Fabrication and characterization of a TiO2/polysiloxane resin composite coating with full-thickness super-hydrophobicity

We present a simple approach for the fabrication of a full-thickness super-hydrophobic composite coating consisted of modified TiO2 nanoparticles and polysiloxane resin. Scanning electron microscope (SEM), fourier transform infrared spectrometer (FTIR), contact angle meter and a simple self-made device were employed to characterize the surface morphologies, chemical compositions, contact angle and sliding angle of the modified TiO2 nanoparticles and composite coating, respectively. Results show that for both the modified TiO2 nanoparticles and the as-prepared composite coating the contact angle and sliding angle of is up to 152° and 0°, respectively. In addition, due to the coating design of full-thickness super-hydrophobicity, the composite coating also exhibited good thermal stability, abrasion resistance and corrosion resistance in the thermo-gravimetric analysis (TGA) experiment, abrasion test and immersion test, respectively.