Method for preparing large-size micro-groove bionic antifouling coating by template imprinting method

An anti-fouling coating and micro-groove technology, which can be used in coatings, devices for coating liquids on surfaces, and surface pretreatment, etc., can solve problems such as high production costs, harsh process conditions, and complex processes, and achieve low costs. , The effect of low preparation conditions and simple process

Pending Publication Date: 2021-05-07
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the technical problems that the antifouling coating microstructure surface preparation technology in the prior art is complex, the process conditions are relatively harsh, the production cost is high, and only a small-sized microstructure surface can be prepared, the present invention provides a method for preparing A method for biomimetic antifouling coating with large-scale microstructure morphology. This method laser-etches the biomimetic microgroove structure on the surface of the template, and then imprints the template with the microstructure on the surface of the antifouling coating, which can be quickly and conveniently Preparation of large-area microstructure biomimetic antifouling coating

Method used

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  • Method for preparing large-size micro-groove bionic antifouling coating by template imprinting method
  • Method for preparing large-size micro-groove bionic antifouling coating by template imprinting method
  • Method for preparing large-size micro-groove bionic antifouling coating by template imprinting method

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Embodiment 1

[0045] A method for preparing large-scale micro-groove biomimetic antifouling coatings by template imprinting method. This embodiment is based on a flat template, and specifically includes the following steps:

[0046] (1) Using the aluminum alloy material as a template, cut the aluminum alloy material into a rectangle with a length of 200 mm, a width of 100 mm, and a thickness of 1 mm, and then use femtosecond laser micromachining technology to construct a linear groove structure on the aluminum alloy material template , the laser processing process parameters: power 60%, frequency 800KHz, light output width 20μm, continuous light output with two 10mm straight lines (the straight lines coincide, and the processing directions of the two straight lines are opposite during processing), and the platform drives the vibrating mirror at 28mm / s Feed at a high speed, and each single line goes back and forth one by one. After completing a groove processing, continue to emit light with t...

Embodiment 2

[0052] A method for preparing large-scale micro-groove biomimetic antifouling coatings by template imprinting method. This embodiment is based on the roller template, and specifically includes the following steps:

[0053] (1) The stainless steel roller is used as the microstructure template, the length of the roller is 300mm, the diameter is 40mm, the roller is placed vertically and fixed on the rotatable disk, the rotation speed of the disk is set, and then the femtosecond laser micromachining process is used. The laser is perpendicular to the roller template, and a single light source emits light. The laser processing parameters: power 65%, frequency 900KHz, with a single light source radius of 30μm, light is etched every 235μm along the long side of the roller, and each etching is completed 1 Strip dot-shaped groove microstructure, the disc drives the roller to rotate, the rotation distance is 235μm, the disc drives the galvanometer to move to the set position and emits lig...

Embodiment 3

[0058] A method for preparing large-scale micro-groove biomimetic antifouling coatings by template imprinting method. This embodiment is based on a flat template, and specifically includes the following steps:

[0059] (1) Using the silica gel material as a template, cut the silica gel material into a square template with a side length of 500mm and a thickness of 2mm, and then use femtosecond laser micromachining technology to construct a grid-shaped groove structure on the silica gel material template. Processing parameters: power 50%, frequency 600KHz, light output width 40μm, continuous light output with two 10mm straight lines (the straight lines overlap, and the two straight lines are opposite to each other during processing), and the platform drives the vibrating mirror to feed at a speed of 35mm / s. Each single line goes back and forth once, and the horizontal linear groove is prepared first. After the horizontal linear groove is prepared, the longitudinal linear groove i...

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Abstract

The invention relates to a method for preparing a large-size micro-groove bionic antifouling coating by a template imprinting method. The method comprises the following steps that a specific bionic microstructure morphology is etched on a plane template or a roller template through laser, the microstructure template is coated with a release agent, then the bionic microstructure template is directly imprinted on the surface of a surface-dried antifouling coating to be subjected to overturning and forming, the bionic antifouling coating with the microstructure morphology is obtained, and then the bionic antifouling coating with the large-area microstructure is prepared through multiple times of imprinting of the microstructure plane template or continuous rolling imprinting of the microstructure roller template. The method can be carried out under the room temperature condition, the requirement for preparation conditions is low, operation is easy, and preparation of the large-area coating microstructure surface can be achieved; and the prepared bionic antifouling coating has the advantages of uniform surface microstructure morphology, no crack, no shedding, and good antifouling effect.

Description

technical field [0001] The invention relates to the technical field of functional coatings, in particular to a method for preparing bionic antifouling coatings with large-scale micro-topography grooves by a template embossing method. Background technique [0002] Some animals in the ocean, such as whales, sharks, dolphins and other marine animals live in the marine environment, but there are few marine organisms attached to their surfaces. Studies have found that the epidermis of these marine animals has micron-scale grooves. The trough has a certain inhibitory effect on the attachment of marine organisms, and can prevent the attachment of marine organisms to a certain extent. Antifouling coating is the most effective protection method to prevent marine biofouling in the existing technology. It improves its antifouling performance by preparing a microstructure with a biomimetic surface on the surface of the antifouling coating. Biomimetic antifouling coating Layer is a hots...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D5/06B05D3/14B05D3/00B05D7/24
CPCB05D5/00B05D5/061B05D3/14B05D3/007B05D7/24B05D2518/10
Inventor 王萌谢志鹏汤黎容王晶晶邓冰锋张初镱
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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