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Bionically textured material capable of preventing algae attachment and preparation method thereof

A technology of bionic texture and adhesion performance, applied to biocide-containing paints, anti-fouling/underwater coatings, polyurea/polyurethane coatings, etc., can solve the problems of increased sailing resistance, accumulation, corrosion damage, etc., and achieve The effect of reducing the attachment site, reducing the contact area, and making it difficult to attach

Active Publication Date: 2014-12-17
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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  • Bionically textured material capable of preventing algae attachment and preparation method thereof
  • Bionically textured material capable of preventing algae attachment and preparation method thereof
  • Bionically textured material capable of preventing algae attachment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0036] The process of preparing the silicone modified acrylic polyure...

Embodiment 2

[0038] Example 2: Preparation of organic silicon acrylate antifouling coating material with negative microstructure imitating crab shell

[0039] according to figure 1 The shown process prepares a textured coating with negative morphology of crab shells, in which the curing temperature and time can be adjusted appropriately: wash the surface of crab shells with deionized water and blow dry with a weak nitrogen stream. Then prepare the silicone elastomer template; the preparation process is as follows: fully mix Dow Corning SYLGARD184 polydimethylsiloxane (PDMS) and its matching crosslinking agent in a mass ratio of 10:1, and first cure at room temperature for 2 hours, and Remove the bubbles in the mixed liquid; then pour the mixed liquid on the surface of the crab shell, and then cure it at 50 ℃ for 15 hours; finally peel off the cured PDMS from the crab shell to obtain a silicone elasticity with a negative surface morphology of the crab shell Body template. The processed PDMS m...

Embodiment 3

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

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

[0044] The process of p...

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Abstract

The invention discloses a bionically textured material capable of preventing the algae attachment and a preparation method thereof. The bionically textured organic silicon modified acrylic polyurethane antifouling material is prepared by taking natural substances namely biological cuticle or leaves such as crab shell, lotus leaf, and the like as the template, and an organic silicon elastomer as the transition template. The obtained textured antifouling layer has a micrometer level protrusions or pits, wherein the protrusions or pits all have a nano structure, thus the water drop is not easy to wet the surface of the material, and fouling organisms cannot easily attach themselves to the surface of the material; at the same time, the contact surface between the fouling organisms and the bionically textured material is greatly reduced, the attachment sites are reduced, and thus attachment on the surface becomes more difficult for the fouling organisms. The natural antifouling characteristics of biological cuticle or leaves in nature are fully utilized, the characteristics of the microstructure on the surface is utilized to prevent fouling, pollution to the natural environment is not generated, and thus the material is a novel high efficient environment-friendly antifouling material.

Description

Technical field [0001] The invention relates to the technical field of marine antifouling, in particular to a bionic texturing 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 adhere to the surfaces of facilities and equipment that have been in the marine environment for a long time to form biological fouling. For example, barnacles, algae, oysters, mussels, lime worms, enteromorphs, sea squirts, sea anemones, etc., unselectively adhere and deposit in large areas on the surface of ship shells, marine structures, and culture cages, causing serious problems. Economic losses and safety hazards. Such as increase the resistance of the ship's navigation and increase fuel consumption; cause pipeline blockage, damage the anti-corrosion coating on the surface of the building, and cause corrosion damage. At present, the preve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D175/04C09D5/16
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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