Preparation method of organosilicon-modified polyurethane hydrogel antifouling paint

An antifouling coating and silicone technology, applied in polyurea/polyurethane coatings, antifouling/underwater coatings, coatings, etc., can solve hydrogel surface damage, poor substrate adhesion, change material surface properties, etc. problems, to achieve the effects of reducing production costs, enhancing water resistance, and preventing adhesion

Active Publication Date: 2016-01-27
ZHEJIANG MARINE DEV RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in laboratory research, various modified hydrogel materials have shown good antifouling performance, but the antifouling test results in the actual ocean are not satisfactory, and the antifouling performance is not ideal. Even lost the antifouling performance
The main reasons are: (1) Most of the hydrogel materials have poor mechanical properties, and the adhesion to the substrate becomes poor after absorbing water; (2) The hydrogel materials are easy to age in seawater, and the physical and chemical properties of the materia...

Method used

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  • Preparation method of organosilicon-modified polyurethane hydrogel antifouling paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Synthesis of silicone modified polyurethane resin:

[0021] Under argon protection, 200g of dry xylene was added to a 1L four-necked flask. Add 34.0g of hexamethylene diisocyanate, 4 drops of di-n-butyltin dilaurate, 100g of polytetrahydrofuran ether glycol (average molecular weight: 1000), 20g of polysiloxane diol (average molecular weight of 990) and DMBA2.00g, and raise the temperature To 80°C, after 4 hours of reaction, 3.20g of butanediol was added for chain extension. After 2 hours of reaction, 2.0 g of triethanolamine was added for neutralization for 0.5 hours. The temperature was reduced to 45°C, and 20.0 g of hexamethylene diisocyanate trimer was added to continue the reaction for 2 hours to complete the reaction. Specific synthetic route such as figure 1 Shown.

[0022] (2) Preparation of two-component hydrogel antifouling coating: The coating contains two components A and B, and the mass ratio of the A and B components is 12:1.

[0023] Among them, componen...

Embodiment 2

[0027] (1) Synthesis of silicone modified polyurethane resin:

[0028] Under argon protection, 200g of dry xylene was added to a 1L four-necked flask. Add 35.0g of toluene diisocyanate, 4 drops of di-n-butyltin dilaurate, 140g of polyethylene glycol 2000, 20g of polysiloxane diol (average molecular weight 990) and DMBA 2.00g, increase the temperature to 80°C, add butyl tin after 4 hours of reaction 3.20g diol chain extension. After 2 hours of reaction, 2.0 g of triethanolamine was added for neutralization for 0.5 hours. The temperature was lowered to 45°C, and 20.0 g of hexamethylene diisocyanate trimer was added to continue the reaction for 2 hours to complete the reaction. The specific synthesis route is the same as in Example 1.

[0029] (2) Preparation of two-component hydrogel antifouling coating: the coating contains two components A and B, and the mass ratio of the A and B components is 12:1.

[0030] Among them, component A is a resin base material carrier. The specific c...

Embodiment 3

[0034] (1) Synthesis of silicone modified polyurethane resin:

[0035] Under argon protection, 200g of dry xylene was added to a 1L four-necked flask. Add 45.0g isophorone diisocyanate, 4 drops of di-n-butyltin dilaurate, 140g polyethylene glycol 2000, 20g polysiloxane diol (average molecular weight 990) and DMBA 2.00g, heat up to 80℃, react for 4h Then 3.20 g of butanediol was added for chain extension. After 2 hours of reaction, 2.0 g of triethanolamine was added for neutralization for 0.5 hours. The temperature was lowered to 45°C, and 20.0 g of hexamethylene diisocyanate trimer was added to continue the reaction for 2 hours to complete the reaction. The specific synthesis route is the same as in Example 1.

[0036] (2) Preparation of two-component hydrogel antifouling coating: The coating contains two components A and B, and the mass ratio of the A and B components is 12:1.

[0037] Among them, component A is a resin base material carrier. The specific components are as follo...

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Abstract

The invention relates to a preparation method of an organosilicon-modified polyurethane hydrogel antifouling paint. The method comprises the following steps: organosilicon-modified polyurethane resin is synthesized; and the hydrogel antifouling paint is prepared. The antifouling paint is a double-component paint composed of a component A and a component B with a mass ratio of (11-13):1. The component A is a resin binder carrier comprising the components of, by mass, 55-65 parts of organosilicon-modified polyurethane resin, 4-6 parts of red iron oxide, 0.5-1.5 parts of organic bentonite, 4-6 parts of zinc oxide, 7-9 parts of copper pyrithione, 6-8 parts of Sea-Nine 211, 2-3 parts of terminated dimethicone, and 10-11 parts of xylene. The component B is a crosslinking agent carrier. According to the invention, the organosilicon monomer is introduced into the polyurethane resin system with a chemical method; with appropriate auxiliary agents and antifouling agent, a low-surface organosilicon antifouling barrier layer is formed, and the paint is provided with self-layering and self-healing effects. The process is simple; the antifouling effect is good; anti-fouling agent dose is low; and production cost is greatly reduced.

Description

Technical field [0001] The invention belongs to the technical field of antifouling coatings, and in particular relates to a preparation method of an organosilicon modified polyurethane hydrogel antifouling coating. Background technique [0002] In recent years, due to the increasing attention to the marine environment, the design and research of environmentally friendly new antifouling coatings is a general trend. As a potential flexible marine antifouling material, hydrogel has attracted more and more attention. Hydrogel is a polymer elastomer with a three-dimensional cross-linked network structure. It has a certain deformation ability and can absorb a large amount of water and keep it in the polymer network. Hydrogels are mainly divided into two categories: (1) Stable chemical glues. The polymers in this hydrogel are generally cross-linked through strong and stable chemical bonds; (2) Reversible physical glues: The formation of the polymer network in this type of hydrogel mai...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D5/16C09D7/12C08G18/79C08G18/73C08G18/75C08G18/76C08G18/66C08G18/61C08G18/48C08G18/34C08G18/32
Inventor 胡建坤陆阿定徐焕志李娟
Owner ZHEJIANG MARINE DEV RES INST
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