Novel micro-nano structure surface anti-deicing skin

A micro-nano structure and a new type of technology, used in deicing devices, aircraft parts, transportation and packaging, etc., to achieve the effects of improved service life, easy application and replacement

Inactive Publication Date: 2018-08-28
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For aircraft with relatively tight energy sources, this invention proposes a low-power anti-icing electrothermal skin suitable for the leading edge of the wing to solve the shortcomings of the existing anti-icing methods

Method used

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  • Novel micro-nano structure surface anti-deicing skin
  • Novel micro-nano structure surface anti-deicing skin

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Embodiment Construction

[0021] like figure 2 As shown, a flexible new micro-nano structure surface anti-icing skin, including a multi-layer composite structure.

[0022] Among them, layer I is the superhydrophobic layer on the surface, which is obtained by coating the superhydrophobic film. The surface superhydrophobic layer is obtained by modifying low surface energy substances on the surface of the constructed micro-nano structure. In this embodiment, the surface modification low surface energy substance is perfluorobutyric acid. In this embodiment, polyimide etching technology is used to form a microstructure on the polyimide film, and then plasma nano-deposition technology is used to reduce the surface energy of the material, thereby achieving superhydrophobic performance. The basic requirements for hydrophobic performance design are: the contact angle is greater than 145°, and the contact angle hysteresis is less than 10°. The basic requirements for compatibility with the electric heating la...

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Abstract

The invention discloses a novel micro-nano structure surface anti-deicing skin, and belongs to the field of aircraft anti-deicing. The skin comprises a surface super-hydrophobic layer and an electricheating layer which are connected together, the surface super-hydrophobic layer is a polyimide PI layer with a micro-nano structure surface, and low-surface energy substances are modified on a micro-nano structure. According to the novel micro-nano structure surface anti-deicing skin, the surface super-hydrophobic layer is obtained by micromachining, compared with a traditional surface hydrophobictreatment mode, the service life is greatly prolonged, the novel micro-nano structure surface anti-deicing skin is a separate module and has good adaptability to the aircraft surface, the product isthin and has flexibility, the pasting and covering are easy, and the replacement is convenient after the surface is destroyed.

Description

technical field [0001] The invention relates to a novel micro-nano structured surface anti-icing skin, which belongs to the field of aircraft anti-icing. Background technique [0002] Icing may occur during the flight of the aircraft. The icing of the aircraft is very harmful to the flight of the aircraft. If it is mild, it will cause the reduction of the flight performance of the aircraft; if it is serious, it will lead to serious accidents such as aircraft crashes. Therefore, anti-icing protection is required for key parts that are prone to freezing. [0003] Existing anti-icing methods for aircraft include expansion tube deicing, ordinary electric heating anti-icing, gas-heating anti-icing, antifreeze anti-icing and other methods, but it brings new problems such as affecting the aerodynamic shape, huge energy consumption, and polluting the environment. [0004] For the key parts of the aircraft, if super-hydrophobic treatment is carried out to effectively reduce the coll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C1/12B64D15/12
CPCB64C1/12B64D15/12
Inventor 苑伟政何洋吕湘连王宇朱宝管杰李小婷
Owner NORTHWESTERN POLYTECHNICAL UNIV
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