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A multi-layer unequal-height micro-nano structure imitating Qinling arrow bamboo leaves to prevent ice and snow

A technology for preventing ice and snow and nanostructures, applied in the field of high micro-nanostructures, can solve the problems of aircraft out of control, threatening the flight safety of aircraft, and large load.

Active Publication Date: 2020-06-16
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ice and snow threaten the flight safety of aircraft, and in severe cases can cause the aircraft to lose control or even crash
The existing methods of aircraft anti-icing / de-icing such as mechanical, electric heating, and gas heating have the disadvantages of large energy consumption and heavy load

Method used

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  • A multi-layer unequal-height micro-nano structure imitating Qinling arrow bamboo leaves to prevent ice and snow
  • A multi-layer unequal-height micro-nano structure imitating Qinling arrow bamboo leaves to prevent ice and snow
  • A multi-layer unequal-height micro-nano structure imitating Qinling arrow bamboo leaves to prevent ice and snow

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specific Embodiment approach 1

[0029] The base and surface microstructures are made of titanium alloy. The base is a plane. This multi-layer micro-nano structure has different heights. The first layer is a columnar structure with a height of 40 microns and a diameter of 15 microns. The lateral spacing of the structures is 70 microns, the vertical spacing is 45 microns; the second layer is a shuttle structure, the length of the shuttle structure is 50 microns, the width is 15 microns, the height is 15 microns, the lateral spacing of the structure is 70 microns, and the vertical spacing is 45 microns ; The third layer is a papillary structure, which is simplified as a cylinder here. The height of this cylinder is 7 microns, the diameter is 8 microns, the horizontal spacing of the structure is 6 microns, and the vertical spacing is 6 microns; the fourth layer is columnar nanostructures. For the structure, the height of the pillars is 600 nanometers, the diameter is 300 nanometers, the horizontal spacing of the ...

specific Embodiment approach 2

[0031] The substrate and surface microstructures are made of flexible PDMS (polydimethylsiloxane). This multi-layer micro-nano structure has different heights. The first layer is a columnar structure. The height of the column is 45 microns, and the diameter is 17 microns. The horizontal spacing of the structure is 80 microns, the vertical spacing is 50 microns; the second layer is a shuttle structure, the length of the shuttle structure is 55 microns, the width is 17 microns, the height is 15 microns, and the lateral spacing of the structure is 80 microns , the vertical spacing is 50 microns; the third layer is a papillary structure, here simplified as a cylinder, the height of this cylinder is 8 microns, the diameter is 7 microns, the horizontal spacing of the structure is 7 microns, and the vertical spacing is 7 microns; The fourth layer structure is a columnar structure, the height of the columns is 700 nanometers, the diameter is 350 nanometers, the horizontal spacing of th...

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Abstract

The invention provides an ice and snow prevention type multi-layer micro-nano structure with unequal heights simulating Qinling fargesia leaves, and belongs to the field of material preparation. The structure comprises multiple layers of micro-nano structures with unequal heights arranged on a substrate, which are respectively a columnar structural body 1, a fusiform structural body 2, a mastoid process-shaped structural body 3 and a columnar nanostructure 4, which are arranged in an array. The invention proposes the ice and snow prevention type multi-layer micro-nano structure with unequal heights simulating Qinling fargesia leaves through a novel bionic object, namely, the Qinling fargesia leaves. Ice and snow prevention mechanisms and experimental data prove the beneficial effects of the structure on the aspect of ice and snow prevention.

Description

technical field [0001] The invention relates to a multi-layer unequal-height micro-nano structure imitating arrow bamboo leaves of Qinling Mountains to prevent ice and snow, and belongs to the field of material preparation. Background technique [0002] Ice and snow threaten the flight safety of aircraft, and in severe cases can cause the aircraft to lose control or even crash. Existing aircraft anti-icing / de-icing methods such as mechanical, electric heating, and gas heating have the disadvantages of high energy consumption and heavy load. In recent years, a new method of ice and snow protection on the surface of bionic micro-nano structure has been proposed internationally. The researchers found that lotus leaf-like superhydrophobic surfaces (SHS) and pitcher plant-like slippery liquid-infused porous surfaces (SLIPS, or slippery liquid-infused porous surfaces) have good anti-ice and snow performance. The anti-ice and snow method of bionic micro-nano structure surface ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B81B1/00
CPCB81B1/00
Inventor 苑伟政何洋吕湘连刘谦王圣坤杨儒元
Owner NORTHWESTERN POLYTECHNICAL UNIV