Construction of a smart active/barrier anti-corrosion system based on epoxy-ester/zinc intercalated kaolin nanocontainer for steel substrate. (30th June 2020)

• Record Type: Journal Article
• Authors: Majd, Mehdi Tabatabaei; Davoudi, Mahsa; Ramezanzadeh, Mohammad; Ghasemi, Ebrahim; Ramezanzadeh, Bahram; Mahdavian, Mohammad
• Is Part Of: Construction & building materials. Volume 247(2020)
• Publication Date: 2020-06-30
• Subjects: Zinc intercalated kaolin -- Nanocontainer -- Epoxy ester -- Protective coating -- EIS -- DMTA; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2020.118555
• Languages: English
• ISSNs: 0950-0618

Abstract

Graphical abstract: Highlights: The self-healing ability of zinc intercalated kaolin (K) nanocontainer was studied. The positive impact of KZn on the epoxy coating protection properties was shown. The KZn had a significant impact on the coating viscoelastic properties improvement. Abstract: In this study, for the first time, the corrosion mitigation ability of zinc intercalated kaolin (K) as an inorganic and cost-effective nanocontainer was studied. The impact of kaolin modification by zinc ions on the epoxy ester coating corrosion protection ability was surveyed by EIS (Electrochemical impedance spectroscopy) and salt spray tests. XRD (X-Ray diffraction) results showed that feeding the kaolin particles by zinc ions increased the interlayer space of the galleries. The R ct (charge transfer resistance) values obtained from the EIS analysis of the scratched coating were found to be around 9800, 34693, and 52188 Ω cm 2 for neat, K, and KZn (modified K particles with Zn ions) epoxy coated samples after 6 h from immersion. The physical and thermal-mechanical properties of the epoxy ester composite coating reinforced with. KZn particles were assessed by DMTA and tensile tests. Results proved that the addition of modified kaolin particles had reinforced the mechanical characteristics, including the ultimate strength and Young's modulus.