BTA loaded in various CeO2 nanocontainers in epoxy coating for long-term anticorrosion of low carbon steel

Yang, Jingxia; Zou, Bingjie; Fang, Qing; Wang, Jinjie; Wang, Lidong

doi:10.1016/j.porgcoat.2022.107156

Cited by 8 publications

(3 citation statements)

References 47 publications

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Section: Sample Salt Spray Test Duration 0 H 50 H 100 H 150 Hmentioning

confidence: 99%

“…Coating doped with PANI@HNT-2-BTA Based on the EIS and salt spray tests, a tentative illustration of the corrosion inhibition mechanism is presented in Scheme 1. When a damage or defect appeared in the coating, the corrosive Clion promoted the oxidation of Fe to Fe 2+ [47,48]. At the same time, the large Coating doped with PANI@HNT-2-BTA coating infused with PANI@HNT-2 only started to corrode in the inscribed area after 100 h and corrosion became more apparent after 150 h. This coating demonstrated a certain limited ability to suppress the corrosion in the damaged area.…”

Section: Sample Salt Spray Test Duration 0 H 50 H 100 H 150 Hmentioning

confidence: 99%

“…Based on the EIS and salt spray tests, a tentative illustration of the corrosion inhibition mechanism is presented in Scheme 1. When a damage or defect appeared in the coating, the corrosive Cl − ion promoted the oxidation of Fe to Fe 2+ [47,48]. At the same time, the large surface area and intrinsic hydrophilicity of the HNTs could facilitate water molecule absorption, thus triggering the release of the hydrophilic BTA from the nanotubes [49].…”

Section: Salt Spray Test On the Scratched Coatingmentioning

confidence: 99%

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Improving the Protection Performance of Waterborne Coatings with a Corrosion Inhibitor Encapsulated in Polyaniline-Modified Halloysite Nanotubes

Liu,

Gao,

Wang

et al. 2023

Coatings

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Organic coatings provide an effective way to improve the corrosion resistance of metals. Traditional organic varnishes, however, either contain highly polluting or toxic components or lack self-healing ability. In this article, we report a feasible method of preparing polyaniline-modified halloysite nanotubes (PANI@HNTs). They were loaded with a corrosion inhibitor, benzotriazole (BTA), and were tested as multifunctional anticorrosion additives for environmentally friendly epoxy waterborne coatings. The PANI@HNTs were formed via the in situ polymerization of aniline in the presence of halloysites. The BTA loading was then carried out and reached up to 14.5 wt.%. The BTA retention ability of the PANI@HNTs was significantly improved in comparison to that of pure HNT. Electrochemical impedance spectroscopy (EIS) tests of the coatings immersed in a 3.5 wt.% NaCl solution showed that the barrier and corrosion inhibition effects were enhanced by two to four orders of magnitude with the incorporation of BTA-loaded PANI@HNTs. The salt spray tests on artificially scratched coatings revealed that the surfaces protected by varnishes doped with the BTA-loaded PANI@HNTs exhibited the lowest degree of corrosion compared to the control samples, illustrating the self-healing potential of the modified coatings.

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Section: Sample Salt Spray Test Duration 0 H 50 H 100 H 150 Hmentioning

confidence: 99%

Section: Sample Salt Spray Test Duration 0 H 50 H 100 H 150 Hmentioning

confidence: 99%

Section: Salt Spray Test On the Scratched Coatingmentioning

confidence: 99%

See 1 more Smart Citation

Improving the Protection Performance of Waterborne Coatings with a Corrosion Inhibitor Encapsulated in Polyaniline-Modified Halloysite Nanotubes

Liu,

Gao,

Wang

et al. 2023

Coatings

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Development of pH ‐ and Redox‐activated Self‐healing Coating

2024

Smart Protective Coatings for Corrosion Control

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A Multifunctional Coating with Active Corrosion Protection Through a Synergistic pH‐ and Thermal‐Responsive Mechanism

Ma,

Xu,

Fan

et al. 2024

Small

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This article aims to develop CeO2 nanocontainer‐constructed coating with a synergistic self‐healing and protective nature through a simple mechanical blending technique to manage metal corrosion. The proposed coating exhibits excellent corrosion resistance, which is primarily attributed to the combination of thermal‐driven healing and active corrosion inhibition. Paraffin wax and 2‐polybenzothiazole‐loaded CeO2 nanotubes (CeO2‐MBT) are directly doped into epoxy coating to perform such a multifunctional role. CeO2 nanocontainers and encapsulated corrosion inhibitor MBT can be released by pH triggers to achieve instant corrosion inhibition upon the surface of metal substrate. In addition, any physical defects in the coating are responsively repaired by heating incorporated paraffin wax to regain structural integrity and consequent barrier function. Corrosion protection efficiency remains sufficient even after ten cycles of damage and healing. Such a multiple‐functional coating strategy provides an alternative pathway toward efficient and sustainable performance to tackle corrosion‐related challenges of metal components in both short‐term and long‐term services.

show abstract

BTA loaded in various CeO2 nanocontainers in epoxy coating for long-term anticorrosion of low carbon steel

Cited by 8 publications

References 47 publications

Improving the Protection Performance of Waterborne Coatings with a Corrosion Inhibitor Encapsulated in Polyaniline-Modified Halloysite Nanotubes

Improving the Protection Performance of Waterborne Coatings with a Corrosion Inhibitor Encapsulated in Polyaniline-Modified Halloysite Nanotubes

Development of pH ‐ and Redox‐activated Self‐healing Coating

A Multifunctional Coating with Active Corrosion Protection Through a Synergistic pH‐ and Thermal‐Responsive Mechanism

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