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A high-adhesion gradient layered fouling-release marine antifouling coating

A marine anti-fouling and high-adhesion technology, which is applied in the fields of marine anti-fouling coatings and underwater coatings, can solve the promotion and use restrictions of silicone fouling release type anti-fouling coatings, the peeling of silicone fouling release coatings, Problems such as low surface free energy, to achieve the effect of excellent fouling release and antifouling effect, excellent bonding performance, and simple preparation conditions

Active Publication Date: 2022-02-18
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it is precisely because of the low surface free energy of silicone-based materials that silicone-based materials often have good non-polar characteristics, resulting in the curing of materials with metal substrates, or with marine primers or marine intermediate paints. In the actual use process, with the prolongation of service time, or collision with other substances, the silicone fouling release coating with poor adhesion is easy to release from the substrate or primer or intermediate The paint is peeled off, or a large area is peeled off due to local damage
This phenomenon has led to the promotion and use of silicone fouling release antifouling coatings has received a lot of restrictions

Method used

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  • A high-adhesion gradient layered fouling-release marine antifouling coating
  • A high-adhesion gradient layered fouling-release marine antifouling coating
  • A high-adhesion gradient layered fouling-release marine antifouling coating

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0037] Into a 500ml four-neck flask equipped with dry nitrogen, magnetic stirrer, condenser, thermometer and water area heating, add 100g of methyl vinyl MQ type silicone resin after drying at 60°C for 24h to remove water, and then add 4A 10 g of methyl methacrylate, 10 g of trimethylolpropane trimethacrylate, and 1 g of azobisisobutyronitrile after dewatering by molecular sieve were heated to 55° C. and reacted for 2 h. Then, keeping the reaction temperature, 10 g of methyl methacrylate and 10 g of trimethylolpropane trimethacrylate were slowly dropped into the four-necked flask after 4A molecular sieve to remove water, and the reaction was continued for 2 h. Then the temperature was lowered to room temperature, the reaction product was taken out and washed three times with ethanol, and the product insoluble in alcohol was obtained after filtration, which was the acrylic acid MQ type silicone resin copolymer with hydroxyl groups in the side chain. It is jelly-like at room tem...

Synthetic example 2

[0039]Into a 500ml four-neck flask equipped with dry nitrogen, magnetic stirrer, condenser, thermometer and water area heating, add 80g of methyl vinyl MQ type silicone resin after drying at 60°C for 24h to remove water, and then add 4A 5 g of isobornyl acrylate, 15 g of hydroxyethyl methacrylate, and 1 g of azobisisobutyronitrile after dewatering by molecular sieve were heated to 60° C. and reacted for 1 h. Then, while maintaining the reaction temperature, 5 g of isobornyl acrylate and 15 g of hydroxyethyl methacrylate after being dehydrated by 4A molecular sieves were slowly added dropwise into the four-necked flask, and the reaction was continued for 3 h. Then the temperature was lowered to room temperature, the reaction product was taken out and washed three times with ethanol, and the product insoluble in alcohol was obtained after filtration, which was the acrylic acid MQ type silicone resin copolymer with hydroxyl groups in the side chain. It is jelly-like at room tempe...

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Abstract

The invention relates to a marine antifouling coating with high cohesive force gradient layered fouling release type. The antifouling coating composition includes: 10-30 parts of gradient separation resin, 50-100 parts of silicone hydrophobic resin, 10-40 parts of filler, 0.05-1 part of auxiliary agent, 1-8 parts of curing agent, and 0.05-2 parts of catalyst . The high-viscosity gradient layered fouling-release marine antifouling paint of the present invention can be directly coated on metal substrates immersed in seawater environments, or coated on epoxy intermediate paints applied to the surface of metal substrates immersed in seawater environments or epoxy primer. After curing, the coating has excellent adhesion to the metal substrate or epoxy intermediate paint or epoxy primer, that is, it has good adhesion to the metal substrate or epoxy intermediate paint or epoxy primer. The seawater contact surface has excellent hydrophobicity and low surface energy performance, that is, it has excellent fouling release marine antifouling effect.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling coatings and underwater coatings, in particular to a marine antifouling coating with high cohesive force gradient layered fouling release type. Background technique [0002] The adhesion of marine fouling organisms is a major problem faced by countries all over the world in the development of the marine transportation industry. The adhesion of fouling organisms leads to an increase in the weight of ships and other vehicles, resulting in additional fuel consumption. In addition, it will cause a series of problems such as corrosion of the metal substrate and blockage of the exchange net. At present, the international community is vigorously developing environmentally friendly marine antifouling coatings to reduce fouling and adhesion while avoiding the release of toxic and harmful agents that will cause harm to the marine ecological environment. [0003] Silicone marine antifouling coati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/04C09D5/16C09D7/65
CPCC09D183/04C09D5/1687C09D5/1675
Inventor 巴淼李莉周宏伟赵梦颖郑一鸣李梦雨
Owner CHANGSHU INSTITUTE OF TECHNOLOGY