Nano superhydrophobic surface used for airplane antifreezing and deicing and preparation method thereof

Abstract

The invention belongs to the technical field of surface treatment, and relates to a nano superhydrophobic surface used for airplane antifreezing and deicing and a preparation method thereof. The preparation method comprises the following steps: making a hydrophobic microstructure on a substrate by non-silicon surface micromachining technology or microreplication method; coating a nano decorative film on the surface of the hydrophobic microstructure; and baking the prepared hydrophobic microstructure and the substrate coated with the nano decorative film to obtain the dry and clean superhydrophobic surface. The nano superhydrophobic surface improves the contact properties between the surface of an airplane and waterdrops and greatly reduces the degree that a fuselage is infiltrated by the waterdrops; and the nano decorative film can also further reduce the viscous force of the waterdrops when the waterdrops slip the surface of the fuselage, the number of the waterdrops condensed on the surface of the fuselage is reduced, the icing degree on the surface of the airplane is effectively reduced, and the aim of high-efficiency, clean and low-cost airplane ice prevention / removal is achieved.

Description

technical field [0001] The invention relates to a material in the technical field of surface treatment and its preparation, in particular to a nanometer super-hydrophobic surface for aircraft anti-icing and deicing and a preparation method thereof. Background technique [0002] During the flight, the windward surface of the aircraft often freezes due to the impact and accumulation of supercooled water droplets, which will bring great harm to flight safety. For example, the icing of the speed measuring and pressure measuring sensor probes will cause the instrument indication to be distorted; the icing of the aircraft (tail) wing will affect the aerodynamic shape, increase the flight resistance, reduce the lift, and affect the maneuverability and stability of the whole aircraft; Ice intake components can stall the engine, etc. According to a report in the United States in 1998, in the ten years from 1988 to 1998, there were no less than 10 accidents caused by the sudden icing...

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Problems solved by technology

[0005] After searching the literature of the prior art, it was found that in the patent of Chinese application publication number: CN1347630, entitled "Method and System for Surface Deicing", it is proposed to use ferroelectrics, lossy dielectrics, ferromagnets or semiconductor materials for coatings Arranged under the aircraft skin, and apply alternating current through the electrical conductor to generate an electromagnetic field. After the coating absorbs the energy from the electromagnetic field, it uses the heat formed to melt the ice and snow layer on the upper surface of the aircraft skin, so as to achieve the purpose of anti-icing .However, the above method has the disadvantages of complex design and difficult implementation. It does not overcome the shortcomings of traditional electrothermal deicing that requires the arrangement of heating electrode systems and huge power consumption, and it is difficult to achieve convenient and efficient anti-icing / deicing effects.

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