Bionic super-hydrophobic surface, and production method and drag reduction method thereof

A super-hydrophobic surface and bionic technology, applied in the field of high-speed and low-consumption underwater vehicles, can solve the problems of high production and maintenance costs, low drag reduction rate, etc.

Active Publication Date: 2016-08-31
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem of low drag reduction rate and high production and maintenance costs in the existing underwater drag reduction technology, the invention provides a preparation method of underwater supercavitation drag reduc

Method used

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  • Bionic super-hydrophobic surface, and production method and drag reduction method thereof
  • Bionic super-hydrophobic surface, and production method and drag reduction method thereof
  • Bionic super-hydrophobic surface, and production method and drag reduction method thereof

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preparation example Construction

[0039] The method for preparing the above-mentioned bionic super-hydrophobic surface provided by the present invention uses the above-mentioned one-time soaking method to prepare a bionic super-hydrophobic surface with a micro-nano structure, specifically comprising:

[0040] The first step, the cleaning of the surface of the spheroid;

[0041] The second step, the preparation of corrosion solution;

[0042] The third step is the corrosion of the spheroid;

[0043] The fourth step, spheroid hydrophobization treatment;

[0044] The fifth step is to dry the hydrophobized spheres and save them for future use.

[0045] The first step is further specifically to use 0.2-2mol / L sodium hydroxide solution to remove oil stains on the surface of the sphere, 0.2-2mol / L hydrochloric acid solution to wash off the sodium hydroxide solution contaminated on the surface of the sphere in the previous step, The surface of the sphere was ultrasonically cleaned with acetone, then cleaned with ab...

Embodiment 1

[0061] Example 1 Bionic drag-reducing micro-nano structured surface

[0062] The surface of the copper ball was ultrasonically cleaned with sodium hydroxide solution, hydrochloric acid solution, and acetone, then cleaned with ethanol, and finally cleaned with deionized water, and dried for later use. The mixed solution of sodium hydroxide and ammonium persulfate was used as the corrosion solution. Solution, the amount of sodium hydroxide in 1L corrosion solution is 3mol, the amount of ammonium persulfate is 0.5mol, and the cleaned copper ball is immersed in the prepared mixed solution of sodium hydroxide and ammonium persulfate for corrosion , the corrosion time is 10min, and then the surface corrosion solution is cleaned with deionized water, and then soaked in ethanol for later use to obtain a bionic drag-reducing micro-nano structure surface, and the third step is hydrophobic The final copper ball is subjected to hydrophobization treatment to obtain a bionic drag-reducing m...

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Abstract

The invention provides a production method of a bionic super-hydrophobic surface, and a method for carrying out underwater drag reduction by using the hydrophobic interface. A bionic technology is combined with a supercavity drag reduction technology, so the underwater drag reduction efficiency is effectively improved, and the production cost and the maintaining cost are low; and raw materials adopted in the invention are nontoxic and have no radiation effect, so the bionic super-hydrophobic surface has no untoward effects on environment.

Description

technical field [0001] The invention relates to the technical field of high-speed and low-consumption underwater vehicles, in particular to a method for preparing an underwater bionic super-hydrophobic surface and a method for reducing drag. Background technique [0002] The resistance encountered by an object during its movement in water is 1000 times that of an air vehicle, and surface forces such as friction between the aircraft body and the surface occupy a dominant position, making the system consume a lot of energy and wear during operation , Short life. Therefore, how to reduce the surface frictional resistance of the system at the microscale has aroused people's attention and attention. Taking ordinary ships as an example, the frictional resistance of ships sailing in water accounts for about 50-80% of the total resistance. Therefore, reducing frictional resistance plays a vital role in speeding up underwater vehicles and saving energy. [0003] At present, common...

Claims

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Application Information

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IPC IPC(8): C23F1/32
Inventor 王景明张景景兰林文
Owner BEIHANG UNIV
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