Preparation and characterization of perfluorine-SiO_2 nanoparticles and superhydrophobic fluorosilicone/silica hybrid composite coating

摘要

The superhydrophobic fluorosilicone/silica (FS/SiO2) hybrid composite coating was easily fabricated by one-step blending method in this study, whose durable superhydrophobicity could be ensured by fluorosilicone resin (FS) matrix and perfluorine-SiO2 nanoparticles. The prepared perfluorine-SiO2 nanoparticles were detected using FESEM and FT-IR spectra, and the wettability and dispersion effects were studied. The surface morphologies and hydrophobicity of FS/SiO2 coating on glass plates were investigated by AFM and optical contact angle meter, while the adhesion, wear-resistance and chemical regent-resistance for FS/SiO2 superhydrophobic coating were also discussed. At last, the self-cleaning and anti-icing performances of prepared FS/SiO2 superhydrophobic coating were explored. It could be found that the FS coating doped with more than 22% SiO2 would exhibit superhydrophobicity. The water contact angle of the superhydrophobic FS coating could reach 161 degrees and sliding angle 2 degrees in the best condition. The superhydrophobic FS/SiO2 coating possesses relatively satisfied mechanical and chemical stability. Moreover, the prepared superhydrophobic FS/SiO2 hybrid composite coating provided an available selection of protecting surfaces against contamination and icing which validated the practicability.