Highly fluorinated F-APP-TiO2 particle with hierarchical core-shell structure and its application in multifunctional superamphiphobic surface: Mechanical robustness, self-recovery and flame retardancy.

Functional superamphiphobic coatings have garnered massive concern due to their promising application in oil transportation and anti-contamination, which call for the requirements of mechanical stability and flame retardancy. Herein, a novel superamphiphobic PVT/F-APP-TiO2 hybrid coating with excellent mechanical stability and flame retardancy was fabricated using fluorinated PVT polymer adhesive and highly fluorinated ammonium polyphosphate/TiO2 (F-APP-TiO2) particles with hierarchical core-shell structure. The synthetic mechanism, surface structure, chemical composition of the F-APP-TiO2 particles were investigated by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), respectively. The PVT/F-APP-TiO2 coatings exhibited excellent superamphiphobicity, anticontamination and self-cleaning property. Good mechanical stability of PVT/F-APP-TiO2 coatings was verified by mechical damage tests including sand paper abrasion, tape-peeling and water-impacting tests. Further, the PVT/F-APP-TiO2 coatings showed excellent flame retardancy and self-recovery ability. The PVT/F-APP-TiO2 coatings with versatile abilities exhibited promising potential to achieve numerous applications in water-oil proof, fireproof and oil transportation materials.