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A kind of anti-marine biofouling coating and preparation method thereof

A marine biofouling and coating technology, applied in anti-fouling/underwater coatings, anti-corrosion coatings, alkali metal silicate coatings, etc. Long sterilization life, improve impermeability, and prevent substrate corrosion

Active Publication Date: 2022-06-21
华能国际电力股份有限公司海门电厂 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional organic antifouling coatings pollute the seawater environment, and the decomposition products are likely to cause "microplastic" pollution, and the antifouling life is low under the condition of flowing seawater erosion

Method used

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  • A kind of anti-marine biofouling coating and preparation method thereof
  • A kind of anti-marine biofouling coating and preparation method thereof
  • A kind of anti-marine biofouling coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 15g of sodium silicate and 25g of composite antifouling agent with a median particle size of 80nm in proportion to mix and stir evenly. The composite antifouling agent includes Cu 2 O 10g, CuO 5g, TiO 2 5g, Ag 2 0 5g, obtain A component; Weigh in proportion to polyaluminum phosphate 10g, thickener sodium alginate 1g, hydroxyethyl cellulose 1g, Al 2 (Si 2 O 5 )(OH) 4 20g, dispersant calcium lignosulfonate 3g, mix and stir evenly to obtain B component; mechanically stir and mix A and B components, add 25g of C component water in proportion, and mechanically stir and mix to obtain anti-marine Biofouling paint.

[0027] The obtained anti-marine biofouling coating is evenly painted on the surface of the ceramic substrate, and after it is naturally cured and formed, a uniform and dense coating is formed on the surface of the ceramic substrate, which can effectively resist marine biofouling and protect the surface of the seawater immersion structure. Free from ma...

Embodiment 2

[0029] Weigh 17g of sodium silicate and 22g of composite antifouling agent with a median particle size of 120nm and mix them evenly. The composite antifouling agent includes Cu 2 O 10g, TiO 2 6g, Ag 2 0 6g, obtain A component; Weigh in proportion 11g of polyaluminum phosphate, thickener sodium alginate 1g, hydroxyethyl cellulose 0.6g, Al 2 (Si 2 O 5 )(OH) 4 18g, dispersant calcium lignosulfonate 2.4g, mix and stir evenly to obtain B component; mechanically stir and mix A and B components, add 28g of C component water in proportion, and mechanically stir and mix to obtain anti-oxidant. Marine biofouling paint.

[0030]The obtained anti-marine biofouling coating is evenly painted on the surface of the ceramic substrate, and after it is naturally cured and formed, a uniform and dense coating is formed on the surface of the ceramic substrate, which can effectively resist marine biofouling and protect the surface of the seawater immersion structure. Free from marine life. ...

Embodiment 3

[0032] Weigh 20g of sodium silicate and 18g of composite antifouling agent with a median particle size of 120nm and mix them evenly. The composite antifouling agent includes Cu 2 O 9g, Ag 2 0 9g, obtain A component; Weigh polyaluminum phosphate 13g, thickener sodium alginate 1.4g, Al 2 (Si 2 O 5 )(OH) 4 16g, dispersant calcium lignosulfonate 1.6g, mix and stir evenly to obtain B component; mechanically stir and mix A and B components, add 30g of C component water in proportion, and mechanically stir and mix; Marine biofouling paint.

[0033] The obtained anti-marine biofouling coating is sprayed on the surface of the concrete substrate, and after it is naturally cured and formed, a uniform and dense coating is formed on the surface of the concrete substrate, which can effectively resist marine biofouling and protect the surface of the seawater immersed structure from being damaged. Invasion of marine life. The resulting anti-marine biofouling coating eroded away in abou...

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Abstract

The invention relates to an anti-marine biofouling coating and a preparation method thereof. The anti-marine biofouling coating comprises 15-22% of sodium silicate, 15-25% of a composite antifouling agent, and 10-14% of polyaluminum phosphate , Thickener 1~2%, Al 2 (Si 2 o 5 )(OH) 4 15-20%, dispersant 1-3%, solvent water balance. The invention achieves the purpose of preventing substrate erosion and preventing marine organisms from attaching and fouling by coating the surface of an engineering substrate with an antifouling coating with efficient and durable antifouling function, corrosion resistance and environmental friendliness. The present invention uses sodium silicate as the bonding material, through the reaction with polyaluminum phosphate, supplemented with inorganic filler Al 2 (Si 2 o 5 )(OH) 4 , forming an inorganic film with a certain degree of corrosion, continuously releasing sufficient concentrations of copper and silver plasma, effective sterilization and long life, friendly and harmless to the environment, mixed and added with various antifouling agents, synergistic with each other, effectively preventing and controlling a variety of marine organisms invasion. It can also effectively repair tiny cracks in concrete and improve the impermeability of concrete, which has good practical value.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to an anti-marine biofouling coating and a preparation method thereof, which can be used for anti-marine biofouling protection on the engineering structure surface of a coastal power plant in a seawater environment. Background technique [0002] Marine biofouling refers to the biological fouling or biological corrosion formed by the continuous adhesion, growth and reproduction of microorganisms, plants and animals in the marine environment on the surface of facilities submerged by seawater. Marine biofouling has become a global problem faced by human beings in the development and utilization of marine resources, and it has caused huge technical challenges and economic losses to ports and underwater facilities of coastal power plants. The economic cost of marine biofouling is estimated to be as high as $6.5 billion annually. There are many types of marine fouling organi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/04C09D1/00C09D5/08C09D5/14C09D5/16C09D7/61C09D7/43C09D7/44C09D7/65
CPCC09D1/04C09D1/00C09D7/61C09D5/1618C09D5/08C09D5/14C09D5/1656C09D5/1687
Inventor 白玉峰蔡国忠孙伟鹏陈建忠陈裕忠林楚伟冯庭有朱晨亮张武雄陈杰江永郑华强陈斌宋一兵王双喜
Owner 华能国际电力股份有限公司海门电厂
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