Fabrication of active corrosion protection waterborne polyurethane coatings using cerium modified palygorskite nanocontainers

Abstract

The development of eco‐efficient and environmental friendly active anti‐corrosion coatings for metallic substrates represents a fundamental milestone in many engineering applications. Herein, a new type of active corrosion protection coating was successfully synthesized simply based on waterborne polyurethane (WPU) and nanocontainer of Ce3+ modified palygorskite (Ce‐PAL). Particularly, the nanocontainer of Ce‐PAL was achieved via a facile and green process by cation exchange in water. Inductively coupled plasma atomic emission spectrometry (ICP) revealed that Ce3+ had successfully incorporated into PAL nanofibers with a loading amount of 10.334 g/kg. The salt immersion test, electrochemical potentiodynamic measurements and electrochemical impedance spectroscopy (EIS) demonstrated that the incorporation of Ce‐PAL only with 2 wt% into WPU led to a significant improvement of their corrosion protection properties. Finally, according to the results of scanning electron microscopy with energy dispersive X‐ray spectroscopy, the active anti‐corrosion mechanism of Ce‐PAL/WPU coating was proposed.

Polyurethane and rare-earth materials: a review

“…Yin et al, 2021;R. Yu et al, 2017) Cerium (Ce) (A. Saadat-Monfared & Mohseni, 2014;Anand & Sivaramakrishna, 2021;Baig & Khan, 2015;Bose et al, 2022;Ferrel-Álvarez et al, 2017;Fu et al, 2016;Huang et al, 2022;Jaganathan et al, 2022;Jorcin et al, 2010;Joshi et al, 2022;Mani et al, 2022;Martineau & Shek, 2006;Mastouri Mansourabad et al, 2020;Mo et al, 2019;Nguyen et al, 2021;Nhiem et al, 2018;Ni et al, 2021;Palma-Ramírez et al, 2017;G.-F. Pan et al, 2022;Roitti et al, 2004;Saadat-Monfared et al, 2012;Saha et al, 2019;Samardžija et al, 2022;Unnithan et al, 2014;Xavier, 2021;Xie et al, 2021;) Liu et al, 2019;Mendes-Felipe et al, 2021;Yao et al, 2021)…”

“…Among the other physicochemical properties of interest that were analyzed in the articles categorized here, thermal resistance also stands out, studied by Xie et al (2021), X. Yu et al (2021), Mani et al (2022) and Joshi et al (2022), and corrosion resistance, verified by Mo et al (2019), Ni et al (2021), Samardžija et al (2022) and Huang et al (2022). Hardness, hydrophobicity and anticoagulant capacity were identified in some papers, while other miscellaneous characteristics had lesser occurrence, such as regeneration capacity, resistance to water absorption and abrasion, antifreeze property and flame retardants.…”

Recent Trends in Waterborne and Bio‐Based Polyurethane Coatings for Corrosion Protection

“…Immersion tests simply consist in soaking scratched or undamaged coated panels into aggressive media (such as 3.5 wt.% NaCl solution, strongly acidic or alkaline solutions). [47,80] Salt spray tests, instead, are carried out following standard procedures (such as ASTM B117 or ISO 9227). In both cases, visual inspection of the samples at different time intervals can suggest different behaviors in terms of anticorrosion ability of the coating.…”

Modification of ZSM‐5 zeolite nanoparticles by graphene oxide to improve anticorrosion properties of polyurethane coating

“…Corrosion of metallic structures is one of the most challenging problems especially from an industrial point of view 1–5 . Accordingly, organic coatings are commonly applied to safeguard metallic equipment in a corrosive media 6–9 .…”

“…Corrosion of metallic structures is one of the most challenging problems especially from an industrial point of view. [1][2][3][4][5] Accordingly, organic coatings are commonly applied to safeguard metallic equipment in a corrosive media. [6][7][8][9] Generally, organic coatings have an important role as a metal protector in the corrosive medium.…”