Environment-friendly anti-fouling self-repairing gel coating and synthesis method and application thereof

An environmentally friendly, self-healing technology, used in antifouling/underwater coatings, coatings, and biocide-containing paints, etc., can solve the problem of micropores in the coating, and achieve high inhibition efficiency, fast and long-term inhibition. The effect of biological growth

Inactive Publication Date: 2019-11-01
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing coatings on the market are usually easily affected by the preparation process, resulting in microporosity in the coating, causing defects
Even, the coating is damaged by mechanical factors such as external collisions and scratches to cause small cracks. Such cracks will spread rapidly when exposed to corrosion-prone environments such as the atmosphere, soil or ocean, and accelerate the failure of the coating.

Method used

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  • Environment-friendly anti-fouling self-repairing gel coating and synthesis method and application thereof
  • Environment-friendly anti-fouling self-repairing gel coating and synthesis method and application thereof
  • Environment-friendly anti-fouling self-repairing gel coating and synthesis method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] An environmentally friendly anti-fouling self-repairing gel paint of the present invention is synthesized from component A, component B and component C;

[0070] Specific steps are as follows:

[0071] (1) Synthesis of component A

[0072] Mix 1 g of basic copper sulfate and 60 g of deionized water. Prepare a 1M NaOH aqueous solution, drop it into the basic copper sulfate solution at a rate of 40 drops / min, and form a blue precipitate.

[0073] Use centrifugation (5000rpm, 4min), wash twice to obtain a blue precipitate, then add deionized water to disperse the blue precipitate, and centrifuge again (6000rpm, 4min), wash twice to obtain a blue precipitate.

[0074] Redisperse in 100 mL deionized water. Add 5 mg of butylated hydroxyanisole and 10 mg of dibutyl hydroxytoluene respectively, and react for 4 hours. Centrifuge (6000rpm, 8min), wash with deionized water twice, and freeze-dry for 20h to prepare the final copper salt nanoparticles.

[0075] (2) Synthesis of ...

Embodiment 2

[0082] An environmentally friendly anti-fouling self-repairing gel paint of the present invention is synthesized from component A, component B and component C;

[0083] Specific steps are as follows:

[0084] (1) Synthesis of component A

[0085] Mix 0.8 g of copper nitrate, 0.2 g of copper sulfate, and 100 g of deionized water. Prepare a 1M NaOH aqueous solution, drop it into the copper solution at a rate of 60 drops / min, and form a blue precipitate.

[0086] Use centrifugation (4000rpm, 5min), wash 3 times to obtain a blue precipitate, then add deionized water to disperse the blue precipitate, and centrifuge again (8000rpm, 5min), wash 3 times to obtain a blue precipitate.

[0087] Redisperse in 100 mL deionized water. Add 10 mg of tocopherol and 3 mg of tea polyphenols respectively, and react for 2 hours. The final copper salt nanoparticles were prepared by centrifugation (8000 rpm, 5 min), washing with deionized water for 3 times, and freeze-drying for 24 h.

[0088] ...

Embodiment 3

[0095] An environmentally friendly anti-fouling self-repairing gel paint of the present invention is synthesized from component A, component B and component C;

[0096] Specific steps are as follows:

[0097] (1) Synthesis of component A

[0098] Mix 0.5 g of copper chloride, 0.5 g of copper carbonate, and 50 g of deionized water. Prepare a 1M NaOH aqueous solution, drop it into the copper solution at a rate of 50 drops / min, and form a blue precipitate.

[0099] Use centrifugation (8000rpm, 10min), wash 3 times to obtain a blue precipitate, then add deionized water to disperse the blue precipitate, and centrifuge again (4000rpm, 10min), wash 3 times to obtain a blue precipitate.

[0100] Redisperse in 80 mL deionized water. Add 7 mg of flavonoids and 3 mg of tert-butylhydroquinone respectively, and react for 1 h. The final copper salt nanoparticles were prepared by centrifugation (4000 rpm, 10 min), washing with deionized water three times, and freeze-drying for 22 h.

[...

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Abstract

Environment-friendly anti-fouling self-repairing gel coating and a synthesis method and application thereof are provided. The coating is prepared by mixing an A component, a B component and a C component according to a mass ratio of 2-8:4-15:1, wherein the A component is an anti-fouling material; the B component is an aqueous solution of silica gel, with the aqueous solution being prepared by mixing silica gel and deionized water according to a certain ratio; the C component includes an oxidant, a crosslinking agent, a free radical polymerization initiator and a corrosion inhibitor; and the oxidant, the crosslinking agent and the free radical polymerization initiator are mixed according to a certain ratio. A copper-base material is adopted as an anti-fouling inhibitor so that the inhibition efficiency is high, and growth of microbes polluting the sea can be effectively inhibited. The coating has an excellent self-repairing function, the self-repairing effect of the gel is achieved through a reversible free radical polymerization reaction between the polymer chain and nanometer silicon particle free radicals, cracks of a coating can be repeatedly repaired by utilizing dynamic changes of dynamic covalent bonds on one site, and large-size cracks can be repaired.

Description

technical field [0001] The invention relates to the technical field of polymer self-repairing gel synthesis, in particular to an environment-friendly antifouling self-repairing gel paint and its synthesis method and application. Background technique [0002] The adhesion and fouling of marine organisms to ships, oil platforms, buoys, underwater vehicles and other marine facilities will cause a series of serious problems, such as corrosion and damage to underwater structures, increase in the quality of buoys and navigation facilities, failure of moving parts of equipment, underwater Pipeline blockage, etc. Marine anti-biofouling materials are widely used in the prevention and control of marine biofouling due to their advantages of inhibiting marine biofouling and high cost performance. [0003] Existing coatings on the market are often easily affected by the preparation process, resulting in microporosity in the coating, causing defects. Even, the coating is damaged by mech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D183/07C09D183/06C09D183/08C09D5/16
CPCC08K2003/3045C09D5/1618C09D5/1675C09D183/04C09D183/06C08K3/30C08K3/28C08L83/04C08K3/16C08K3/26C09D183/08
Inventor 王巍陈守刚李文窦雯雯
Owner OCEAN UNIV OF CHINA
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