含噻二唑季铵盐表面活性剂的合成及缓蚀杀菌性能研究  

Synthesis, Corrosion Inhibition and Bactericidal Performance of an Ammonium Salt Surfactant Containing Thiadiazole

作　　者：朱海林 陆小猛 李晓芬 王俊霞 刘建华 冯丽 马雪梅 胡志勇 ZHU Hailin;LU Xiaomeng;LI Xiaofen;WANG Junxia;LIU Jianhua;FENG Li;MA Xuemei;HU Zhiyong(School of Chemical Engineering and Technology,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学化学工程与技术学院,太原030051

出　　处：《中国腐蚀与防护学报》2022年第1期51-59,共9页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金(51701188);山西省自然科学基金(201801D221088)。

摘　　要：结合杂环化合物和季铵盐表面活性剂用作缓蚀剂和杀菌剂的结构特点,合成了含噻二唑杂环的季铵盐表面活性剂(MTOTB),并采用1HNMR、ESI-MS和FT-IR对其结构进行表征。采用表面张力法研究其表面活性,采用电化学测试和表面分析的方法研究其在含硫酸盐还原菌(SRB)的模拟海水中对碳钢的缓蚀性能。结果表明,MTOTB在模拟海水中的临界胶束浓度为0.11 mmol/L。MTOTB浓度为0.2 mmol/L时,对在含SRB菌的模拟海水中浸泡21 d的碳钢的缓蚀率可达95.81%。SEM/EDS与XPS结果表明,MTOTB可以有效地吸附在碳钢表面,抑制碳钢的微生物腐蚀。An ammonium salt surfactant containing thiadiazole(MTOTB) was synthesized as a novel inhibitor, aiming to combine the characteristics in corrosion inhibition and bactericidal property of heterocyclic compound and ammonium salt surfactant. The structure, surface activity and corrosion inhibition performance for carbon steel in simulated seawater with SRB of the prepared product were characterized by means of1 HNMR, ESI-MS, FT-IR, surface tension measurements, electrochemical measurements and SEM-EDS. The results showed that the critical micelle concentration was 0.11 mmol/L for MTOTB in the simulated seawater. The inhibition efficiency could reach 95.81% for carbon steel in the simulated seawater with SRB for 21 d through addition of 0.2 mmol/L MTOTB. The results of SEM-EDS and XPS showed that MTOTB could adsorb on the surface of carbon steel effectively, so that inhibit the microbial corrosion of carbon steel.

关 键 词：季铵盐表面活性剂 噻二唑衍生物 表面活性 分子内协同效应 电化学测试 硫酸盐还原菌 

分 类 号：TG171[金属学及工艺—金属表面处理]