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Method for processing surface of multi-scale bionic structure

A technology of bionic texture and processing method, which is applied in the direction of superimposed layer plating, metal material coating process, coating, etc., can solve the problems of high technical difficulty and poor accuracy of bionic surface replication modeling, and achieve good repeatability, The effect of low cost and easy availability of raw materials

Inactive Publication Date: 2011-06-15
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to process a multi-scale bionic micro / nano-textured surface on the metal surface that is consistent with the surface morphology and texture of the biological prototype, so as to solve the problems of poor precision and high technical difficulty in the replication modeling of the bionic surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Using rice leaves as a template, a nickel surface with rice leaf surface micro-texture was prepared:

[0022] (1) Pretreatment

[0023] Rice leaves were cleaned by sonicating with acetone, deionized water, and blown dry with nitrogen.

[0024] (2) AC paper surface reproduction

[0025] Then, using the soft stamp technique, the surface texture of the bio-template was replicated with a cellulose acetate solution; after the cellulose acetate solution was cured, the surface texture of the bio-template was transferred to the cured cellulose acetate film (AC paper). Then a gold film with a thickness of about 100nm was vapor-deposited on the AC paper to increase the conductivity.

[0026] (3) Electrodeposition

[0027] The high-purity nickel plate is used as the anode, and the conductively treated AC paper is used as the cathode, and the electrodeposition treatment is carried out in the nickel-containing electrolyte. Electrolyte composition: nickel sulfate 224g / l, nickel c...

Embodiment 2

[0031] Using the lotus leaf as a template, the nickel surface with the surface micro-texture of the lotus leaf was prepared:

[0032] (1) Pretreatment

[0033] Lotus leaves were cleaned by sonication with acetone, deionized water, and blown dry with nitrogen.

[0034] (2) AC paper surface reproduction

[0035] Then, using the soft stamp technique, the surface texture of the bio-template was replicated with a cellulose acetate solution; after the cellulose acetate solution was cured, the surface texture of the bio-template was transferred to the cured cellulose acetate film (AC paper). Then a gold film with a thickness of about 100nm was vapor-deposited on the AC paper to increase the conductivity.

[0036] (3) Electrodeposition

[0037] The high-purity nickel plate is used as the anode, and the conductively treated AC paper is used as the cathode, and the electrodeposition treatment is carried out in the nickel-containing electrolyte. Electrolyte composition: nickel sulfat...

Embodiment 3

[0041] Using the taro leaf as a template, the nickel surface with the micro-texture of the taro leaf surface was prepared:

[0042] (1) Pretreatment

[0043] Taro leaves were cleaned by sonication with acetone, deionized water, and blown dry with nitrogen.

[0044] (2) AC paper surface reproduction

[0045] Then, using the soft stamp technique, the surface texture of the bio-template was replicated with a cellulose acetate solution; after the cellulose acetate solution was cured, the surface texture of the bio-template was transferred to the cured cellulose acetate film (AC paper). Then a gold film with a thickness of about 100nm was vapor-deposited on the AC paper to increase the conductivity.

[0046] (3) Electrodeposition

[0047] The high-purity nickel plate is used as the anode, and the conductively treated AC paper is used as the cathode, and the electrodeposition treatment is carried out in the nickel-containing electrolyte. Electrolyte composition: nickel sulfate 2...

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PUM

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Abstract

The invention discloses a method for processing the surface of a multi-scale bionic structure. The method combines a surface replica method and an electro-deposition method and sequentially comprises the following steps of: (1) replicating a biological prototype surface structure by using active carbon (AC) paper by using a soft sealing technique, and then evaporating a gold film on the AC paper to increase the electric conductivity; and (2) depositing a metal coating on the conductive treated AC paper by adopting the electro-deposition method in metal electrolyte, and finally, micro-processing the bionic structure with biological surface and high precision on the metal surface, wherein the shape and the size of the bionic structure are consistent with those of a micro / nano structure on the biological prototype surface.

Description

technical field [0001] The invention relates to a surface processing method for obtaining a multi-scale bionic micro / nano texture on a metal surface, belonging to the field of bionic surface treatment. Background technique [0002] Many plants in nature have super-hydrophobic surfaces, such as lotus leaves. The contact angle of water on the surface of these leaves is greater than 150°, and when the leaves are slightly tilted, the water droplets quickly slide down and take away the particulate pollutants on the leaves. This phenomenon is called the lotus leaf effect, which is caused by the hydrophobic wax on the outer skin of the lotus leaf and the micro-nano double-layer structure on the surface of the leaf. Geckos can crawl on smooth vertical surfaces or ceilings by utilizing the densely packed nanometer-sized setae arrays on their feet, exhibiting great adhesion. Dung beetle is a soil animal that can move freely in the soil and has strong anti-adhesion ability. The uniqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/12C23C28/02C23C14/24
Inventor 王立平王莹薛群基
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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