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.
Wu Kongzhao, Zhou Wenjie, Wang Zhe, Hu Shuchun, Zhang Kun, Liu Zhiding, Zhou Yu
. Influence of pyrrole monomer concentration on corrosion resistance of PPy film layer[J]. New Chemical Materials, 2021
, 49(3)
: 147
-151
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.03.033
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