Performance Research of Natural Mica Modified with Zirconium-Based Metal–Organic Frameworks for an Epoxy Resin Anti-Corrosion Coating
A new composite material made from mica and a metal–organic framework (MOF) has been developed to improve the anticorrosive capabilities of epoxy resin coatings. The layered mica was loaded with denser and more uniform UIO-66 nanoparticles after modifying the composite with polyethyleneimine (PEI)....
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/28/20/7106 |
| _version_ | 1797572797475586048 |
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| author | Lijuan Zhu Chun Feng Bokai Peng Xuezhi Hui Xiaofeng Bai Zongxue Yu |
| author_facet | Lijuan Zhu Chun Feng Bokai Peng Xuezhi Hui Xiaofeng Bai Zongxue Yu |
| author_sort | Lijuan Zhu |
| collection | DOAJ |
| description | A new composite material made from mica and a metal–organic framework (MOF) has been developed to improve the anticorrosive capabilities of epoxy resin coatings. The layered mica was loaded with denser and more uniform UIO-66 nanoparticles after modifying the composite with polyethyleneimine (PEI). The composites were used as fillers to prepare epoxy coatings that exhibited long-lasting active (labyrinth effect produced by mica) and passive (pH-sensitive release of corrosion inhibitors) corrosion protection. Settling experiments showed that polyethyleneimine improved the composites’ compatibility in epoxy resin. After being immersed in a 3.5 wt.% NaCl solution for 60 days, the adhesion of PMC–UIO@MBT/EP increases to 9.01 MPa, while the water absorption rate only reaches 2.57%. It indicates that the coating has good barrier properties and stability. After being soaked in a 3.5 wt.% NaCl solution for 60 days at pH = 7, PMC–UIO@MBT/EP exhibits high low-frequency impedance (8.30 × 10<sup>8</sup> Ω), as demonstrated by the electronic impedance spectrum (EIS). In addition, the coating also exhibited the highest low-frequency impedance after 30 days in 3.5 wt.% NaCl solution at pH = 11. |
| first_indexed | 2024-03-10T21:00:59Z |
| format | Article |
| id | doaj.art-c123ea8785c340ed9dbe2926da9e3fd8 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T21:00:59Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-c123ea8785c340ed9dbe2926da9e3fd82023-11-19T17:32:50ZengMDPI AGMolecules1420-30492023-10-012820710610.3390/molecules28207106Performance Research of Natural Mica Modified with Zirconium-Based Metal–Organic Frameworks for an Epoxy Resin Anti-Corrosion CoatingLijuan Zhu0Chun Feng1Bokai Peng2Xuezhi Hui3Xiaofeng Bai4Zongxue Yu5Tubular Goods Research Institute, China National Petroleum Corporation, Xi’an 710077, ChinaTubular Goods Research Institute, China National Petroleum Corporation, Xi’an 710077, ChinaSchool of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, ChinaKey Laboratory of Petroleum Tubular Goods and Equipment Quality Safety for State Market Regulation, Xi’an 710077, ChinaTubular Goods Research Institute, China National Petroleum Corporation, Xi’an 710077, ChinaSchool of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, ChinaA new composite material made from mica and a metal–organic framework (MOF) has been developed to improve the anticorrosive capabilities of epoxy resin coatings. The layered mica was loaded with denser and more uniform UIO-66 nanoparticles after modifying the composite with polyethyleneimine (PEI). The composites were used as fillers to prepare epoxy coatings that exhibited long-lasting active (labyrinth effect produced by mica) and passive (pH-sensitive release of corrosion inhibitors) corrosion protection. Settling experiments showed that polyethyleneimine improved the composites’ compatibility in epoxy resin. After being immersed in a 3.5 wt.% NaCl solution for 60 days, the adhesion of PMC–UIO@MBT/EP increases to 9.01 MPa, while the water absorption rate only reaches 2.57%. It indicates that the coating has good barrier properties and stability. After being soaked in a 3.5 wt.% NaCl solution for 60 days at pH = 7, PMC–UIO@MBT/EP exhibits high low-frequency impedance (8.30 × 10<sup>8</sup> Ω), as demonstrated by the electronic impedance spectrum (EIS). In addition, the coating also exhibited the highest low-frequency impedance after 30 days in 3.5 wt.% NaCl solution at pH = 11.https://www.mdpi.com/1420-3049/28/20/7106micapolyethyleneimineepoxy resinmetal–organic frameworkanticorrosion coating |
| spellingShingle | Lijuan Zhu Chun Feng Bokai Peng Xuezhi Hui Xiaofeng Bai Zongxue Yu Performance Research of Natural Mica Modified with Zirconium-Based Metal–Organic Frameworks for an Epoxy Resin Anti-Corrosion Coating Molecules mica polyethyleneimine epoxy resin metal–organic framework anticorrosion coating |
| title | Performance Research of Natural Mica Modified with Zirconium-Based Metal–Organic Frameworks for an Epoxy Resin Anti-Corrosion Coating |
| title_full | Performance Research of Natural Mica Modified with Zirconium-Based Metal–Organic Frameworks for an Epoxy Resin Anti-Corrosion Coating |
| title_fullStr | Performance Research of Natural Mica Modified with Zirconium-Based Metal–Organic Frameworks for an Epoxy Resin Anti-Corrosion Coating |
| title_full_unstemmed | Performance Research of Natural Mica Modified with Zirconium-Based Metal–Organic Frameworks for an Epoxy Resin Anti-Corrosion Coating |
| title_short | Performance Research of Natural Mica Modified with Zirconium-Based Metal–Organic Frameworks for an Epoxy Resin Anti-Corrosion Coating |
| title_sort | performance research of natural mica modified with zirconium based metal organic frameworks for an epoxy resin anti corrosion coating |
| topic | mica polyethyleneimine epoxy resin metal–organic framework anticorrosion coating |
| url | https://www.mdpi.com/1420-3049/28/20/7106 |
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