A biomimetic textured material with anti-algae adhesion performance and preparation method thereof

A biomimetic texture and adhesion technology, applied in biocide-containing paints, antifouling/underwater coatings, polyurea/polyurethane coatings, etc., can solve problems such as accumulation, increased ship sailing resistance, corrosion damage, etc. The effect of reducing the contact area, reducing the number of attachment sites, and not easy to attach

Active Publication Date: 2016-08-10
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as barnacles, algae, oysters, mussels, lime worms, enteromorpha, sea squirts, sea anemones, etc., non-selectively adhere and deposit on the surface of ship shells, marine structures, culture cages, etc., resulting in serious economic losses and safety hazards
Such as increasing the resistance of the ship's navigation and increasing fuel consumption; causing pipeline blockage, destroying the anti-corrosion coating on the surface of the building, and causing corrosion damage
At present, the prevention and control of biological biofouling is mainly through the addition of organic tin, cuprous oxide and other substances to achieve the antifouling effect. It is toxic and will accumulate in organisms, which has a great impact on the marine biological environment. Organotin has been banned in 2008, and cuprous oxide is gradually being banned.

Method used

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  • A biomimetic textured material with anti-algae adhesion performance and preparation method thereof
  • A biomimetic textured material with anti-algae adhesion performance and preparation method thereof
  • A biomimetic textured material with anti-algae adhesion performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Preparation of silicone acrylate antifouling coating with positive morphology microstructure imitating crab shell

[0035] according to figure 1 The process shown prepares a textured coating with a positive morphology of crab shells: wash the surface of crab shells with deionized water, and dry them with a weak nitrogen flow. Then prepare the silicone elastomer template; the preparation process is as follows: fully mix Dow Corning SYLGARD184 polydimethylsiloxane (PDMS) and its supporting crosslinking agent at a mass ratio of 10:1, first cure at room temperature for 2 hours, and Remove the air bubbles in the mixed solution; then pour the mixed solution on the surface of the crab shell, and then cure it at 70°C for 12 hours; finally, peel the cured PDMS from the crab shell to obtain a silicone elastic material with a negative surface morphology of the crab shell. body template.

[0036]The process of preparing silicone-modified acrylic polyurethane coating is...

Embodiment 2

[0038] Example 2: Preparation of silicone acrylate antifouling coating material with negative morphology of imitation crab shell

[0039] according to figure 1 The process shown is to prepare a textured coating with a negative morphology of crab shells, where the curing temperature and time can be adjusted appropriately: wash the surface of crab shells with deionized water, and dry them with a weak nitrogen flow. Then prepare the silicone elastomer template; the preparation process is as follows: fully mix Dow Corning SYLGARD184 polydimethylsiloxane (PDMS) and its supporting crosslinking agent at a mass ratio of 10:1, first cure at room temperature for 2 hours, and Remove the air bubbles in the mixed solution; then pour the mixed solution on the surface of the crab shell, and then cure it at 50°C for 15 hours; finally, peel the cured PDMS from the crab shell to obtain a silicone elastic material with a negative surface morphology of the crab shell. body template. The treated...

Embodiment 3

[0042] Example 3: Preparation of organosilicon acrylate antifouling coating material with positive morphology imitating lotus leaf

[0043] according to figure 1 The process shown is to prepare a textured coating with the positive shape of lotus leaves, in which the curing temperature and time can be adjusted appropriately: wash the surface of lotus leaves with deionized water, and dry them with a weak nitrogen flow. Then prepare the PDMS template; the preparation process is as follows: fully mix Dow Corning SYLGARD184 polydimethylsiloxane (PDMS) and its supporting crosslinking agent at a mass ratio of 10:1, first cure at room temperature for 2 hours, and remove the mixed solution Then pour the mixture on the surface of the lotus leaf, and then cure it at 150°C for 8 hours; finally, the cured silicone elastomer is peeled off from the lotus leaf to obtain a silicone elastomer with a negative surface morphology of the lotus leaf. body template.

[0044] The process of preparin...

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Abstract

The invention discloses a biomimetic textured material with anti-algae adhesion performance and a preparation method thereof. Natural materials such as crab shells, lotus leaves and other biological skins or leaves are used as templates, and organic silicon elastomers are selected as transition templates to obtain bionic materials. Textured silicone-modified acrylic polyurethane antifouling material. The textured antifouling coating obtained by the method of the present invention has micron-scale protrusions or pits, and the protrusions or pits have nanostructures, which enhance the non-wetting properties of water droplets on the surface of the material, so that it is not easy for fouling organisms Attachment; at the same time, the contact area between the fouling organisms and the bionic textured material is greatly reduced, so that the attachment sites of the fouling organisms are reduced, so that it is not easy to attach. The invention utilizes the natural anti-fouling properties of natural biological leaves or epidermis, adopts the microstructure characteristics of the surface for anti-fouling, and does not pollute the natural environment. It is an efficient and environmentally friendly anti-fouling material based on new ideas and new concepts.

Description

technical field [0001] The invention relates to the technical field of marine antifouling, in particular to a bionic textured material with anti-algae adhesion performance and a preparation method thereof. Background technique [0002] There are a large number of marine organisms in the marine environment, and these marine organisms will attach to the surfaces of facilities and equipment that have been in the marine environment for a long time to form biofouling. Such as barnacles, algae, oysters, mussels, lime worms, enteromorpha, sea squirts, sea anemones, etc., non-selectively adhere and deposit on the surface of ship shells, marine structures, culture cages, etc., resulting in serious economic losses and safety hazards. For example, it will increase the navigation resistance of the ship and increase fuel consumption; it will cause pipeline blockage, damage the anti-corrosion coating on the surface of the building, and cause corrosion damage. At present, the prevention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/12C09D5/16
Inventor 赵文杰许季海曹慧军曾志翔乌学东薛群基
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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