Preparation of polyaniline/graphene composites with excellent anti-corrosion properties and their application in waterborne polyurethane anticorrosive coatings

Polyaniline, a novel conductive polymer, has been widely used as an anti-corrosive filler. In order to further improve the anti-corrosion performance, polyaniline/graphene (PANI/RGO) composites were prepared by in situ polymerization. And PANI/RGO composite anti-corrosion coatings were also prepared...

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Bibliographic Details
Published in:RSC advances 2016-01, Vol.6 (98), p.95965-95972
Main Authors: Cai, Kewen, Zuo, Shixiang, Luo, Shipin, Yao, Chao, Liu, Wenjie, Ma, Jianfeng, Mao, Huihui, Li, Zhongyu
Format: Article
Language:English
Subjects:
Coatings
Corrosion prevention
Fillers
Graphene
Particulate composites
Polarization
Polyanilines
Polyurethane resins
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Summary:Polyaniline, a novel conductive polymer, has been widely used as an anti-corrosive filler. In order to further improve the anti-corrosion performance, polyaniline/graphene (PANI/RGO) composites were prepared by in situ polymerization. And PANI/RGO composite anti-corrosion coatings were also prepared using PANI/RGO as anti-corrosive filler and waterborne polyurethane (WPU) as matrix. The anti-corrosion properties were proven by potentiodynamic polarization curves (Tafel polarization curves), electrochemical impedance spectroscopy and salt spray test analysis of the WPU anti-corrosive coatings. The results showed that the obtained composite coatings reinforced by 0.75 wt% of PANI/RGO composites possessed superior anti-corrosive performance when the graphene content of the filler was 4 wt%. Polyaniline, a novel conductive polymer, has been widely used as an anti-corrosive filler.
ISSN:2046-2069
2046-2069
DOI:10.1039/c6ra19618g