Abstract:
Using nano-ceramics as the physical support, the surface modification technology was employed to perform in-situ modification on the nano-ceramic framework and inorganic pigments (bismuth oxide, cuprous oxide, nickel hydroxide, nano-cobalt blue, and biochar), successfully constructing a hierarchical-structured nano-ceramic/inorganic pigment composite material. Through a spraying process, the flexible substrate was endowed with superwetting functionality. The prepared nano-ceramic/inorganic pigment composite coating exhibited superlyophobic properties against both 25℃ and 95℃ droplets, with contact angles exceeding 154° and rolling angles below 6°, while also demonstrating resistance to 95℃ hot contaminated liquids. Notably, the nano-ceramic/inorganic pigment composite coating incorporating biochar displayed superhydrophobicity toward hot liquids and anti-icing/deicing effects. The results indicate that the nano-ceramic/inorganic pigment composite coating possesses durable resistance to aqueous phases across a wide temperature range.