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Protective and Flame-Retardant Bifunctional Epoxy-Based Nanocomposite Coating by Intercomponent Synergy between Modified CaAl-LDH and rGO.
Murtaza, Hassan; Zhao, Jingmao; Tabish, Mohammad; Wang, Jingbao; Mubeen, Muhammad; Zhang, Jingfan; Zhang, Sheng; Fan, Baomin.
Afiliación
  • Murtaza H; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
  • Zhao J; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
  • Tabish M; Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing 100029, China.
  • Wang J; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
  • Mubeen M; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
  • Zhang J; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
  • Zhang S; State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
  • Fan B; State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
ACS Appl Mater Interfaces ; 16(10): 13114-13131, 2024 Mar 13.
Article en En | MEDLINE | ID: mdl-38427459
ABSTRACT
Extensive utilization in various settings poses extra requirements of coatings beyond just anticorrosion properties. Herein, 8-hydroxyquinoline (8-HQ) intercalated CaAl-based layered double hydroxide (CaAl-8HQ-LDH) was loaded on reduced GO (rGO) through a one-pot hydrothermal reaction, which was employed as the nanofiller endowing the epoxy (EP/CaAl-8HQ LDH@rGO) with excellent flame-retardancy while ensuring efficient protection for mild steel. Results of electrochemical impedance spectroscopy (EIS) demonstrated the durability of the EP/CaAl-8HQ LDH@rGO-coated specimen, with the impedance at the lowest frequency (|Z|0.01Hz) maintained as 1.84 × 1010 Ω cm2 after 120 days of immersion in a 3.5 wt % NaCl solution. Even for the scratched EP/CaAl-8HQ LDH@rGO system, only a slight decline in |Z|0.01Hz was observed during 180 h of exposure to the NaCl solution, indicating a self-healing feature supported by salt spray tests. UL-94 burning tests revealed the V-0 rating for EP/CaAl-8HQ LDH@rGO with improved thermostability. Strong physical barrier from two-dimensional rGO and the release of 8-HQ from LDH interlayers accounted for the anticorrosive and self-healing properties. However, O2-concentration dilution and charring-layer promotion governed the flame-retardant behavior of the nanocomposite coating. The intercomponent synergy of nanofillers achieved in this work may provide a useful reference for designing multifunctional coatings.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos