A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sepiolite modified with phosphonium ionic liquids as anticorrosive pigment for epoxy coatings
https://orcid.org/0000-0002-1273-7574
Abstract The performance of sepiolite modified with different phosphonium-based ionic liquids (SepIL) as anti-corrosive pigment for epoxy resin (ER) coatings were discussed in this paper. The ionic liquids (IL) used to functionalize Sep clay mineral included trihexyl-(tetradecyl)phosphonium bistriflimide (IL1) and ethyl-tri(butyl)-phosphonium diethylphosphate (IL2) as commercial IL and the synthesized 11-carboxyundecyl-(triphenyl)-phosphonium bromide (IL3). All SepIL samples were characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), elemental analysis (CHN) and X-ray diffraction (XRD). The effect of the incorporation of Sep and SepIL on the rheological properties of the ER-based dispersions and on anticorrosion properties of epoxy networks cured with isophorone diamine was investigated. The ER-based coatings loaded with Sep modified with different ionic liquids presented enhanced the anticorrosive properties with outstanding barrier properties against the diffusion of the electrolyte solution, as indicated by electrochemical impedance spectroscopy (EIS). The superior corrosion resistance of ER loaded with SepIL was also kept with scratched coating, due to the inhibition activity of the ionic liquid against corrosion process.
Highlights Sepiolite successfully functionalized with phosphonium-based ionic liquids; Sep modified with IL improved corrosion resistance of epoxy coatings; Unscratched and scratched coatings containing 1% SepIL exhibit excellent anti-corrosion performance.
Sepiolite modified with phosphonium ionic liquids as anticorrosive pigment for epoxy coatings
https://orcid.org/0000-0002-1273-7574
Abstract The performance of sepiolite modified with different phosphonium-based ionic liquids (SepIL) as anti-corrosive pigment for epoxy resin (ER) coatings were discussed in this paper. The ionic liquids (IL) used to functionalize Sep clay mineral included trihexyl-(tetradecyl)phosphonium bistriflimide (IL1) and ethyl-tri(butyl)-phosphonium diethylphosphate (IL2) as commercial IL and the synthesized 11-carboxyundecyl-(triphenyl)-phosphonium bromide (IL3). All SepIL samples were characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), elemental analysis (CHN) and X-ray diffraction (XRD). The effect of the incorporation of Sep and SepIL on the rheological properties of the ER-based dispersions and on anticorrosion properties of epoxy networks cured with isophorone diamine was investigated. The ER-based coatings loaded with Sep modified with different ionic liquids presented enhanced the anticorrosive properties with outstanding barrier properties against the diffusion of the electrolyte solution, as indicated by electrochemical impedance spectroscopy (EIS). The superior corrosion resistance of ER loaded with SepIL was also kept with scratched coating, due to the inhibition activity of the ionic liquid against corrosion process.
Highlights Sepiolite successfully functionalized with phosphonium-based ionic liquids; Sep modified with IL improved corrosion resistance of epoxy coatings; Unscratched and scratched coatings containing 1% SepIL exhibit excellent anti-corrosion performance.
Sepiolite modified with phosphonium ionic liquids as anticorrosive pigment for epoxy coatings
https://orcid.org/0000-0002-1273-7574
Abstract The performance of sepiolite modified with different phosphonium-based ionic liquids (SepIL) as anti-corrosive pigment for epoxy resin (ER) coatings were discussed in this paper. The ionic liquids (IL) used to functionalize Sep clay mineral included trihexyl-(tetradecyl)phosphonium bistriflimide (IL1) and ethyl-tri(butyl)-phosphonium diethylphosphate (IL2) as commercial IL and the synthesized 11-carboxyundecyl-(triphenyl)-phosphonium bromide (IL3). All SepIL samples were characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), elemental analysis (CHN) and X-ray diffraction (XRD). The effect of the incorporation of Sep and SepIL on the rheological properties of the ER-based dispersions and on anticorrosion properties of epoxy networks cured with isophorone diamine was investigated. The ER-based coatings loaded with Sep modified with different ionic liquids presented enhanced the anticorrosive properties with outstanding barrier properties against the diffusion of the electrolyte solution, as indicated by electrochemical impedance spectroscopy (EIS). The superior corrosion resistance of ER loaded with SepIL was also kept with scratched coating, due to the inhibition activity of the ionic liquid against corrosion process.
Highlights Sepiolite successfully functionalized with phosphonium-based ionic liquids; Sep modified with IL improved corrosion resistance of epoxy coatings; Unscratched and scratched coatings containing 1% SepIL exhibit excellent anti-corrosion performance.
Sepiolite modified with phosphonium ionic liquids as anticorrosive pigment for epoxy coatings
Henriques, Ruan R. (author) / Soares, Bluma G. (author)
Applied Clay Science ; 200
2020-10-13
Article (Journal)
Electronic Resource
English
Effect of Nano Al Pigment on the Anticorrosive Performance of Waterborne Epoxy Coatings
| British Library Online Contents | 2007
Anticorrosive Properties of Epoxy/Polyurethane IPNs Coatings Modified by Organic Montmorillonite
| British Library Online Contents | 2011
A new approch to sepiolite dispersion by treatment with ionic liquids
| Elsevier | 2017
Multiphase anticorrosive pigment Precor Mo-W
| British Library Online Contents | 1995
Effect of Polyaniline on Anticorrosive Performance of Epoxy Coatings
| British Library Online Contents | 2009