A fluorine-free superhydrophobic silicone rubber surface has excellent self-cleaning and bouncing properties.

Superhydrophobic materials have been widely applied in self-cleaning, anti-fouling, anti-corrosion, anti-freezing. However, simple, efficient, environmentally friendly and large-area preparation is still a great challenge in the field of fabrication of superhydrophobic surfaces. In this paper, a simple physical deposition method is adopted to deposit a layer of alumina oxide (AlO) particles on the surface of the room temperature vulcanized (RTV) silicone rubber, and remove the excess AlO particles on the surface to obtain the superhydrophobic surface of AlO/RTV silicone rubber.