Study on the Anti-Icing Properties of the Fluorine Based Self-Assembled Superhydrophobic Coating

In order to study the freezing process of dynamic water droplets on the surface of anti-icing coatings, a fluorine based self-assembled superhydrophobic coating was prepared on the surface of 7075 aluminum alloy substrate. The variation of the capture rate of dynamic water droplets on the coating surface with the duration of low temperature, surface inclination, and surface temperature was analyzed, and the anti-icing performance of the superhydrophobic coating was further explored. Results showed that the capture rate of water droplets on superhydrophobic surfaces decreased with the prolongation of low temperature duration and the increase of surface inclination angle, and increased with the decrease of surface temperature. At -20 ℃, with a low temperature duration not exceeding 7 min, the superhydrophobic surface could delay the growth rate of ice layers, and the shorter the low temperature duration, the more significant the inhibitory effect of superhydrophobic surfaces on ice layer growth. Besides, in the case of the same duration of low temperature, the smaller the surface inclination, the lower the surface temperature, and the more obvious the inhibitory effect of superhydrophobic surface on ice layer growth.