection, E-mail: hanxiao421@163.com

文章历史：收稿日期：2025-05-09

摘  要

采用电化学分析方法对5种有机缓蚀剂进行性能对比研究。通过动电位极化曲线与电化学阻抗谱（EIS）技术，系统考察了高盐度模拟油品沉积水环境下Q235碳钢的腐蚀防护行为。实验结果表明，十七烯基胺乙基咪唑啉季铵盐在临界浓度2 000 mg/L时表现出最优异的缓蚀性能，其电荷转移电阻较空白体系提升8.34倍，EIS谱呈现显著扩大的容抗弧特征。该化合物通过咪唑啉环的氮活性位点与季铵基团的协同作用，在碳钢表面形成致密化学吸附膜，缓蚀效率达87.77%，为油气领域复杂工况下碳钢材料的高效缓蚀剂开发提供了理论依据与实验支撑。

Abstract

The properties of five organic corrosion inhibitors were compared by electrochemical analysis. The corrosion protection behavior of Q235 carbon steel simulated in the high-salt oil deposition water environment was systematically investigated by using the potentiodynamic polarization curve and electrochemical impedance spectroscopy (EIS) technology. The experimental results showed that the ethyl imidazoline quaternary ammonium salt of heptatenylamine exhibited the best corrosion inhibition performance at the critical concentration of 2 000 mg/L, and its charge transfer resistance was 8.34 times higher than that of the blank system, and the EIS pattern showed a significantly expanded capacitive arc characteristic. Through the synergistic effect of the nitrogen active site of the imidazoline ring and the quaternary ammonium group, the compound formed a dense chemisorption film on the surface of carbon steel, with a corrosion inhibition efficiency of 87.77%. This study provides a theoretical basis and experimental support for the development of efficient corrosion inhibitors for carbon steel materials under complex working conditions in oil and gas fields.

关键词

管道 ; 腐蚀防护 ; 缓蚀剂 ; 油品沉积水

Keywords

pipeline ; corrosion protection ; corrosion inhibitor ; oil sedimentary water

引用本文

韩校, 杨政清. 咪唑啉季铵盐在模拟油品沉积水中的缓蚀性能研究[J]. 表面工程与再制造, 2025, 25(3): 19-25. https://doi.org/10.26935/j.issn.2097-5317.2025.0013

HAN Xiao, YANG Zhengqing. Study on the Corrosion Inhibition Performance of Imidazoline Quaternary Ammonium Salt in Simulated Oil Sedimentary Water[J]. Surface Engineering & Remanufacturing, 2025, 25(3): 19-25. https://doi.org/10.26935/j.issn.2097-5317.2025.0013

中图分类号

TE988

基金项目

无

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