Synergistic Corrosion Inhibition and UV Protection via TTA-Loaded LDH Nanocontainers in Epoxy Coatings
Source abstract
Abstract
To address the issue of metal corrosion in marine environments, we developed a nanofiller with corrosion resistance and UV absorption capabilities. This nanofiller is prepared using a coprecipitation hydrothermal method and consists of TTA intercalated into an LDH structure with an outer layer containing CeO2, forming a layered double hydroxide (LDH) sandwich structure nanocontainer. TTA can be successfully released in corrosive environments, and the filler exhibits excellent corrosion inhibition and interlayer ion exchange properties. Polarization curve analysis shows that the corrosion inhibition efficiency of MgAl-TTA LDH@CeO2 reaches 89.87%. After immersion in a corrosion solution for 60 days, the EP/MgAl-TTA LDH@CeO2 coating maintains a high impedance of 3.88 × 108 Ω·cm2 in the low-frequency region, which is 166 times that of the pure EP coating. Even after 240 h of UV aging, the impedance of the EP/MgAl-TTA LDH@CeO2 coating remains high at 3.10 × 108 Ω·cm2 (20,000 times higher than the pure EP coating). This significantly enhances the coating’s anti-aging and corrosion resistance, providing a feasible method for creating new long-lasting corrosion-resistant coatings in challenging environments.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Silicone and Siloxane Chemistry · Synthesis and properties of polymers
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
Zhejiang Tony Electronic Co., Ltd., Huzhou 313008, China
CNPC Tubular Goods Research Institute, Xi’an 710077, China
State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Xi’an 710077, China
Funding
Shaanxi Provincial Innovation Capacity Support Program · Analysis and Testing Center of Xi’an University of Architecture and Technology
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