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Preparation method of antifouling material having crossed regular microstructure on surface

A microstructure, cross-shaped technology, applied in antifouling/underwater coatings, photoengraving process of patterned surface, optomechanical equipment, etc. Point reduction, the effect of reducing the contact area

Inactive Publication Date: 2013-06-12
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing an anti-fouling material with a microstructure on the surface with special geometric parameters for the serious harm caused by biofouling on the surface of ships and marine structures in the marine environment

Method used

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  • Preparation method of antifouling material having crossed regular microstructure on surface
  • Preparation method of antifouling material having crossed regular microstructure on surface
  • Preparation method of antifouling material having crossed regular microstructure on surface

Examples

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Embodiment 1

[0016] Embodiment 1: Preparation of cross-shaped microstructure material

[0017] Prepared by electron beam etching with figure 1 The photomask of the pattern shown, the microstructure arrangement is as follows figure 1 , which is a top view directly above the surface of the material, figure 1 Medium scale bars are in microns. A microstructure with a cross-shaped pattern is etched. The basic units are cross-column-shaped and arranged staggered to form an array. The longest point of the cross is 15 microns, the width of the cross is 3 microns, and the distance between the basic units is 3.4 microns. The specific dimensions are as follows: figure 2 As shown, the unit of the scale in the figure is micron; then the silicon wafer is etched by the deep silicon etching method, etched to a depth of 20 microns in 40 minutes, and a silicon wafer with a depth of 20 microns and a cross-shaped concave pattern can be prepared. Scanning electron microscope photographs of the microstructu...

Embodiment 2

[0020] Prepared by electron beam etching with figure 1 The photomask of the pattern shown, the microstructure arrangement is as follows figure 1 , which is a top view directly above the surface of the material, figure 1 Medium scale bars are in microns. A microstructure with a cross-shaped pattern is etched. The basic units are cross-column-shaped and arranged staggered to form an array. The longest point of the cross is 15 microns, the width of the cross is 3 microns, and the distance between the basic units is 3.4 microns. The specific dimensions are as follows: figure 2 As shown, the unit of the scale in the figure is micron; then the silicon wafer is etched by the deep silicon etching method, and the etching depth is 5 microns in 10 minutes, and a silicon wafer with a depth of 5 microns and a cross-shaped concave pattern can be prepared. Scanning electron microscope photographs of the microstructure image 3 shown.

[0021] Then, take 20g of polydimethylsiloxane and p...

Embodiment 3

[0022] Embodiment 3: the surface contact angle measurement of cruciform microstructure material

[0023] The static contact angles of the polydimethylsiloxane material with a cross-shaped regular microstructure and the polydimethylsiloxane material without microstructure prepared in Example 1 were measured with a static contact angle measuring instrument. It was measured that the static contact angle of the polydimethylsiloxane material without microstructure was 111.9°, and the static contact angle of the polydimethylsiloxane material with cross-shaped microstructure prepared in Example 1 was 140.7°. The existence of the surface microstructure significantly improves the hydrophobicity of the material.

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Abstract

The invention relates to a preparation method of an antifouling material having a crossed regular microstructure on the surface. The method comprises the following steps of: etching a microstructure with a crossed pattern on a photomask, and arranging crossed cylindrical basic units with conical tail ends in a staggered way to form an array; forming a microstructure of a specified depth on the surface of a silicon chip by adopting a plasma deep silicon etching process; and preparing the antifouling material with themicrostructure by adopting a method for rolling over and copying polydimethylsiloxane. Due to the adoption of the crossed pattern of the microstructure and the arrangement mode, the contact area between a fouling organism and the material is reduced, the surface hydrophobicity of the material is enhanced, and adhesion of fouling organisms such as ulva spores, diatoms, barnacle larvae and the like can be effectively prevented. According to the material, an antifouling effectis achieved by using the microstructure on the surface, and loss is avoided; and moreover, the antifouling material can be self-cleaned under the action of water current erosion, is an environmentally-friendly antifouling material, and can be used for preventing and eliminating bio-fouling on the surfaces of ships and marine structural objects under marine environment.

Description

Technical field: [0001] The invention relates to an antifouling material for preventing biofouling on the surface of ships and marine structures in a marine environment, in particular to a preparation method of an antifouling material with a cross-shaped regular microstructure on the surface, and belongs to the technical field of marine antifouling. Background technique: [0002] Marine biofouling is a phenomenon in which sessile and clinging marine organisms grow on the bottom of a ship or on the surface of man-made facilities and cause adverse effects. These organisms are called marine fouling organisms and include microorganisms, marine plants and marine animals, among others. More than 600 species of fouling organisms have been recorded along the coast of China, among which the most important groups are algae, hydra, sponges, scutellaria, bivalves, barnacles and sea squirts. Marine fouling organisms attach to the surface of structures in seawater, such as ships, docks, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L21/027C09D183/04C09D5/16G03F7/00
Inventor 郑纪勇蔺存国张金伟
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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