PMID- 38427459 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240314 IS - 1944-8252 (Electronic) IS - 1944-8244 (Linking) VI - 16 IP - 10 DP - 2024 Mar 13 TI - Protective and Flame-Retardant Bifunctional Epoxy-Based Nanocomposite Coating by Intercomponent Synergy between Modified CaAl-LDH and rGO. PG - 13114-13131 LID - 10.1021/acsami.3c19245 [doi] AB - 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 x 10(10) Omega cm(2) 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, O(2)-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. FAU - Murtaza, Hassan AU - Murtaza H AD - College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China. FAU - Zhao, Jingmao AU - Zhao J AUID- ORCID: 0000-0002-9197-4868 AD - College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China. AD - Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing 100029, China. FAU - Tabish, Mohammad AU - Tabish M AD - College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China. FAU - Wang, Jingbao AU - Wang J AD - College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China. FAU - Mubeen, Muhammad AU - Mubeen M AD - College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China. FAU - Zhang, Jingfan AU - Zhang J AD - State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China. FAU - Zhang, Sheng AU - Zhang S AUID- ORCID: 0000-0001-7131-6246 AD - State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China. FAU - Fan, Baomin AU - Fan B AUID- ORCID: 0000-0002-0430-5712 AD - College of Chemical and Materials Engineering, Beijing Technology and Business University, Beijing 100029, China. LA - eng PT - Journal Article DEP - 20240301 PL - United States TA - ACS Appl Mater Interfaces JT - ACS applied materials & interfaces JID - 101504991 SB - IM OTO - NOTNLM OT - corrosion inhibition OT - flame-retardant OT - layered double hydroxide OT - nanocomposites OT - pristine epoxy (EP) OT - rGO EDAT- 2024/03/01 18:43 MHDA- 2024/03/01 18:44 CRDT- 2024/03/01 12:22 PHST- 2024/03/01 18:44 [medline] PHST- 2024/03/01 18:43 [pubmed] PHST- 2024/03/01 12:22 [entrez] AID - 10.1021/acsami.3c19245 [doi] PST - ppublish SO - ACS Appl Mater Interfaces. 2024 Mar 13;16(10):13114-13131. doi: 10.1021/acsami.3c19245. Epub 2024 Mar 1.