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Surface hydrophobic anti-icing method

An anti-icing and hydrophobic technology, which is applied in the fields of crafts, decorative arts, and gaseous chemical plating for producing decorative surface effects, can solve problems such as high cost, poor practicability, and complex surface, and achieve low cost and simplified The effect of simple formation process and processing technology

Active Publication Date: 2016-10-12
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

Although this secondary micro-nano structure has the best effect in reducing the adhesion of solid surfaces, it is very complicated and costly to process the surface of this secondary micro-nano structure that meets the requirements of a certain size and shape, which makes it not very practical.

Method used

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Embodiment Construction

[0044] For deep air pre-cooled engines, anti-icing is the key technology in the design of pre-coolers. According to research, using hydrophobic surface treatment to change the surface characteristics of pre-cooling devices can prevent or delay surface icing and frosting. characteristics, thereby solving the freezing problem of the precooler. Considering the anti-icing characteristics of the hydrophobic surface, the anti-icing problem of the pre-cooling device can be solved by using the hydrophobic surface treatment. characteristics or mechanism, so as to achieve the anti-icing effect. This method has the characteristics of no energy consumption, no pollution, and environmental friendliness, so it has become a research hotspot in the field of anti-icing and anti-frost. However, although the hydrophobic surface can reduce the ice adhesion strength and delay the freezing time of droplets, the solid surface with good hydrophobic performance may not have good anti-icing and anti-f...

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Abstract

The invention discloses a surface hydrophobic anti-icing method. The method comprises the following steps: preparing a silicon pillar array on the surface of a silicon wafer; and preparing black silicon on the surface of the silicon pillar and at spacing positions. The surface hydrophobic anti-icing method provided by the invention has the advantages that firstly the silicon pillar array is prepared on the surface of the silicon wafer firstly, and then the black silicon is prepared on the surface of the silicon pillar array and the spacing positions, so that a secondary micro-nano structure is formed; the effect of reducing solid surface adhesion is excellent, a processing technology is simple, and a formation process of a hydrophobic anti-icing structure can be simplified; meanwhile, cost is low, and efficiency is high.

Description

technical field [0001] The invention belongs to the field of aircraft engine precooling, and in particular relates to a surface hydrophobic anti-icing method. Background technique [0002] With the development of near-space vehicle and space shuttle technology, the application of precooled combined cycle engines in single-stage and two-stage orbital reusable vehicles is becoming more and more extensive. When the engine is working in the suction mode, the incoming air needs to be effectively pre-cooled before being compressed into the combustion chamber, so as to reduce the energy consumption of the engine system and ensure that the compressed air enters the combustion chamber at a suitable temperature, so as to achieve a high thrust-to-weight ratio of the engine and High specific impulse, improve the overall performance of the engine. If the surface of the precooler is icy, it will increase the total pressure loss and airflow distortion, and block the airflow passage. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81C1/00
CPCB81C1/00388B81C1/00444
Inventor 岳晓菲汪元刘卫东王振国
Owner NAT UNIV OF DEFENSE TECH
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