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Surface micro-structure self-polishing antifouling coating and preparation method thereof

An anti-fouling coating and self-polishing technology, applied in anti-fouling/underwater coatings, coatings, paints containing biocides, etc. , it is difficult to play an anti-fouling effect, etc., to achieve the effect of easy control of process conditions, easy industrial production, and long-term anti-fouling

Inactive Publication Date: 2020-01-14
ZHEJIANG MARINE DEV RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention overcomes the large amount of cuprous oxide antifouling agent used in existing self-polishing antifouling coatings, the difficulty of surface microstructure coatings on the surface of ships, and the difficulty of coating damage due to the deposition of marine microorganisms and inorganic substances on the surface. To solve the problem of its antifouling effect, it provides a self-polishing antifouling coating that can greatly reduce the amount of antifouling agent used and continuously regenerate the surface microstructure

Method used

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  • Surface micro-structure self-polishing antifouling coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] (1) Preparation of resin: first add 180g of xylene solvent in a 500mL four-neck flask equipped with a stirrer, reflux condensing device, semi-automatic sampling device, and ventilation tube, control the stirring speed to be 150 rpm, and feed nitrogen to remove After oxygen for 30 minutes, the solvent was heated to 85°C and a constant nitrogen pressure was maintained; then 117.2g tert-butyl methacrylate, 40g triisopropyl methacrylate silicone grease, 2.8g acrylic acid monomer and 1.28g azobis The mixed solution of isobutyronitrile is added dropwise to the solvent at a uniform speed through a semi-automatic dropping device, and the dropping time is controlled to be 3 hours; after the dropping is completed, continue to keep warm for 4 hours;

[0040] (2) Preparation of microspheres: Add 1.8g of acrylamide, 0.016g of N,N'-methylenebisacrylamide , 0.9g methacrylic acid, 3.6g self-made dispersant, 0.06g azobisisobutyronitrile, 110g n-butanol mixed solution, feed nitrogen for ...

Embodiment 2

[0043] (1) Preparation of resin: first add the mixed solvent mass ratio (7:3) of 180 dimethylbenzene and n-butanol in the 500mL four-neck flask equipped with stirrer, reflux condensing device, semi-automatic sampling device, ventilation tube, Control the stirring speed to 160 rpm, pass through nitrogen to remove oxygen for 30 minutes, then heat the solvent to 85°C and maintain a constant nitrogen pressure; then mix 123g methyl methacrylate, 54g tributyl silicon methacrylate, 3g acrylic monomer 1. The mixed solution of 28g of azobisisobutyronitrile was added dropwise to the solvent at a constant speed through a semi-automatic dropping device, and the dropping time was controlled to be 4 hours; after the dropping was completed, the reaction was continued for 4 hours;

[0044] (2) Preparation of microspheres: Add 2.2 g of acrylamide and 0.016 g of N,N'-methylenebisacrylamide into a 500 mL four-neck flask equipped with a stirrer, reflux condensing device, semi-automatic sampling de...

Embodiment 3

[0047] (1) Preparation of resin: first add the mixed solvent (mass ratio 9:1) of 180g xylene and n-butanol in the four-necked flask that agitator, reflux condensing device, semi-automatic sampling device, ventilation tube are housed, control The stirring speed was 200 rpm, the solvent was heated to 85° C. and a constant nitrogen pressure was maintained after 30 minutes of deoxygenation by passing nitrogen gas. Then, the mixed solution of 128.6g tert-butyl methacrylate, 28.8g triisopropyl acrylate silicone grease, 2.6g acrylic acid monomer and 1.28g azobisisobutyronitrile was dropped into the solvent at a constant speed by a semi-automatic dropping device , the dropping time is controlled to be 3.5 hours; after the dropping is completed, continue the heat preservation reaction for 3.5 hours;

[0048] (2) Preparation of microspheres: Add 2g of acrylamide, 0.016g of N,N'-methylenebisacrylamide, A mixed solution of 1g methacrylic acid, 5g self-made dispersant, 0.06g azobisisobuty...

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Abstract

The invention relates to the technical field of ocean antifouling, aims to overcome the problems that a self-polishing antifouling coating has a large use amount of a cuprous oxide antifouling agent,a surface micro-structure is hard to apply to the surface of a vessel and a coating layer is damaged and the antifouling function is hard to take into play as ocean microorganisms and inorganic matterare settled to the surface, and provides a surface micro-structure self-polishing antifouling coating and a preparation method thereof. The surface micro-structure self-polishing antifouling coatingconsists of the following components in parts by weight: 20-30 parts of a resin, 1-3 parts of microgel spheres, 1-2 parts of a cross-linking agent, 2-3 parts of a plasticizer, 4-5 parts of cuprous oxide, 2-3 parts of copper pyrithione, 5-8 parts of terpene and 5-8 parts of an organic solvent. By virtue of the synergetic antifouling function of the surface micro-structure and a self-polishing antifouling agent, the antifouling effect of the surface of the coating layer can be improved, meanwhile, the use amount of an antifouling agent of a conventional self-polishing antifouling coating formulacan be greatly reduced, and the influence upon the ocean environment can be reduced.

Description

technical field [0001] The invention relates to the technical field of marine antifouling, in particular to a surface microstructure self-polishing antifouling coating and a preparation method thereof. Background technique [0002] Marine fouling refers to the attachment and growth of marine organisms to the surface exposed to seawater, which causes great harm to marine ships and marine facilities. It will not only increase the frictional resistance of ships, reduce the speed of navigation, increase fuel consumption, and lead to aging and damage of turbines , coating damage, steel corrosion, and there are also problems such as affecting heat transfer and increasing equipment energy consumption. According to foreign statistical analysis, marine biofouling can increase the fuel consumption of ships by more than 40%, and the global annual fuel consumption will increase by more than 7 million tons, resulting in economic losses of nearly 10 billion U.S. dollars, while increasing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/10C09D5/16C09D7/65
CPCC09D143/04C09D5/1618C09D5/1625C09D7/65C09D7/70C08K2003/2248
Inventor 张海春胡建坤孙保库范会生陆阿定郁小芬
Owner ZHEJIANG MARINE DEV RES INST
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