Long-term corrosion protection of mild steel by epoxy coating containing self-doped polyaniline nanofiber

2017 ◽  
Vol 229 ◽  
pp. 39-46 ◽  
Author(s):  
Shihui Qiu ◽  
Cheng Chen ◽  
Wenru Zheng ◽  
Wei Li ◽  
Haichao Zhao ◽  
...  
Keyword(s):  
Mild Steel ◽  
Corrosion Protection ◽  
Epoxy Coating ◽  
Doped Polyaniline ◽  
Polyaniline Nanofiber

scholarly journals Corrosion behavior of duplex polyaniline/epoxy coating on mild steel in 3% NaCl

2005 ◽  
Vol 59 (11-12) ◽  
pp. 317-320
Author(s):  
Milica Gvozdenovic ◽  
Branimir Grgur ◽  
Zorica Kacarevic-Popovic ◽  
Vesna Miskovic-Stankovic
Keyword(s):  
Mild Steel ◽  
Corrosion Protection ◽  
Corrosion Behavior ◽  
Epoxy Coating ◽  
Constant Current ◽  
Pani Film ◽  
Electrode Position ◽  
Gravimetric Analysis ◽  
Epoxy Coatings ◽  
New Findings

The corrosion behavior and thermal stability of epoxy coatings electrodeposited on mild steel and on mild steel with electrochemically deposited polyaniline (PANI) film were investigated by electrochemical impedance spectroscopy (EIS) and thermo gravimetric analysis (TGA). The aim of the paper was to present new findings on the corrosion protection of mild steel by a duplex PANI/-epoxy coating in 3% NaCI solution and to determine the effect of thin PANI film on the protective properties of the coating. PANI film was deposited electrochemically on mild steel from an aqueous solution of 0.5 mol dm"3 sodium benzoate and 0.1 mol dm"3 aniline at a constant current density of 1.5 mA cm"2. Non-pigmented epoxy coatings on mild steel and on mild steel with PANI film were obtained by cathodic electrode position at constant voltage and stirring conditions. The resin concentration in the electrode position bath was 10 wt.% solid dispersion in water at pH 5.7. The applied voltage was 250 V, the temperature 26?C and the deposition time 3 min. It was shown that thin PANI film could be used to modify the surface of mild steel prior to epoxy coating deposition, due to the increased corrosion protection of a duplex PANI/epoxy coating comparing to an epoxy coating on mild steel in 3% NaCl solution.

Corrosion protection performance of waterborne epoxy coatings containing self-doped polyaniline nanofiber

2017 ◽  
Vol 407 ◽  
pp. 213-222 ◽  
Author(s):  
Shihui Qiu ◽  
Cheng Chen ◽  
Mingjun Cui ◽  
Wei Li ◽  
Haichao Zhao ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Epoxy Coatings ◽  
Waterborne Epoxy ◽  
Doped Polyaniline ◽  
Polyaniline Nanofiber

Evaluation of the corrosion protection properties of an epoxy coating containing sol–gel surface modified nano-zirconia on mild steel

RSC Advances ◽  
2015 ◽  
Vol 5 (36) ◽  
pp. 28769-28777 ◽  
Author(s):  
S. A. Haddadi ◽  
M. Mahdavian ◽  
E. Karimi
Keyword(s):  
Mild Steel ◽  
Corrosion Protection ◽  
Sol Gel ◽  
Epoxy Coating ◽  
Surface Modified

In this study, corrosion protection of epoxy coating containing surface modified nano-zirconia was evaluated and compared to that containing unmodified nano-zirconia.

scholarly journals The influence of thin benzoate-doped polyaniline coatings on corrosion protection of mild steel in different environments

2013 ◽  
Vol 76 (4) ◽  
pp. 670-676 ◽  
Author(s):  
Ali R. Elkais ◽  
Milica M. Gvozdenović ◽  
Branimir Z. Jugović ◽  
Branimir N. Grgur
Keyword(s):  
Mild Steel ◽  
Corrosion Protection ◽  
Doped Polyaniline

The effect of sol–gel surface modified silver nanoparticles on the protective properties of the epoxy coating

RSC Advances ◽  
2016 ◽  
Vol 6 (23) ◽  
pp. 18996-19006 ◽  
Author(s):  
Alireza Ghazizadeh ◽  
Seyyed Arash Haddadi ◽  
Mohammad Mahdavian
Keyword(s):  
Silver Nanoparticles ◽  
Mild Steel ◽  
Corrosion Protection ◽  
Sol Gel ◽  
Epoxy Coating ◽  
Protective Properties ◽  
Surface Modified ◽  
Effect Of Surface

In this study, the effect of surface modified silver nanoparticles on the corrosion protection of an epoxy coating on mild steel was studied.

A new strategy for long-term smart corrosion protection of Q235 carbon steel using polyaniline nanofiber covalently linking with modified GO as reinforcement of epoxy coating

CORROSION ◽  
10.5006/3814 ◽  
2021 ◽  
Author(s):  
Fengjuan Xiao ◽  
Cheng Qian ◽  
Meng Wang ◽  
Xuefei Zhang ◽  
yan lu
Keyword(s):  
Carbon Steel ◽  
Corrosion Protection ◽  
Steel Surface ◽  
Covalent Binding ◽  
Synthesis Method ◽  
Epoxy Coating ◽  
Ammonium Bromide ◽  
Modified Graphene Oxide ◽  
Waterborne Epoxy ◽  
Polyaniline Nanofiber

Polyaniline nanofiber (PANI-f) was covalently linked with cetyltrimethyl ammonium bromide (CTAB) modified graphene oxide nanosheets (CTGO) to fabricate a smart composite coating for corrosion protection of carbon steel. In the copolymerization process, CTAB served both as a modifier for the modification of GO and a dispersant for the preparation of polyaniline nanofibers. The prepared PANI-f can avoid the accelerated corrosion of steel by conventional synthesis method using hydrochloric acid as medium. The covalent binding between PANI-f and CTGO improved the compatibility of PANI-f-GO with the waterborne epoxy emulsion, which significantly enhance the hydrophobicity and anti-permeability of the coating. The PANI-f-GO waterborne epoxy coating exhibited excellent smart corrosion protection efficiency by catalyzing the formation of passivation film on steel surface. Molecular adsorption energy on Fe(110) and radial distribution function confirmed the chemical adsorption of the PANI-f-GO composite on the steel surface. The superior smart protective performance can be ascribed to the synergistic effects of PANI-f and CTGO.

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