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A kind of anti-icing functional structure and its preparation method and application

A functional, anti-icing technology, applied in the direction of manufacturing tools, welding equipment, deicing devices, etc., can solve the problems of poor anti-icing effect, achieve the effect of not easy to freeze, delay crystallization nucleation, and reduce residue

Active Publication Date: 2022-05-13
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the superhydrophobic surface only relies on delaying the nucleation of droplet crystallization to achieve anti-icing, and the anti-icing effect is poor.

Method used

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  • A kind of anti-icing functional structure and its preparation method and application
  • A kind of anti-icing functional structure and its preparation method and application
  • A kind of anti-icing functional structure and its preparation method and application

Examples

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preparation example Construction

[0025] The invention provides a preparation method of an anti-icing functional structure, comprising the following steps:

[0026] A wedge-shaped microstructure is prepared on the surface of the substrate, and a wedge-shaped microstructure layer is formed on the surface of the substrate; the wedge-shaped microstructure layer is formed by array-distributed wedge-shaped microstructures, and the wedge-shaped microstructure includes a plurality of series-connected wedge-shaped grooves, connected in series In two adjacent wedge-shaped grooves, along the water flow direction, the wide end of one wedge-shaped groove is connected to the narrow end of the other wedge-shaped groove through a transition arc;

[0027] Prepare nanoscale lattices distributed in an array on the surface of the wedge-shaped microstructure layer, and form a nanoscale lattice layer on the surface of the wedge-shaped microstructure layer;

[0028] The substrate with the nanoscale lattice structure layer on the su...

Embodiment 1

[0043] according to image 3 The flow chart shown prepares a functional surface, including the following steps:

[0044] Fluorosilane F1060 (CFH 2 CH 2 -Si(OC 2 h 5 ) 3 ) as the solute and toluene as the solvent, prepare a fluorinated solution with a mass fraction of 1.5% (referred to as the first fluorinated solution) and a fluorinated solution with a mass fraction of 0.2% (referred to as the second fluorinated solution);

[0045] Taking the aluminum alloy 2524 for aviation as the substrate, immerse the substrate in the first fluorinated liquid, and make the first fluorinated liquid submerge the upper surface of the substrate by 1 mm, and use laser liquid phase processing method on the substrate The wedge-shaped microstructure was processed by surface scanning, and a wedge-shaped microstructure layer was formed on the surface of the substrate; the obtained substrate was taken out from the first fluorinated liquid, dried with high-purity nitrogen, and then heated in a hol...

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Abstract

The invention provides an anti-icing functional structure and its preparation method and application, which belong to the technical field of mechanical surface engineering. The preparation method of the anti-icing functional structure provided by the present invention comprises the following steps: preparing a wedge-shaped microstructure on the surface of the substrate, forming a wedge-shaped microstructure layer on the surface of the substrate; preparing a nanoscale lattice on the surface of the wedge-shaped microstructure layer, A nanoscale lattice layer is formed on the surface of the wedge-shaped microstructure layer; the substrate with the nanoscale lattice structure layer on the surface is subjected to low surface energy treatment, and an anti-icing functional structure is formed on the surface of the substrate. The anti-icing functional structure provided by the present invention is provided with nano-scale lattices and micron-scale wedge-shaped grooves, which can realize the effective anti-adhesion of liquid on the solid surface under the action of directional force, and at the same time make the tiny liquid droplets on the solid surface be continuously Collected, and under the action of the droplet's own pressure difference and directional force, it is directional transported away from the solid surface, so as to achieve surface anti-icing.

Description

technical field [0001] The invention relates to the technical field of mechanical surface engineering, in particular to an anti-icing functional structure and its preparation method and application. Background technique [0002] Aircraft anti-icing is critical to flight safety. Since the anti-icing system needs to run for a long time, while the de-icing system only needs to run periodically, so the anti-icing system consumes more energy, so it is mainly used for important components, such as engines and wings. Superhydrophobic surfaces have certain advantages in delaying the freezing of surface droplets and reducing the adhesion of the frozen layer, which expands new ideas for aircraft anti-icing technology. [0003] At present, the thermal spraying zinc-aluminum coating technology is one of the ways to construct a super-hydrophobic surface. Specifically, the zinc-aluminum alloy coating is sprayed on the Q235 steel plate with the arc spraying technology, and then the surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/364B64D15/00
CPCB23K26/364B64D15/00
Inventor 郝秀清张靖辰牛宇生杨吟飞陈妮李亮何宁
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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