Superamphiphobic coatings, able to repelling each water and low-surface-tension liquids, maintain immense potential for functions in self-cleaning, anti-fouling, and anti-icing. Nevertheless, their widespread adoption is hindered by reliance on natural solvents, poor mechanical sturdiness, and sophisticated fabrication processes. Herein, totally waterborne superamphiphobic coatings are developed utilizing waterborne polyurethane and fluorinated polysiloxane-modified silica nanoparticles (F-POS@SiO2). The F-POS@SiO2 dispersion is synthesized by way of acid-catalyzed hydrolysis and condensation of silanes in water mediated by fluorinated surfactants, eliminating the necessity for any natural solvents. When mixed with waterborne polyurethane and utilized sequentially by way of easy spray-coating, the ensuing coatings exhibit hierarchical micro-/nanostructures and low floor vitality. These options collectively endow the coatings with wonderful static and dynamic repellency towards water and oils, sturdy mechanical sturdiness, chemical resistance, thermal and UV stability, and anti-icing conduct. The coatings preserve efficiency throughout a spread of substrates, providing a sustainable and scalable technique for fabricating superamphiphobic surfaces with broad sensible potential.
