科学研究

吡咯单体浓度对聚吡咯膜层的防腐蚀性能影响研究

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  • 1.西南交通大学材料科学与工程学院,成都610031;
    2.材料先进技术教育部重点实验室,成都610031
武孔昭(1995-),男,硕士研究生,主要研究方向为功能材料,E-mail:1140751551@qq.com。

收稿日期: 2019-10-27

  修回日期: 2020-11-24

  网络出版日期: 2021-05-10

基金资助

高技术有机纤维四川省重点实验室开放基金(PLN2016-09)

Influence of pyrrole monomer concentration on corrosion resistance of PPy film layer

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  • 1. School of Materials Science and Engineering,Southwest Jiaotong University,Chengdu 610031;
    2. Key Laboratory of Advanced Technologies of Materials,Ministry of Education,Chengdu 610031

Received date: 2019-10-27

  Revised date: 2020-11-24

  Online published: 2021-05-10

摘要

采用恒电位电化学沉积法,以十二烷基苯磺酸钠(SDBS)为掺杂剂,通过调节吡咯单体浓度(0.05mol/L、0.10mol/L、0.15mol/L、0.20mol/L)在Q235钢表面制备出系列聚吡咯(PPy)膜层。红外光谱表征显示SDBS成功掺杂到PPy中;扫描电镜显示吡咯单体浓度为0.10mol/L时,得到的PPy颗粒尺寸最小,膜层最为致密;动电位极化曲线和电化学阻抗谱的测试研究了Q235钢表面系列PPy膜层的防腐蚀性能,确定了Py单体浓度为0.10mol/L时,PPy膜层的腐蚀电流Icorr和腐蚀速率CR最小,表现出优异的防腐蚀性能。

本文引用格式

武孔昭, 周文杰, 王哲, 胡书春, 张鲲, 刘志定, 周玉 . 吡咯单体浓度对聚吡咯膜层的防腐蚀性能影响研究[J]. 化工新型材料, 2021 , 49(3) : 147 -151 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.03.033

Abstract

A series of polypyrrole (PPy) films were prepared on the surface of Q235 steel by constant potential electrochemical deposition with SDBS as dopant and by adjusting the concentration of pyrrole monomer (0.05mol/L,0.10mol/L,0.15mol/L,0.20mol/L).FT-IR was used to characterize the successful doping of SDBS into PPy.The SEM showed that the Py monomer concentration was 0.10mol/L,the PPy particle size was the smallest,and the film layer was densest.The Q235 steel was tested by the dynamic potential polarization curve and electrochemical impedance spectroscopy.The anti-corrosion performance of the surface series PPy film layer was determined.The corrosion current Icorr and the corrosion rate CR of the PPy film layer were the smallest when the Py monomer concentration was 0.10mol/L,showing excellent corrosion resistance.

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