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Organosilicone polyurethane anti-fouling material with low surface energy and hydrolyzed self-polishing function and application thereof

A low surface energy, silicone technology, applied in polyurea/polyurethane coatings, antifouling/underwater coatings, biocide-containing paints, etc., can solve low surface energy, poor static antifouling performance of tin-free self-polishing coatings, Poor antifouling performance of antifouling coatings, etc., to achieve the effect of reducing adhesion and low surface energy

Pending Publication Date: 2019-06-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide an organic silicon polyurethane antifouling material with low surface energy and hydrolysis self-polishing function which is environment-friendly, has self-polishing effect, low surface energy and long-lasting antifouling effect. Poor antifouling performance of surface energy antifouling coatings and poor static antifouling performance of tin-free self-polishing coatings

Method used

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  • Organosilicone polyurethane anti-fouling material with low surface energy and hydrolyzed self-polishing function and application thereof
  • Organosilicone polyurethane anti-fouling material with low surface energy and hydrolyzed self-polishing function and application thereof
  • Organosilicone polyurethane anti-fouling material with low surface energy and hydrolyzed self-polishing function and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation of embodiment 1 polyurethane material

[0031] Dissolve 10g PDMS(R) (molecular weight 1330), 7.5g double-terminated hydroxyl PDMS (molecular weight 365), 35g polyethylene glycol (molecular weight 1000), and 5g HDI in 100g butyl acetate, and then add them to a 250ml single-necked flask for use Stir with a magnet, raise the temperature to 75°C, and add 3 drops of dibutyltin dilaurate dropwise to react. The product is obtained after reacting for 4 hours, and a certain solvent is volatilized to adjust the solid content to 50%. According to 60 parts of the product, 15 parts of cuprous oxide, 10 parts of red iron oxide, 12 parts of PM200 (crosslinking agent), processing aids (leveling agent, Defoamer and other mixtures) 3 parts are formulated into antifouling paint for marine coating.

Embodiment 2

[0032] The preparation of embodiment 2 polyurethane materials

[0033] 52g PDMS (R), 36g double-terminated hydroxyl PDMS, 88g polyethylene glycol (molecular weight 600), 14.16g HDI and 7.48g IPDI were dissolved in 400g xylene, then added to a 1000ml three-necked flask and stirred with a stirring paddle, The temperature was raised to 75°C, and 12 drops of dibutyltin dilaurate were added dropwise to react. The product was obtained after reacting for 6 hours, and a certain amount of solvent was volatilized to adjust the solid content to 50%. According to 60 parts of the product, 15 parts of cuprous oxide, 10 parts of red iron oxide, 12 parts of PM200 (crosslinking agent), and 3 parts of processing aids, it was formulated into an anti- Dirty paint for marine coated panels.

Embodiment 3

[0034] The preparation of embodiment 3 polyurethane materials

[0035] Dissolve 10g PDMS(R), 7.5g double-terminated hydroxyl PDMS, 35g polyethylene glycol (molecular weight 1000), 3.75g HDI and 1.65g IPDI in 100g xylene, then add them to a 250ml single-necked flask and stir with a magnet , heated up to 75°C, and 3 drops of dibutyltin dilaurate were added dropwise to react. The product was obtained after reacting for 1.5 hours, and a certain amount of solvent was volatilized to adjust the solid content to 50%. According to 60 parts of the product, 15 parts of cuprous oxide, 10 parts of red iron oxide, 12 parts of PM200 (crosslinking agent), and 3 parts of processing aids, it was formulated into Antifouling paint for marine coated panels.

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Abstract

The invention discloses an organosilicone polyurethane anti-fouling material with low surface energy and a hydrolyzed self-polishing function and application thereof in the field of hydrolyzed self-polishing marine anti-fouling paint. The organosilicone polyurethane anti-fouling material is prepared through firstly synthesizing a single-terminal bishydroxyl siloxane polymer monomer, and polymerizing the single-terminal bishydroxyl siloxane polymer monomer, a double-terminal hydroxyl siloxane polymer monomer, a diol monomer for regulating softness and hardness and an isocyanate monomer throughfree radicals. According to the organosilicone polyurethane anti-fouling material and the application thereof, the material can have low surface energy through adding silicon groups to a principal chain and lateral chains; and an ammonia ester bond formed by silicon hydroxyl and isocyanate is prone to hydrolyzed breakage, so that the material can be decomposed in water to achieve a self-polishingeffect. The final obtained material has low surface energy and self-polishing capacity and has a relatively good application prospect in the field of marine anti-fouling.

Description

technical field [0001] The invention belongs to the field of marine antifouling coatings, and relates to an organosilicon polyurethane antifouling material with low surface energy and hydrolytic self-polishing functions, and a preparation method and application thereof. Background technique [0002] A large number of microorganisms and marine animals and plants in the ocean will adhere to the underwater shell of the ship, which will greatly increase the quality of the ship itself and the roughness of the surface, and greatly increase the resistance of the ship when sailing. According to statistics, the fuel consumption caused by marine fouling can increase by up to 40%, while the total cost of the voyage can increase by up to 77%. The most effective way to solve marine biofouling is to apply marine antifouling coatings. [0003] In the past few decades, self-polishing marine antifouling coatings containing organotins have been widely used due to their broad-spectrum and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/16C09D7/61C08G18/48C08G18/61C08G18/65C08G18/32
Inventor 张庆华蔡勇杰詹晓力陈丰秋
Owner ZHEJIANG UNIV
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