模拟海水淡化一级反渗透产水中咪唑啉复配缓蚀剂对碳钢的缓蚀效果

发布时间：2018-06-06 11:26

  本文选题：碳钢 + 咪唑啉　； 参考：《腐蚀与防护》2017年10期

【摘要】：通过电化学测试、原子力显微镜(AFM)、X射线光电子能谱法(XPS)和X射线衍射法(XRD)研究了2-十一烷基-N-羧甲基-N-羟乙基咪唑啉(UHCI)与硫酸锌(ZnSO4)复配对20钢在模拟海水淡化一级反渗透产水中的缓蚀效果。结果表明:复配缓蚀剂是一种混合型缓蚀剂,能有效抑制20钢的腐蚀,复配缓蚀剂的添加总量为100mg/L时,最佳配比为50mg/L HUCI+50mg/L ZnSO4,此时缓蚀率达到96.99%;UHCI分子吸附在金属阳极区,抑制了阳极反应,ZnSO4以Zn(OH)2的形式沉积在金属阴极区,抑制了阴极反应。
[Abstract]:By electrochemical testing, Atomic force microscope (AFM) X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) were used to study the corrosion inhibition effects of 2-undecyl -N-carboxymethyl -N-hydroxyethyl imidazoline (UHCI) and zinc sulfate (ZnSO _ 4) on the corrosion inhibition of 20 steel in simulated seawater desalination water of primary reverse osmosis. The results show that the composite inhibitor is a mixed corrosion inhibitor, which can effectively inhibit the corrosion of 20 steel. When the total amount of the complex inhibitor is 100 mg / L, the optimum ratio is 50 mg / L HUCI 50 mg / L ZnSO 4, and the inhibition rate reaches 96.99% UHCI adsorbed in the metal anode region. The anodic reaction ZnSO4 was deposited in the metal cathode region in the form of ZnOH2 and the cathodic reaction was inhibited.
【作者单位】： 上海电力学院上海市电力材料防护与新材料重点实验室;上海发凯化工有限公司;
【基金】：上海市科委项目(14DZ2261000)
【分类号】：P747;TG174.42
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本文编号：1986363