硫脲基咪唑啉季铵盐缓蚀剂的合成及效果评价  

Synthesis and Effectiveness Evaluation of Thiourea Imidazoline Quaternary Ammonium Salt Corrosion Inhibitor

作　　者：刘金波 郭忠良 郭志强 杨华 亓雯 LIU Jinbo;GUO Zhongliang;GUO Zhiqiang;YANG Hua;QI Wen(Inner Mongolia Hengkun Chemical Co.,Ltd.,Ordos 016299,China)

机构地区：[1]内蒙古恒坤化工有限公司,内蒙古鄂尔多斯016299

出　　处：《河南科技》2024年第7期92-95,共4页Henan Science and Technology

摘　　要：【目的】使用硫脲、油酸、二乙烯三胺为原料合成硫脲基咪唑啉季铵盐缓蚀剂。【方法】通过产品收率计算获得最佳物料配比,使用傅里叶红外光谱分析对合成的缓蚀剂官能团进行表征,确认缓蚀剂的合成效果。在含有不同缓蚀剂的腐蚀介质中进行静态挂片失重试验,计算金属的腐蚀速率和药剂缓蚀率,并对金属表面微观形貌进行表征分析。【结果】当油酸、二乙烯三胺的物料配比为1∶0.8时,药剂的合成效果最佳,收率最高;当腐蚀介质中药剂含量升高,对金属的缓蚀作用增强,当浓度达到150 mg/L时,缓蚀能力最佳。【结论】对金属表面进行微观形貌观察发现,含有药剂的金属表面形成了一层稳定的金属钝化膜,说明药剂起到了很好的缓蚀效果。[Purposes]In this experiment,thiourea,oleic acid,and diethylenetriamine were used as raw materials to synthesize thiourea imidazoline quaternary ammonium salt corrosion inhibitors.[Methods]The optimal material ratio was obtained by calculating the product yield,and the functional groups of the synthesized corrosion inhibitor were characterized by Fourier transform infrared spectroscopy to confirm the synthesis effect of the corrosion inhibitor.Static hanging weight loss experiments were conducted in corrosion media containing different corrosion inhibitors to calculate the corrosion rate of metals and the corrosion inhibition rate of agents,and the microstructure of the metal surface was analyzed and characterized.[Findings]When the ratio of oleic acid to diethylenetriamine is 1:0.8,the synthesis effect of the agent is optimal and the yield is the highest;When the content of traditional Chinese medicine in the corrosive medium increases,the corrosion inhibition ability of metals is enhanced.When the concentration reaches 150 mg/L,the corrosion inhibition ability is optimal.[Conclusions]Microscopic observation of the metal surface reveals that a stable metal passivation film is formed on the metal surface containing the agent,indicating that the agent has a good corrosion inhibition effect.

关 键 词：化工腐蚀 咪唑啉季铵盐 缓蚀性能 20#碳钢 

分 类 号：TQ252.3[化学工程—有机化工]