Synergistic effect of polyaniline grafted basalt plates for enhanced corrosion protective performance of epoxy coatings

Abstract Polyaniline-graft-basalt plates (PANI-g-BP) were prepared based on γ-aminopropyltriethoxysiliane (APTS)-modified basalt plates via in-situ chemical-oxidation polymerization method. Three PANI-g-BP samples were prepared by varying the ratio of aniline to BP, i.e. 1:2, 1:4, 1:6. The results of Fourier transformation infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and thermo gravimetric analysis (TGA) confirmed that PANI was successfully grafted on the surface of basalt plates. Different coatings were prepared by adding the synthesized PANI-g-BPs or PANI, and were coated on the mild steel subsequently. The water-uptake property, the adhesion strength and the passive properties of the coatings were investigated. In addition, the protective performance of the coatings was tested by the electrochemical impedance spectroscopy (EIS) in 12% NaCl solution at 95 °C. The results indicated that the coatings with 10% PANI-g-BP (1:4) exhibited the best protective performance and its impedance at 0.01 Hz is higher than 10 10 after 80 days immersing.

[1]  G. Venkatachari,et al.  Synthesis of tungstate doped polyaniline and its usefulness in corrosion protective coatings , 2011 .

[2]  B. Ramezanzadeh,et al.  Evaluation of the corrosion resistance of an epoxy-polyamide coating containing different ratios of micaceous iron oxide/Al pigments , 2011 .

[3]  M. Jafari,et al.  Effect of polypyrrole–montmorillonite nanocomposites powder addition on corrosion performance of epoxy coatings on Al 5000 , 2009 .

[4]  J. Yeh,et al.  Enhancement of Corrosion Protection Effect in Polyaniline via the Formation of Polyaniline−Clay Nanocomposite Materials , 2001 .

[5]  Xinhua Ouyang,et al.  A facile and template-free method for preparation of polythiophene microspheres and their dispersion for waterborne corrosion protection coatings , 2014 .

[6]  B. Ramezanzadeh,et al.  An evaluation of the corrosion resistance and adhesion properties of an epoxy-nanocomposite on a hot-dip galvanized steel (HDG) treated by different kinds of conversion coatings , 2011 .

[7]  C. Alemán,et al.  Corrosion protection with polyaniline and polypyrrole as anticorrosive additives for epoxy paint , 2008 .

[8]  Maria de Fátima Montemor,et al.  Functional and smart coatings for corrosion protection: A review of recent advances , 2014 .

[9]  G. Venkatachari,et al.  Corrosion protection coating containing polyaniline glass flake composite for steel , 2008 .

[10]  Yen Wei,et al.  Room-temperature cured hydrophobic epoxy/graphene composites as corrosion inhibitor for cold-rolled steel , 2014 .

[11]  T. Shahrabi,et al.  Corrosion protection evaluation of silica/epoxy hybrid nanocomposite coatings to AA2024 , 2009 .

[12]  C. Alemán,et al.  Anticorrosion performances of epoxy coatings modified with polyaniline : A comparison between the emeraldine base and salt forms , 2009 .

[13]  J. Rogan,et al.  The use of nanoclay in preparation of epoxy anticorrosive coatings , 2014 .

[14]  Hongfei Lin,et al.  Advanced micro/nanocapsules for self-healing smart anticorrosion coatings , 2015 .

[15]  I. Verpoest,et al.  Mechanical and anticorrosion properties of nanosilica-filled epoxy-resin composite coatings , 2014 .

[16]  Suwadee Kongparakul,et al.  Synthesis of polyaniline/montmorillonite nanocomposites with an enhanced anticorrosive performance , 2014 .

[17]  M. Esmaeilpour,et al.  Comparison between the effect of nanoglass flake and montmorillonite organoclay on corrosion performance of epoxy coating , 2010 .

[18]  M. Saeb,et al.  Anti-corrosion hybrid coatings based on epoxy–silica nano-composites: Toward relationship between the morphology and EIS data , 2014 .

[19]  E. Han,et al.  Protection of epoxy coatings containing polyaniline modified ultra-short glass fibers , 2013 .

[20]  J. J. Santana,et al.  Resistance of metallic substrates protected by an organic coating containing glass flakes , 2010 .

[21]  Y. Liu,et al.  The failure behaviour of an epoxy glass flake coating/steel system under marine alternating hydrostatic pressure , 2014 .

[22]  Y. S. Chen,et al.  Long-term anticorrosion behaviour of polyaniline on mild steel , 2007 .

[23]  A. Olad,et al.  Preparation and anticorrosive properties of PANI/Na-MMT and PANI/O-MMT nanocomposites , 2008 .

[24]  Bernhard Wessling,et al.  Corrosion protection of mild steel by coatings containing polyaniline , 1995 .

[25]  Jinlong Hu,et al.  Synthesis and anticorrosive properties of polymer–clay nanocomposites via chemical grafting of polyaniline onto Zn-Al layered double hydroxides , 2014 .

[26]  O. P. Modi,et al.  Chitosan-polypyrrole-SiO2 composite coatings with advanced anticorrosive properties , 2015 .

[27]  Yen Wei,et al.  Advanced anticorrosive coatings prepared from electroactive polyimide–TiO2 hybrid nanocomposite materials , 2010 .

[28]  Jixiao Wang,et al.  High Performance Self-Healing Epoxy/Polyamide Protective Coating Containing Epoxy Microcapsules and Polyaniline Nanofibers for Mild Carbon Steel , 2013 .

[29]  G. Venkatachari,et al.  Preparation of polyaniline–Fe2O3 composite and its anticorrosion performance , 2007 .

[30]  J. Yeh,et al.  Novel anticorrosion coatings prepared from polyaniline/graphene composites , 2012 .

[31]  B. Ramezanzadeh,et al.  Studying the influence of nano-Al2O3 particles on the corrosion performance and hydrolytic degradation resistance of an epoxy/polyamide coating on AA-1050 , 2014 .

[32]  K. Kabiri,et al.  Corrosion performance of epoxy coatings containing silane treated ZrO2 nanoparticles on mild steel in 3.5 % NaCl solution , 2011 .

[33]  A. Kalendová,et al.  Anticorrosion properties of polyaniline-coated pigments in organic coatings , 2008 .

[34]  C. Cui,et al.  Corrosion resistance and calcium-phosphorus precipitation of micro-arc oxidized magnesium for biomedical applications , 2015 .

[35]  G. Venkatachari,et al.  A new corrosion protection coating with polyaniline-TiO2 composite for steel , 2007 .

[36]  Z. Mandić,et al.  Inhibition of steel corrosion by polyaniline coatings , 2003 .