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日用化学工业（中英文）

日用化学工业 ›› 2017, Vol. 47 ›› Issue (11): 616-620.doi: 10.13218/j.cnki.csdc.2017.11.004

• 开发与应用 • 上一篇    下一篇

壳聚糖与CTAB复合缓蚀剂对Q235钢的缓蚀性能研究

唐旭东1, 刘金彦2   

  1. 1.中国计量大学 材料科学与工程学院,浙江 杭州 310018;
    2.内蒙古科技大学 化学与化工学院,内蒙古 包头 014010
  • 收稿日期:2017-08-02 出版日期:2017-11-22 发布日期:2019-03-21
  • 通讯作者: 刘金彦,教授,博士,电话:(0472)5953325,E-mail:liujinyan2007@163.com。
  • 作者简介:唐旭东(1997-),男,辽宁东港人,E-mail:838106684@qq.com。
  • 基金资助:
    国家自然科学基金资助项目(21463016)

Corrosion inhibition performance of chitosan and CTAB
blend system for Q235 steel in acidic medium

TANG Xu-dong1, LIU Jin-yan2   

  1. 1.College of Materials Science and Engineering,China Jiliang University,Hangzhou,Zhejiang 310018,China;
    2.College of Chemistry and Chemical Engineering,Inner Mongolia University of Science & Technology, Baotou,Inner Mongolia 014010,China
  • Received:2017-08-02 Online:2017-11-22 Published:2019-03-21

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摘要： 采用失重法、交流阻抗法和极化曲线法研究了盐酸介质中壳聚糖及其与十六烷基三甲基溴化铵(CTAB)复合缓蚀剂对Q235钢的缓蚀性能。测试结果表明,单独使用壳聚糖作为缓蚀剂,对Q235钢表面有较强的缓蚀性能。当壳聚糖的质量浓度为0.1 g/L时,在1.0 mol/L的盐酸介质中30 ℃腐蚀24 h,3种方法测得的缓蚀效率均达到85%以上;加入CTAB后,缓蚀性能明显增强,CTAB的质量分数为10%时,缓蚀效率达到了92%以上。2种缓蚀剂在Q235钢表面吸附机理不同且吸附过程相互补充,因此二者复配后缓蚀性能加强。

关键词: 十六烷基三甲基溴化铵, 壳聚糖, 缓蚀剂, Q235钢

Abstract: Corrosion inhibition performance for Q235 steel in acidic medium with chitosan and chitosan/cetyltrimethylammonium bromide (CTAB) blend system was studied with three methods (weight loss,potentio-dynamic polarization and electrochemical ac-impedance spectroscopy (EIS)).Results indicated that the inhibition efficiency is good that achieves 85% when the chitosan with mass concentration of 0.1 g/L is used as inhibitor alone and under conditions of corrosion medium,1.0 mol/L HCl;temperature,30 ℃ for 24 h.After addition of CTAB,the corrosion efficiency is significantly enhanced.When the mass fraction of CTAB is 10%,the inhibition efficiency reaches 92% and even higher.Both chitosan and CTAB show the corrosion inhibition performance.Their surface adsorption mechanism is different.However,when they are blended together,there is synergic effect and the corrosion inhibition efficiency is enhanced.

Key words: cetyltrimethylammonium bromide, chitosan, corrosion inhibitor, Q235 steel

中图分类号: 

  • TQ423.12