Superamphiphobicity and electroactivity enabled dual physical/chemical protections in novel anticorrosive nanocomposite coatings

Superamphiphobic and electroactive composite coating on aluminum substrate was successfully fabricated by integrating epoxy, polyaniline (PANI), fluorinated ethylene propylene, carbon nanotubes and SiO2 nanoparticles into a two-layer coating configuration with nano/micro hierarchical surface structu...

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Bibliographic Details
Published in:Polymer (Guilford) 2016-02, Vol.85, p.37-46
Main Authors: Yuan, Ruixia, Wu, Shiqi, Wang, Baohui, Liu, Zhanjian, Mu, Liwen, Ji, Tuo, Chen, Long, Liu, Bowen, Wang, Huaiyuan, Zhu, Jiahua
Format: Article
Language:English
Subjects:
Aluminum
Anti-corrosion coating
Coatings
Composite coatings
Corrosion prevention
Durability
Electroactivity
Nanostructure
Polymer nanocomposites
Protective coatings
Superamphiphobic property
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Summary:Superamphiphobic and electroactive composite coating on aluminum substrate was successfully fabricated by integrating epoxy, polyaniline (PANI), fluorinated ethylene propylene, carbon nanotubes and SiO2 nanoparticles into a two-layer coating configuration with nano/micro hierarchical surface structure. The composite coating demonstrates strong adhesion, excellent wear resistance and durable anti-wettability. The electrochemical tests demonstrated significantly enhanced anticorrosion performance by surface barrier effect of the superamphiphobic coating and redox catalytic capability of embedded electroactive PANI. The design principle of the multi-functional coatings will definitely benefit the advancement of durable anti-corrosive coatings and the achieved superior properties will promise a wider engineering applications in petroleum related industries. Superamphiphobic and electroactive nanocomposite coating manufactured by facile spraying processes shows excellent anticorrosion property in corrosive media due to its dual physical and chemical protections. [Display omitted] •Spraying processable electroactive/superamphiphobic composite coating.•Composite coating exhibits good wear-resistance, durable water-repellency and strong adhesion.•Excellent anticorrosion by physical barrier effect of superamphiphobic surface.•Excellent anticorrosion by catalytic redox effect of electroactive PANI.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2016.01.014