A biomimetic anti-icing surface based on improved discontinuous wettability

A wettability and continuous technology, applied in the coating and other directions, can solve the problems of high energy consumption and pollute the environment, and achieve the effect of delaying the freezing time, reducing the harm, and achieving good results.

Active Publication Date: 2020-01-31
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a simple and effective bionic anti-icing surface with discontinuous wettability for the existing passive deicing methods that have defects such as high energy consumption and environmental pollution.

Method used

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  • A biomimetic anti-icing surface based on improved discontinuous wettability
  • A biomimetic anti-icing surface based on improved discontinuous wettability
  • A biomimetic anti-icing surface based on improved discontinuous wettability

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Effect test

Embodiment 1

[0026] Such as image 3 As shown, the surface of the material is uniformly coated with a layer of coating base by spraying technology, and a (titanium dioxide hydrophobic coating), b (polytetrafluoroethylene particle coating), c (ferric oxide nano-coating), d (Silicon-containing hydrophobic coating) Four coatings with different hydrophobic properties are coated on the surface of the material along the longitudinal and transverse directions, so that the hydrophobic coating is distributed in a grid-like pattern on the surface of the material. Based on the actual use requirements, the horizontal and vertical lengths of each coating on the surface of the workpiece can be adjusted, so that the surface of the material has a variety of different wetting characteristics, and the surface of the material presents a "well" shape distribution.

[0027] The surface of the workpiece is coated with hydrophobic coatings with different wetting characteristics, which not only reduces the amount...

Embodiment 2

[0029] Such as Figure 5 As shown, four kinds of a (titanium dioxide hydrophobic coating), b (polytetrafluoroethylene particle coating), c (ferric oxide nano-coating) and d (silicon-containing hydrophobic coating) were applied on the surface of the material by spraying technology. The hydrophobic coating is evenly coated on the surface of the material, and the adjacent areas need to be coated with coatings with different wetting properties, and the distribution form presents a honeycomb shape. According to the icing problem of components in actual working conditions, the distribution form of the hydrophobic coating can be in a densely distributed honeycomb shape, so that the material surface per unit area has more different wetting types. The hydrophobic coatings with different wetting properties on the surface of the components can be sprayed with plasma spraying technology, supersonic spraying technology, nano spraying technology and other spraying technologies, and the coat...

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Abstract

The present invention discloses a non-successional wettability modifying based bionic anti-icing surface which is characterized in that the surface of a material are regularly coated with a plurality of dewatering coatings with different wettability with that of the material, so that the non-successional wettability distribution of the surface of the material can be obtained; in the present invention, a single wettability characteristic of the surface of the material is changed, so that the surface of the material has different dewatering performances and an active anti-icing performance, the adhesion amount of water on the surface of the material is reduced, the icing time is delayed, and the icing freezing intensity is recued; due to dewatering effects of the different dewatering layers, condensate water has different freezing icing time to form discontinuous and non-successional freezing interfaces among the dewatering layers, the freezing adhesion stability between ice and the materials is broken, and the adhesion strength of the ice on the material is reduced. In the present invention, the adhesion amount of the water on the surface of the material is reduced, the icing time is delayed, at the same time, the ability of inhibiting icing and reducing adhesion strength is achieved, and active ice preventing and removing effects are realized.

Description

technical field [0001] The invention relates to the anti-icing technology of material surface. Background technique [0002] As a common natural phenomenon, icing has brought many restrictions and hazards to engineering fields, such as aviation, transportation, electric power and other engineering fields. The icing on the surface of the aircraft affects its aerodynamic performance, especially the icing on the engine, which seriously affects the flight safety. The key components such as the chassis suspension, brake calipers, and steering wheel of the EMU freeze, which reduces the safety and comfort of the ride and shortens the service life. Fan blades, anemometers, wind vanes and other components are icy on the surface, and the wind direction and wind speed cannot be correctly judged, which seriously affects the operating efficiency of the fan, reduces the power generation efficiency of the fan, and increases the failure rate of the fan operation. At present, there are sev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/00C09D127/18C09D1/00C09D183/04
CPCC09D1/00C09D5/00C09D127/18C09D183/04
Inventor 陈廷坤丛茜李杨孙成彬齐迎春金敬福田为军
Owner JILIN UNIV
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