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

scholarly journals Evaluation of the anticorrosion of waterborne epoxy coatings containing cerium salt-activated ceria nanoparticles deposited onto carbon steel substrates

2018 ◽  
Vol 56 (3B) ◽  
pp. 96
Author(s):  
Anh Son Nguyen ◽  
Thuy Duong Nguyen ◽  
Thu Thuy Thai
Keyword(s):  
Carbon Steel ◽  
Corrosion Protection ◽  
Salt Spray ◽  
Ceo2 Nanoparticles ◽  
Ceria Nanoparticles ◽  
Epoxy Coatings ◽  
Artificial Defect ◽  
Waterborne Epoxy ◽  
Cerium Salt ◽  
Steel Substrates

The presence work investigates the corrosion protection of waterborne epoxy coatings containing CeO2 nanoparticles activated with cerium salt for the carbon steel substrates. First, the dispersion of activated nanoparticles in the epoxy matrix was observed by field emission scanning electron microscopy (FESEM). The electrochemical impedance spectroscopy (EIS) was carried out to evaluate the role of the activated-CeO2 nanoparticles in the organic coatings immersed in a 0.5 M NaCl solution. Thus, the effect of the cerium ion activated ceria nanoparticles on the coatings presented the artificial defect in the aggressive environment was examined via salt spray test. Complementary studies were performed using the cross-cut and pull-off test to assess the adherence properties of the samples. Results revealed that the presence of activated-CeO2 nanoparticles enhanced corrosion protection properties of waterborne epoxy coating without losing adherence properties.

Microcapsule/silica dual-fillers for self-healing, self-reporting and corrosion protection properties of waterborne epoxy coatings

2021 ◽  
Vol 159 ◽  
pp. 106394
Author(s):  
Zhenglin Tao ◽  
Jincan Cui ◽  
Hanxun Qiu ◽  
Junhe Yang ◽  
Shanglin Gao ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Self Healing ◽  
Epoxy Coatings ◽  
Waterborne Epoxy

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

Phytic acid doped polyaniline containing epoxy coatings for corrosion protection of Q235 carbon steel

2017 ◽  
Vol 419 ◽  
pp. 826-837 ◽  
Author(s):  
Yongsheng Hao ◽  
Luqman Abdullahi Sani ◽  
Tiejun Ge ◽  
Qinghong Fang
Keyword(s):  
Carbon Steel ◽  
Phytic Acid ◽  
Corrosion Protection ◽  
Epoxy Coatings ◽  
Q235 Carbon Steel ◽  
Doped Polyaniline

scholarly journals Protection of Mild Steel by Waterborne Epoxy Coatings Incorporation of Polypyrrole Nanowires/Graphene Nanocomposites

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1998 ◽  
Author(s):  
Yang Ding ◽  
Jiang Zhong ◽  
Ping Xie ◽  
Jinchuang Rong ◽  
Huifang Zhu ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Electrochemical Impedance ◽  
In Situ Polymerization ◽  
Barrier Properties ◽  
Nanocomposite Coating ◽  
Open Circuit ◽  
Epoxy Coatings ◽  
Graphene Nanocomposites ◽  
Polypyrrole Nanowires ◽  
Waterborne Epoxy

Polypyrrole nanowires/graphene (PPyNG) nanocomposites as anticorrosive fillers were prepared by in situ polymerization in order to improve the anticorrosion performance of waterborne epoxy coatings. Field emission scanning electron microscope (FESEM) and Fourier transform infrared spectroscopy (FTIR) characterized the morphologies and structures of the synthesized PPyNG. The polypyrrole nanowires with about 50 nm in diameter were obtained. Conjugation length of PPy was increased with the addition of graphene. Open circuit potential (OCP) measurements, Tafel polarization curves, and electrochemical impedance spectroscopy (EIS) using an electrochemical workstation evaluated the anticorrosion properties of the waterborne epoxy/PPyNG coatings (EPPyNG). The studied nanocomposite coating possessed superior corrosion protection performance when the graphene content of the filler was 2 wt %. Its corrosion rate was about 100 times lower than that of neat epoxy coating. The higher barrier properties of nanocomposite coating and passivation effect of polypyrrole nanowires were beneficial in corrosion protection.

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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