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Degradation type marine anti-fouling material, preparation method and application thereof

A marine anti-fouling and stirring reaction technology, applied in the field of material chemistry, can solve the problems of unsatisfactory anti-fouling effect, destroying ecological balance, poor regeneration effect, etc., and achieves good surface self-renewal performance and mechanical performance, good application prospect, process simple effect

Inactive Publication Date: 2012-10-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has a certain dependence on the speed of the ship. Due to the small scouring effect of seawater in static state, the update effect is poor, resulting in unsatisfactory antifouling effect.
In addition, these materials need to be combined with cuprous oxide antifouling agents. Although copper is less harmful than organic tin, it will still accumulate in large quantities in the ocean, especially in harbors, resulting in the death of seaweed and other organisms, thereby destroying the ecological balance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 125g of hydroxyl-terminated polyethylene carbonate (molecular weight about 2000) into a three-necked flask with a stirrer and a thermometer, dehydrate at 120°C for 2 hours, cool down to 60°C, add 300ml of xylene and 96g of diphenylmethane Isocyanate, stirred and reacted for 30 minutes under the protection of nitrogen; then 29g of 1,4-butanediol and 0.5g of dibutyltin dilaurate were added to the flask, the temperature was raised to 70°C, and the stirred reaction was continued for 5 hours to obtain a degradable marine antifouling material.

[0027] The antifouling material prepared in Example 1 was coated on the epoxy glass fiber board, and tested after hanging the board in shallow sea for 6 months, the result showed no growth of marine organisms.

Embodiment 2

[0029] Add 250g of hydroxyl-terminated poly(caprolactone-ethylene glycol) (molecular weight is about 2000) into a three-necked flask with a stirrer and a thermometer, dehydrate at 80°C for 4h, cool down to 80°C, add 200ml of n-butanol and 60g of lysine Amino acid diisocyanate, stirred and reacted for 60 minutes under the protection of nitrogen; after the reaction, add 11g of 1,4-butanediol and 1.0g of stannous octoate to the flask, raise the temperature to 90°C, and continue to stir and react for 3 hours to obtain a degradable marine antifouling material .

[0030] The anti-fouling material prepared in Example 2 was coated on the epoxy glass fiber board, and tested after 10 months in the shallow sea, the result showed no growth of marine organisms.

Embodiment 3

[0032] Add 100g of poly(caprolactone-lactide) (molecular weight is about 5000) into a three-necked flask with a stirrer and a thermometer, dehydrate at 150°C for 2 hours, cool down to 70°C, add 200ml of tetrahydrofuran and 6.72g of hexamethylene di Isocyanate, stirred and reacted for 60 minutes under the protection of argon; after the reaction, 100g of hydroxyacrylic resin and 2.4g of dibutyltin dilaurate were added to the flask, the temperature was raised to 90°C, and the reaction was continued for 4 hours to obtain a degradable marine antifouling material.

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PUM

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Abstract

The present invention discloses a degradation type marine anti-fouling material, a preparation method and an application thereof. According to the present invention, a polyol with a characteristic of controllable degradation, isocyanate and a chain extender react to form a multi-block copolymer, wherein the multi-block copolymer can be degraded in seawater so as to flush a new surface, such that adhered marine organisms fall down; the multi-block copolymer can be applicable for preparation of a marine anti-fouling coat; the composition and the ratio of the polymers are adjusted to control crystallinity, and hydrophilicity / hydrophobicity of the polyol so as to effectively regulate degradation properties; with introductions of the isocyanate and the chain extender, excellent mechanical property and adhesion of the polyurethane are combined under the premise of assurance of controllable degradation performance; the degradation type marine anti-fouling material of the present invention can be dissolved in conventional xylene or an alcohol solvent, has good surface self-renewal performance and good mechanical properties, and does not contain any anti-fouling agents; and the method of the present invention has characteristics of simple process and low cost, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of material chemistry, and relates to a marine antifouling material and a preparation method thereof, in particular to a degradable marine antifouling material, a preparation method and an application thereof. Background technique [0002] Marine biofouling refers to the biological pollution caused by the continuous adhesion and reproduction of marine microorganisms, plants, and animals on the surface of facilities submerged in seawater, causing great harm to marine transportation and the exploration, development, and utilization of marine resources. For example, in the ship and marine aquaculture industry, marine biofouling seriously affects the speed of ship navigation and the production efficiency of cage culture, increases fuel consumption and carbon dioxide emissions, and intensifies the global greenhouse effect. [0003] With the increasingly stringent marine environmental protection regulations, marine antifou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/62C08G18/44C08G18/42C08G18/32C09D175/06C09D5/16
Inventor 张广照马春风徐立国
Owner SOUTH CHINA UNIV OF TECH
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