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Low surface energy nano polyurethane anti-fouling paint and preparation method thereof

An antifouling coating, low surface energy technology, applied in the field of coatings, can solve environmental problems and other problems

Active Publication Date: 2013-06-05
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While this approach effectively controls biofouling, it also brings serious environmental concerns.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In the present embodiment, by mass percentage, the composition of component one is as follows:

[0047] Organosilicon-modified acrylic resin accounts for 44%; polydimethylsiloxane resin accounts for 10%; body pigment and filler accounts for 25%, and described body pigment and filler are made of titanium dioxide, iron oxide red, superfine talcum powder and precipitated sulfuric acid Composed of barium, the average particle size of the body pigment and filler is 3 microns, according to titanium dioxide: red iron oxide: superfine talcum powder: precipitated barium sulfate=1:4:6:20. Fluorosilane-modified nano-SiO 2 1% (according to fluorosilane modified nano-SiO 2 Pure SiO in concentrate 2 10% organic solvent, said organic solvent is xylene; additives accounted for 10% (3% leveling agent BYK306, 3% anti-settling agent BYK 410 and 4% dispersant BYK110).

[0048] In the present embodiment, the preparation method of nano polyurethane antifouling coating is as follows:

[0...

Embodiment 2

[0059] In the present embodiment, by mass percentage, the composition of component one is as follows:

[0060] Silicone-modified acrylic resin accounts for 40%; polydimethylsiloxane resin accounts for 5%; body pigment and filler accounts for 30%, and the body pigment and filler are composed of titanium dioxide, iron oxide red, superfine talcum powder and precipitated sulfuric acid Composed of barium, the average particle size of the body pigment and filler is 2 microns, according to titanium dioxide: red iron oxide: superfine talcum powder: precipitated barium sulfate=1:3:7:20; nano-SiO modified by fluorosilane 2 5% (according to fluorosilane modified nano-SiO 2 Pure SiO in concentrate 2 accounted for); organic solvent accounts for 15%, and the organic solvent is xylene; auxiliary agent accounts for 5% (2% leveling agent BYK300, 2% anti-settling agent BYK 420 and 1% dispersant BYK130).

[0061] In the present embodiment, the preparation method of nano polyurethane antifoulin...

Embodiment 3

[0071] In the present embodiment, by mass percentage, the composition of component one is as follows:

[0072] Organosilicon-modified acrylic resin accounts for 40%; polydimethylsiloxane resin accounts for 3%; and body pigment and filler accounts for 24%. Composed of barium, the average particle size of the extender pigment is 4 microns. According to titanium dioxide: red iron oxide: ultrafine talc powder: precipitated barium sulfate = 1:3:8:16; fluorosilane modified nano-SiO 2 Accounted for 3% (according to fluorosilane modified nano-SiO 2 Pure SiO in concentrate 2 15% organic solvent, said organic solvent is n-butyl acetate; additives accounted for 15% (5% leveling agent BYK307, 5% anti-settling agent BYK 431 and 5% dispersant BYK141).

[0073] In the present embodiment, the preparation method of nano polyurethane antifouling coating is as follows:

[0074] 1) Silicone-modified acrylic resin is used as the matrix, and fluorosilane-modified nano-SiO is added 2 Concentrat...

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Abstract

The invention, belonging to the field of paints, discloses a low surface energy nano polyurethane anti-fouling paint and a preparation method thereof. The paint is mainly applied in preventing fouling for ships. The low surface energy nano polyurethane anti-fouling paint comprises 20-60 wt% of organosilicon modified acrylic resin, 0.5-10 wt% of polydimethylsiloxane resin, 0.5-10 wt% of fluoroal kylsilane modified nano silicon dioxide, 20-40 wt% of extender pigment, 5-15 wt% of auxiliary agent, and 10-30 wt% of organic solvent. The preparation method comprises the following steps: 1) carrying out surface treatment with fluoroal kylsilane on nano silicon dioxide; 2) preparing the treated fluoroal kylsilane modified nano silicon dioxide into a concentrated slurry; and 3) mixing the fluoroal kylsilane modified nano silicon dioxide concentrated slurry with other raw materials to obtain a component A of the anti-fouling paint; dissolving a curing agent to obtain a component B, adding the component A in the component B, curing 30 min-15 day at a temperature of 10-30 DEG C to form the low surface energy nano polyurethane anti-fouling paint. The anti-fouling paint prepared by using a new technique of nanoparticle treatment has the advantages of low surface energy, no toxicant release, safety, and environmental protection.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a low surface energy nano polyurethane antifouling coating and a preparation method thereof. Background technique [0002] Marine biofouling is defined as the undesired accumulation of microorganisms, marine plants and animals on artificial surfaces in the ocean. The part below the waterline of the hull is soaked in seawater for a long time, which is easy to foul a variety of marine organisms, such as barnacles, mussels, tube worms and seaweed. Biofouling on the surface of the hull will generate high frictional resistance, increase the weight of the hull, reduce the speed of the ship, and eventually lead to increased fuel consumption. In addition to increasing fuel consumption, biofouling can increase the frequency of ship docking for maintenance, leading to hull corrosion. [0003] Marine fouling of ship hulls has traditionally been controlled by incorporating organotin compounds or cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04
Inventor 史洪微刘福春韩恩厚张善志于涛武琳琳
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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