Antifouling hydrolysis degradation resin and application thereof

A degradable resin and antifouling technology, applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problems of small scouring effect, poor renewal effect, unsatisfactory antifouling effect, etc., and achieve cost Low cost, simple process, and the effect of solving the dependence of the speed

Active Publication Date: 2013-03-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of material has a certain dependence on the speed of the ship. Due to the small scouring effect of sea water and poor update effect in static state, th

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 12.5 g of polycaprolactone into a three-necked flask equipped with a stirrer and a thermometer, dehydrate at 120°C for 2 hours, cool down to 60°C, and add 100ml of tetrahydrofuran. Add 9.6g diphenylmethyl diisocyanate (MDI) then, stir reaction 40min under nitrogen protection, add macromolecular chain extender 10g based on triisopropyl silicon polyacrylate in the flask, react 50min, then add 1, After 4.8 g of 4-butanediol was reacted for 40 minutes, 0.24 g of dibutyltin dilaurate was added, the temperature was raised to 70°C, and the reaction was continued with stirring for 3 hours. Then it is coated on the epoxy glass fiber board, and there is no growth of marine organisms after hanging the board in shallow sea for 6 months.

Embodiment 2

[0031] Add 15g of polytrimethylene carbonate into a three-necked flask equipped with a stirrer and a thermometer, dehydrate at 120°C for 2h, then add 22g of toluene diisocyanate (TDI), stir and react for 30min under nitrogen protection, and add polyacrylic acid based three Isopropyl silicon ester macromolecular chain extender 60g, react for 30min, then add 1,4-butanediol 3g and react for 40min, then add 0.24g of dibutyltin dilaurate, continue stirring for 5h. Then it is coated on the epoxy glass fiber board, and there is no growth of marine organisms after hanging the board in shallow sea for 6 months.

Embodiment 3

[0033] Add 25 g of polylactide into a three-necked flask equipped with a stirrer and a thermometer, and add 200 ml of xylene. Then add 19.2g dicyclohexylmethane diisocyanate, stir and react for 1h, then add the macromolecular chain extender based on polytrimethylsilyl methacrylate and 1,4-butanediol small molecule chain extender in the flask together 26g, 0.4g of stannous octoate, the temperature was raised to 70°C, and the stirring reaction was continued for 3h to discharge.

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PUM

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Abstract

The invention relates to an antifouling hydrolysis degradation resin and a preparation method and application thereof. The antifouling hydrolysis degradation resin is prepared from the following raw materials in percent by weight: 15-100 percent of degradable polyols and 0-85 percent of diisocyanate and chain extender, wherein a molar ratio of the diisocyanate to the degradable polyols and the chain extender is 1.0-1.3. According to the invention, excellent hydrolysis property of a side chain silane ester and degradation property of a main chain are combined, a new surface can be updated through a hydrolysis degradation function without seawater flushing, the dependence of the traditional self-polishing material on the navigational speed is overcome, and antifouling requirements of a low-speed ship, a submarine and an offshore production platform are well met. In addition, due to the introduction of the diisocyanate and the chain extender, on the premise that the hydrolysis degradation property is controllable, excellent mechanical property and adhesive force of polyurethane are combined. The preparation method is simple in process and low in cost, is suitable for industrial production, and has a good application prospect in the field of preparation of sea antifouling coatings.

Description

technical field [0001] The invention belongs to the technical field of marine antifouling materials, in particular to an antifouling hydrolytic degradation resin and its application. Background technique [0002] Marine biofouling refers to the adhesion and growth of marine organisms on artificial surfaces such as hulls, aquaculture cages, and pipelines, causing huge harm to marine transportation and the exploration, development, and utilization of marine resources. For example, marine biofouling will increase the surface roughness and navigation resistance of the ship's hull, thereby increasing fuel consumption and carbon dioxide emissions, and aggravating the global warming effect; marine biofouling changes the surface state of the ship's hull and other marine facilities, thereby accelerating its Corrosion speed; marine biofouling reduces the speed of ships and weakens the combat effectiveness of the navy; marine biofouling also blocks the meshes of cage culture, causing l...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/65C08G18/32C09D175/04C09D175/06C09D175/08C09D5/16
Inventor 张广照马春风
Owner SOUTH CHINA UNIV OF TECH
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