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A marine antifouling coating

A marine antifouling and coating technology, applied in antifouling/underwater coatings, rosin coatings, polyurea/polyurethane coatings, etc., can solve the problems of high preparation cost, poor antifouling durability, and large environmental hazards of ship antifouling coatings , to achieve the effect of improving antifouling effect and durability, low addition amount, and reasonable preparation cost

Inactive Publication Date: 2011-12-14
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to overcome the disadvantages of existing marine antifouling coatings such as high preparation cost, great environmental hazards, and poor antifouling durability, and to provide a brand-new marine antifouling coating that is environmentally friendly and has strong antifouling ability

Method used

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  • A marine antifouling coating
  • A marine antifouling coating
  • A marine antifouling coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of 2 kg one-component acrylic resin marine antifouling paint

[0046] Weigh the components according to the formula as follows:

[0047]

[0048]

[0049] Preparation process: Disperse 7g fumed silica, 334g zeolite, 298g zinc oxide, 40g iron oxide red and 140g N,N-dimethyldichlorophenylurea on a high-speed paint disperser (1500r / min). 30 min, and grind until the particle size is less than 50 μm to obtain a solid mixture; dissolve 60 g of oily nano silver with an appropriate amount of xylene to obtain a nano silver solution. Add the dispersed and ground solids mixture and nano silver solution to a mixture of 460g 50% solids single-component acrylic resin, 140g 60% solids petroleum resin C9, 330g 60% solids rosin liquid and 17.4g organic bentonite In the solution, the mixture is then stirred evenly under high shear (1500r / min) stirring, while adding the remaining xylene and cyclohexanone 60g to adjust the viscosity of the coating to about 60s.

Embodiment 2

[0051] Preparation of 2 kg chloroether resin marine antifouling paint

[0052] Weigh the components according to the formula as follows:

[0053]

[0054]

[0055] Preparation process: prepare 7g of fumed silica, 297g of zeolite, 298g of zinc oxide, 40g of iron oxide red, and 40g of N,N'-dimethyl-N'-phenyl-(N-fluorodichloromethylthio)sulfonamide Fully disperse on a high-speed paint dispersing machine (1500r / min) for no less than 30 minutes, and grind to a particle size of less than 50μm to obtain a solid mixture; dissolve 60g of oily nano silver with an appropriate amount of xylene to obtain a nano silver solution. Add the dispersed and ground solids mixture and nano silver solution to the mixed solution of 400g 45% solids chloroether resin, 300g 60% solids rosin liquid, 200g 60% solids petroleum resin C9 and 24g organic bentonite, and then The mixture is stirred evenly under high shear (1500r / min) stirring, and the remaining xylene and cyclohexanone 60g are added to adjust the co...

Embodiment 3

[0057] Preparation of 2 kg fluorocarbon resin marine antifouling paint

[0058] Weigh the components according to the formula as follows:

[0059]

[0060] Preparation process: prepare 300g of titanium dioxide, 168g of zinc oxide, 40g of iron oxide red and 200g of 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one on a high-speed paint disperser (1500r / min) Fully disperse for no less than 30 minutes, and grind to a particle size of less than 50 μm to obtain a solid mixture; dissolve 60 g of oily nano silver with an appropriate amount of mixed solvent to obtain a nano silver solution. Add the dispersed and ground solid mixture and the nano silver solution to the mixed resin solution of 800g 50% solid fluorocarbon resin and 200g curing agent DN-980, and then put the mixture under high shear (1500r / min) Stir evenly under stirring. At the same time, add 3033 or BYK-3061g, 4047 or BYK-1631g, and the remaining mixed solvent to adjust the viscosity of the paint to about 60s.

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Abstract

The invention relates to a marine antifouling paint, which is composed of a film-forming base material, an antirust pigment, a diluent, a filler and a combined antifouling agent, characterized in that the combined antifouling agent is composed of A and B components, The weight ratio of the two components A and B is 1:3 to 1:20; wherein component A is oil-soluble nano-silver, and component B is an organic algicide; the organic algicide is selected from N, N-di Methyldichlorophenylurea, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, N,N'-dimethyl-N'-phenyl-(N-fluoro Dichloromethylthio)sulfonamide has one or more of them mixed. The coating does not contain tin or copper and other toxic substances that are harmful to the environment. The antifouling agent is combined with nano silver and easily degradable organic algicide. The antifouling effect of the antifouling coating is efficient and durable, and the amount of antifouling agent added Low, is an environmentally friendly antifouling coating. The preparation method is simple and the cost is reasonable.

Description

Technical field [0001] The invention belongs to the technical field of coatings, and particularly relates to a marine antifouling coating. Background technique [0002] With the development of science and technology and the gradual deepening of people's understanding of the ocean, the image that the ocean presents to people is not only an important passage for world transportation, but also an important venue for military, economic, people's livelihood, and scientific and technological exploration. However, marine fouling organisms attached to the bottom of ships will increase navigation resistance, reduce ship speed, and consume more fuel, which will seriously affect combat effectiveness; attaching to marine probes will cause instrument signal distortion and performance degradation; attached to aquaculture nets will cause damage Blocking the meshes and reducing the efficiency of seawater exchange has led to a sharp drop in production in the breeding area; attachment to the inner...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/16C09D7/12C09D133/00C09D157/02C09D193/04C09D127/06C09D127/12C09D161/20C09D175/04
Inventor 尹衍升董丽华刘涛张福华张玉良
Owner SHANGHAI MARITIME UNIVERSITY
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