日用化学工业（中英文）2025，Vol.55Issue(3)：295-304,10.DOI:10.3969/j.issn.2097-2806.2025.03.004
三嗪基Gemini表面活性剂与2-巯基乙醇在3.5%NaCl中对碳钢的缓蚀协同效应研究
Synergistic effect of triazine-based Gemini surfactant and 2-mercaptoethanol on corrosion inhibition of carbon steel in 3.5%NaCl solution
摘要
Abstract
The triazine-based Gemini surfactant C12-2-C12 was synthesized with cyanuric chloride,dodecylamine,ethylenediamine,N,N-dimethyl-1,3-propanediamine and ethyl bromide as raw materials.The structure of the product was characterized by Fourier transform infrared spectroscopy,1H NMR and high-resolution mass spectrometry.The synergistic effect of C12-2-C12 and 2-mercaptoethanol(TZ)on corrosion inhibition of carbon steel in 3.5%NaCl solution at 60℃was investigated by static weight loss test,electrochemical impedance spectroscopy(EIS),and potentiodynamic polarization test.The results showed that,the corrosion inhibition rate could reach 95.47%when n(C12-2-C12)∶n(TZ)=7∶3,and the synergistic parameter of corrosion inhibition was 1.52.The potentiodynamic polarization curves indicated that the mixed corrosion inhibitors in 3.5%NaCl solution behaved like a hybrid corrosion inhibitor.The results of scanning electron microscopy and X-ray photoelectron spectroscopy showed that the presence of TZ could complement the adsorption sites of C12-2-C12 on the surface of carbon steel and enhance the denseness of the adsorption film,thus enhancing the corrosion inhibition performance.Molecular dynamics simulations were used to specifically elucidate the corrosion inhibition mechanism,which proved that there was good synergistic corrosion inhibition effect.This work would be expected to improve the ability of corrosion inhibitors to act in harsh environments and prolong the protective period.关键词
2-巯基乙醇/三嗪基Gemini表面活性剂/协同缓蚀/NaClKey words
2-mercaptoethanol/triazine-based Gemini surfactant/synergistic corrosion inhibition/NaCl分类
化学工程引用本文复制引用
梁鹏慧,原梦颖,阮义蕾,高国芳,胡志勇,朱海林..三嗪基Gemini表面活性剂与2-巯基乙醇在3.5%NaCl中对碳钢的缓蚀协同效应研究[J].日用化学工业（中英文）,2025,55(3):295-304,10.基金项目
山西省基础研究计划资助项目(202103021224207) （202103021224207）
中北大学研究生科技立项(20231926) （20231926）
