Hybrid 3D/2D NH2-UIO-66/h-BN nanostructures for smart epoxy coatings with enhanced anti-corrosion and mechanical performance
This study introduces an innovative epoxy coating system enhanced with 2D hexagonal boron nitride (h-BN) nanosheets, commonly called white graphene. These nanosheets have been surface-modified with APTES and UIO-66-NH2 (NH2-UIO) particles to improve nanoparticle dispersion within the epoxy matrix. T...
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Elsevier
2025-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425015236 |
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| author | Ali Dashan Fatemeh Norouzi Mohammad Ramezanzadeh Bahram Ramezanzadeh |
| author_facet | Ali Dashan Fatemeh Norouzi Mohammad Ramezanzadeh Bahram Ramezanzadeh |
| author_sort | Ali Dashan |
| collection | DOAJ |
| description | This study introduces an innovative epoxy coating system enhanced with 2D hexagonal boron nitride (h-BN) nanosheets, commonly called white graphene. These nanosheets have been surface-modified with APTES and UIO-66-NH2 (NH2-UIO) particles to improve nanoparticle dispersion within the epoxy matrix. The NH2-UIO particles also allow for incorporating green mono-sodium glutamate-zinc inhibitors within their porosity, providing both active corrosion protection and enhanced mechanical properties. The structure, composition, and surface chemistry of the nanomaterials were characterized using XRD, FT-IR, TGA, XPS, BET, TEM, and FE-SEM/EDAX-Mapping techniques. The anti-corrosion performance was assessed through EIS, pull-off adhesion, cathodic disbondment, and ICP analysis. Thermo-mechanical behavior was evaluated using DMTA, tensile testing, and FE-SEM of the fracture surfaces. EIS tests revealed that the nanoparticle-filled coatings exhibited active corrosion protection. The scratched coating exhibited an impedance of 128.22 kΩ cm2 after 3 h immersion, an improvement of 104.8 % compared to the control's 62.59 kΩ cm2, highlighting its efficient active protection. Over a longer period, the nanoparticle-filled coatings maintained a resistance of 4.73 GΩ cm2 after 70 days of exposure to saline media, significantly outperforming the control sample, which displayed a resistance of just 0.011 GΩ cm2. Adhesion tests, including pull-off and cathodic disbondment, showed enhanced adhesion in the modified coatings, with a 77 % reduction in adhesion loss and 42 % less disbondment compared to uninhibited samples. Additionally, the incorporation of nanoparticles resulted in substantial improvements in mechanical performance, such as increased hardness, Young's modulus, tensile strength, and higher cross-link density. |
| format | Article |
| id | doaj-art-3b47c0acc0ea4aa1a4e66e156594d290 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-3b47c0acc0ea4aa1a4e66e156594d2902025-08-20T03:32:14ZengElsevierJournal of Materials Research and Technology2238-78542025-07-01372084210410.1016/j.jmrt.2025.06.101Hybrid 3D/2D NH2-UIO-66/h-BN nanostructures for smart epoxy coatings with enhanced anti-corrosion and mechanical performanceAli Dashan0Fatemeh Norouzi1Mohammad Ramezanzadeh2Bahram Ramezanzadeh3Department of Surface Coatings and Corrosion, Institute for Color Science and Technology, P.O. Box 16765-654, Tehran, IranDepartment of Surface Coatings and Corrosion, Institute for Color Science and Technology, P.O. Box 16765-654, Tehran, Iran; Department of Polymer, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, IranIran Polymer and Petrochemical Institute, P.O. Box 14965-115, Tehran, Iran; Corresponding author.Department of Surface Coatings and Corrosion, Institute for Color Science and Technology, P.O. Box 16765-654, Tehran, Iran; Corresponding author.This study introduces an innovative epoxy coating system enhanced with 2D hexagonal boron nitride (h-BN) nanosheets, commonly called white graphene. These nanosheets have been surface-modified with APTES and UIO-66-NH2 (NH2-UIO) particles to improve nanoparticle dispersion within the epoxy matrix. The NH2-UIO particles also allow for incorporating green mono-sodium glutamate-zinc inhibitors within their porosity, providing both active corrosion protection and enhanced mechanical properties. The structure, composition, and surface chemistry of the nanomaterials were characterized using XRD, FT-IR, TGA, XPS, BET, TEM, and FE-SEM/EDAX-Mapping techniques. The anti-corrosion performance was assessed through EIS, pull-off adhesion, cathodic disbondment, and ICP analysis. Thermo-mechanical behavior was evaluated using DMTA, tensile testing, and FE-SEM of the fracture surfaces. EIS tests revealed that the nanoparticle-filled coatings exhibited active corrosion protection. The scratched coating exhibited an impedance of 128.22 kΩ cm2 after 3 h immersion, an improvement of 104.8 % compared to the control's 62.59 kΩ cm2, highlighting its efficient active protection. Over a longer period, the nanoparticle-filled coatings maintained a resistance of 4.73 GΩ cm2 after 70 days of exposure to saline media, significantly outperforming the control sample, which displayed a resistance of just 0.011 GΩ cm2. Adhesion tests, including pull-off and cathodic disbondment, showed enhanced adhesion in the modified coatings, with a 77 % reduction in adhesion loss and 42 % less disbondment compared to uninhibited samples. Additionally, the incorporation of nanoparticles resulted in substantial improvements in mechanical performance, such as increased hardness, Young's modulus, tensile strength, and higher cross-link density.http://www.sciencedirect.com/science/article/pii/S2238785425015236Hexagonal boron nitrideUIO-66-NH2Epoxy coatingCorrosionZr-MOF |
| spellingShingle | Ali Dashan Fatemeh Norouzi Mohammad Ramezanzadeh Bahram Ramezanzadeh Hybrid 3D/2D NH2-UIO-66/h-BN nanostructures for smart epoxy coatings with enhanced anti-corrosion and mechanical performance Journal of Materials Research and Technology Hexagonal boron nitride UIO-66-NH2 Epoxy coating Corrosion Zr-MOF |
| title | Hybrid 3D/2D NH2-UIO-66/h-BN nanostructures for smart epoxy coatings with enhanced anti-corrosion and mechanical performance |
| title_full | Hybrid 3D/2D NH2-UIO-66/h-BN nanostructures for smart epoxy coatings with enhanced anti-corrosion and mechanical performance |
| title_fullStr | Hybrid 3D/2D NH2-UIO-66/h-BN nanostructures for smart epoxy coatings with enhanced anti-corrosion and mechanical performance |
| title_full_unstemmed | Hybrid 3D/2D NH2-UIO-66/h-BN nanostructures for smart epoxy coatings with enhanced anti-corrosion and mechanical performance |
| title_short | Hybrid 3D/2D NH2-UIO-66/h-BN nanostructures for smart epoxy coatings with enhanced anti-corrosion and mechanical performance |
| title_sort | hybrid 3d 2d nh2 uio 66 h bn nanostructures for smart epoxy coatings with enhanced anti corrosion and mechanical performance |
| topic | Hexagonal boron nitride UIO-66-NH2 Epoxy coating Corrosion Zr-MOF |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425015236 |
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