基于壬酸复配的绿色气相缓蚀剂及其性能研究

王佳, 刘心悦, 卢立新

doi:10.16577/j.issn.1001-1560.2024.0236

材料保护 >

2024 , Vol. 57 >Issue 10: 162 - 167

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0236

工艺篇

基于壬酸复配的绿色气相缓蚀剂及其性能研究

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¹江南大学机械工程学院； ²江苏省食品先进制造装备技术重点实验室

卢立新(1966-)，教授，博士，主要研究方向为包装技术与安全、包装系统及装备，E-mail:lulx＠jiangnan.edu.cn

收稿日期: 2023-12-19

修回日期: 2024-03-30

录用日期: 2024-04-05

网络出版日期: 2024-12-22

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Study on the Performance of Green Volatile Corrosion Inhibitor Based on Pelargonic Acid Compound

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(1.School of Mechanical Engineering， Jiangnan University， Wuxi 214122， China；2.Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment Technology， Wuxi 214122， China)

LU Lixin (1966-)， Professor， Ph.D.， Research Focus: Packaging Technology and Safety， Packaging Systems and Equipment， E-mail: lulx＠jiangnan.edu.cn

Received date: 2023-12-19

Revised date: 2024-03-30

Accepted date: 2024-04-05

Online published: 2024-12-22

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摘要

气相缓蚀技术在金属腐蚀防护中发挥着重要作用，研发新型环保且高效的气相缓蚀剂配方具有重要意义。以10 钢为研究对象，开展壬酸与钼酸钠双组分复配，通过失重试验探究其气相缓蚀效果，采用电化学工作站、水接触角测试仪、白光干涉形貌仪、扫描电镜、能谱仪对电化学和失重试验后的金属表面腐蚀情况进行分析。结果表明:复配缓蚀剂是一种阳极缓蚀剂；与单组分比较，不同比例的壬酸与钼酸钠复配剂的缓蚀效果均得到提高；壬酸与钼酸钠复配优化能发挥协同作用，当复配比例(质量比)为7 ∶3 条件下，其缓蚀效率达92.89%，试样金属表面水接触角为112.6°并形成了疏水保护层，显著抑制了Fe 的溶解和氧化产物生成，有效降低了金属表面粗糙度。

关键词： 壬酸; 钼酸钠; 防锈; 气相缓蚀剂; 腐蚀

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王佳, 刘心悦, 卢立新 . 基于壬酸复配的绿色气相缓蚀剂及其性能研究[J]. 材料保护, 2024 , 57(10) : 162 -167 . DOI: 10.16577/j.issn.1001-1560.2024.0236

Abstract

The volatile corrosion inhibition technology plays an important role in metal corrosion protection，and it is of great significance to develop new environment-friendly and efficient volatile corrosion inhibitor formulations.Using 10 steel as the research object，a study was conducted on the binary combination of pelargonic acid and sodium molybdate to explore its volatile phase corrosion inhibition effect through weight loss experiments.The corrosion conditions of the metal surfaces after electrochemical and weight loss tests were analyzed using electrochemical workstation， water contact angle tester， white light interferometer， scanning electron microscopy (SEM)， and energy dispersive spectrometer(EDS).Results showed that the composite inhibitor acted as an anodic corrosion inhibitor.Compared to single components， the corrosion inhibition efficiency of the different ratios of pelargonic acid and sodium molybdate was improved.The optimized combination of pelargonic acid and sodium molybdate exhibited a synergistic effect，achieving a corrosion inhibition efficiency of 92.89%at a ratio of 7 ∶3.The water contact angle of the metal surface was measured at 112.6°， forming a hydrophobic protective layer that significantly suppressed the dissolution of Fe and the formation of oxidation products， effectively reducing the surface roughness of the metal.

Key words： pelargonic acid; sodium molybdate; anti-rust; volatile corrosion inhibitor; corrosion

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