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Degradable amphiphilic antifouling paint as well as preparation method and application thereof

An antifouling paint and amphiphilic technology, applied in antifouling/underwater paints, biocide-containing paints, coatings, etc., can solve the problems of protection and low antifouling efficiency, and achieve broad application prospects, low cost, The effect that the processing method is simple

Pending Publication Date: 2022-06-14
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the marine environment is complex, and some marine organisms prefer to attach to hydrophobic surfaces. The existing low surface energy antifouling paints are difficult to protect more types of organisms, and the antifouling efficiency is low.

Method used

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Examples

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preparation example Construction

[0037] The embodiment of the present invention provides the aforementioned preparation method of degradable amphiphilic antifouling paint, comprising the following steps:

[0038] Mixing polyethylene glycol and diisocyanate, preferably adding a volatile solvent, to obtain a diisocyanate component; mixing hydrophobic polyols and degradable polyols, preferably adding a solvent and performing ultrasonic treatment to obtain a hydroxyl component;

[0039] The diisocyanate component and the hydroxyl component are mixed to obtain the degradable amphiphilic antifouling paint.

[0040] The present invention also provides the application of the aforementioned degradable amphiphilic antifouling paint in ship antifouling, and the paint can be painted on the ship steel plate that has been pre-painted with epoxy anti-corrosion primer.

[0041] The degradable amphiphilic antifouling paint prepared in the embodiment of the present invention has the following advantages:

[0042] The present ...

Embodiment 1

[0049] The molecular weight of 1000g is 1×10 5 PEG was dewatered under vacuum at 110 °C, 100 mL of dimethylformamide (DMF) was added after 4 hours, 35 g of toluene diisocyanate (TDI) was added dropwise at 60 °C under nitrogen protection, and the resulting product was mixed with 100 mL of tetrahydrofuran after removing DMF. , Component 1 was prepared by ultrasonication for 30 min. The molecular weight of 1110g is about 3×10 4 Fluorocarbon resin (FEVE), 30g molecular weight is about 6×10 2 Component 2 was prepared by mixing the polycaprolactone polyol (PCL) with 100 mL of butyl acetate and sonicating for 30 min.

[0050] Mix component 1 and component 2 in a mass ratio of 9:10 and stir evenly. After 30 minutes of aging, the formed coating is painted on the carbon steel plate that has been pre-painted with epoxy anti-corrosion primer. The thickness is about 300 μm. For more than 1 day, the dynamic antifouling performance of the antifouling paint was tested in the shallow sea us...

Embodiment 2

[0053] The molecular weight of 500g is 5×10 4 The PEG was dewatered under vacuum at 110 °C, 100 mL of dimethylformamide (DMF) was added after 4 hours, and 50 g of diphenylmethane diisocyanate (MDI) was added dropwise at 60 °C under nitrogen protection. 100 mL of toluene was mixed, and the component 1 was prepared by ultrasonication for 30 min. The molecular weight of 500g is about 1.5×10 4 Hydroxy silicone oil, 60g molecular weight is about 1.5×10 3 The polyadipate / butylene terephthalate (PBAT) was mixed with 100 mL of ethyl acetate, and sonicated for 30 min to prepare component 2.

[0054] Mix component 1 and component 2 in a mass ratio of 1:1 and stir evenly. After 30 minutes of curing, the formed coating is painted on the carbon steel plate that has been pre-painted with epoxy anti-corrosion primer, and the thickness is about 300 μm (below). Example is the same), placed for more than 1 day, the dynamic anti-fouling performance of the anti-fouling paint was tested in the ...

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Abstract

The invention belongs to the technical field of marine antifouling paints, and provides a degradable amphiphilic antifouling paint and a preparation method and application thereof, the degradable amphiphilic antifouling paint comprises a diisocyanate component and a hydroxyl component; the diisocyanate component comprises polyethylene glycol and diisocyanate; the hydroxyl component comprises a hydrophobic polyhydric alcohol substance and a degradable polyhydric alcohol substance; the hydrophobic polyhydric alcohol substance is a hydrophobic substance which is rich in hydroxyl groups and is terminated by the hydroxyl groups; the degradable polyhydric alcohol substance is a hydroxyl-terminated degradable polymer, and is gradually degraded in a seawater environment; hydrophilic groups and hydrophobic groups in the degradable amphiphilic antifouling paint are in ordered alternation. The antifouling paint can effectively prevent fouling of ships in real time, is environment-friendly, and has long-term significance in the fields of marine environment, national defense safety and the like.

Description

technical field [0001] The present application belongs to the technical field of marine antifouling paints, relates to a degradable amphiphilic antifouling paint and a preparation method and application thereof, in particular to the preparation and application of an amphiphilic antifouling paint containing degradable materials. Background technique [0002] The early marine antifouling paint mainly relies on the release of metal or organic toxic materials in its paint film to stimulate and kill organisms attached to the bottom of the ship to achieve antifouling effect. Marine anti-fouling paint is generally applied on top of the bottom anti-rust paint, which is the outermost layer. As more and more people pay more attention to environmental issues, scientists have found that toxic materials such as organotin and pesticide DDT can seriously damage the marine ecological environment. Such antifouling paints are gradually banned in many countries. [0003] Since then, the antif...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D5/16C08G18/48C08G18/62C08G18/42C08G18/61C08G18/64
CPCC09D175/04C09D5/1662C08G18/4833C08G18/6279C08G18/4277C08G18/4063C08G18/4216C08G18/61C08G18/4018C08G18/4238C08G18/4283C08G18/428C08G18/6212C08G18/6484C08G18/4081
Inventor 庞烜林里孙志强李帅陈学思
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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