Anticorrosion Coating with Heterogeneous Assembly of Nanofillers Modulated by a Magnetic Field

Lu, Pingli; Fu, Xue; Li, Xin; Xu, Li; Ye, Fan; Zhao, Jie; Tian, Limei; Sun, Jiyu; Ren, Luquan

doi:10.1021/acsami.2c19132

Cited by 25 publications

(1 citation statement)

References 66 publications

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“…The two-dimensional layered structure of LDH nanosheets can also fill gaps in the coating, thus reducing the amount of defects and improving the self-healing performance of the coating . Therefore, some researchers have loaded anions with a retarding effect between LDH layers to form composite coatings with EP for enhanced anticorrosion performance. , …”

Section: Introductionmentioning

confidence: 99%

Incorporation of Nanometer-Sized Layered Double Hydroxide with Anions that Improve the Corrosion Resistance of Epoxy Polymer

Li,

Cui,

et al. 2023

ACS Appl. Nano Mater.

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Layered double hydroxide (LDH) has been widely used as a two-dimensional nanomaterial in the corrosion protection of epoxy (EP) coatings due to its physical barrier properties and excellent ion exchange capacity. However, conventional LDH with an interlayer of NO3 – (LDH-NO3) is prone to failure in corrosive environments due to its limited ion exchange ability. It is demonstrated in this work that, compared to an EP coating containing LDH-NO3 (EP/LDH-NO3), EP coatings containing ZnAl-LDH-MoO4 2– (EP/LDH-MoO4) and ZnAl-LDH-PO4 3– (EP/LDH-PO4) have stronger corrosion resistance and self-healing abilities. This is attributed to the trapping effect of corrosion anions between the LDH layers by the inhibitor ions, which prevents the direct contact of the corrosion anions with the substrate. In addition, the inhibitor ions can combine with metal ions from the substrate to form insoluble complexes in localized corrosion areas, thus blocking further deterioration. Furthermore, EP/LDH-MoO4 has superior corrosion resistance and self-healing properties compared to EP/LDH-PO4, as the more active MoO4 2– anions have a stronger ion exchange ability than PO4 3–. This study not only highlights the potential of inhibitor ions inserted in LDH layers for anticorrosion but also paves the way toward the design of more effective EP-based coatings.

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Section: Introductionmentioning

confidence: 99%

Incorporation of Nanometer-Sized Layered Double Hydroxide with Anions that Improve the Corrosion Resistance of Epoxy Polymer

Li,

Cui,

et al. 2023

ACS Appl. Nano Mater.

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Microfluidic Electrospinning Core–Shell Nanofibers for Anti‐Corrosion Coatings With Efficient Self‐Healing Properties

Tang,

Ji,

Wei

et al. 2024

Advanced Science

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Self‐healing materials have been extensively explored in metal anti‐corrosion fields. However, improving the self‐healing efficiency remains a significant work that severely limits their further development. Here, a strategy to fabricate anti‐corrosion coatings with efficient self‐healing properties based on microfluidic electrospinning technologies and UV‐curable healing agents is reported. The damaged composite coating contains core–shell nanofibers that can be completely healed within only 30 min, indicating an outstanding healing efficiency. The corrosion current density (Icorr) of the composite coatings containing core–shell nanofibers (abbreviated as composite coatings) is lower than the coatings without any fibers (abbreviated as pure resin coatings) during the test of repeated damage and healing cycles, showing superior resistance to corrosion and repeated self‐healing property. The composite coating has even better mechanical properties such as tensile strength, bending strength, and impact strength than the pure resin coating, which are explained by simulating the deformation process. These excellent properties greatly improve the practicability of self‐healing coatings in the application of anti‐corrosion, especially in some special fields.

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Dual‐Loading Strategy Constructing Smart Coatings With Novel Hydroxyapatite/ZIF‐8 Composites

He,

Liu,

Bao

et al. 2024

J of Applied Polymer Sci

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The marine environment with high humidity and salinity poses higher requests on the service life of traditional polymer coatings therefore, various fillers have been developed for modification. Smart coatings built by fillers that possesses passive barrier and active self‐healing properties show considerable prospects in metal protection. Herein, we applied a novel dual‐loading strategy to design tannic acid (TA) decorating hydroxyapatite (HAp)/zeolite imidazole framework (ZIF‐8) loading 2‐amino benzothiazole (2‐ABT) composite fillers. The epoxy coating (EP) doped with ABT@ZIF8‐HAp@TA (AZHT/EP) presented hydrophobicity and improved mechanical performance on Q215 steel. Moreover, the |Z|f=0.01Hz of AZHT/EP after immersion in saline water for 28 days (6.24 × 1010 Ω•cm2) is higher than pure EPs with two magnitudes. The anticorrosion mechanism of the AZHT/EP was proposed based on the analysis of corrosion products. To conclude, the dual‐loading strategy has considerable potential in designing smart coatings for corrosion protection in harsh environments.

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Anticorrosion Coating with Heterogeneous Assembly of Nanofillers Modulated by a Magnetic Field

Cited by 25 publications

References 66 publications

Incorporation of Nanometer-Sized Layered Double Hydroxide with Anions that Improve the Corrosion Resistance of Epoxy Polymer

Incorporation of Nanometer-Sized Layered Double Hydroxide with Anions that Improve the Corrosion Resistance of Epoxy Polymer

Microfluidic Electrospinning Core–Shell Nanofibers for Anti‐Corrosion Coatings With Efficient Self‐Healing Properties

Dual‐Loading Strategy Constructing Smart Coatings With Novel Hydroxyapatite/ZIF‐8 Composites

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