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A preparation method of long-term stable amphiphilic antifouling coating based on mussel biomimetic

An antifouling coating, amphiphilic technology, applied in antifouling/underwater coatings, coatings, paints containing biocides, etc. The effect of rapid coupling reaction and simple synthesis conditions

Active Publication Date: 2021-08-31
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a method for preparing a long-term stable amphiphilic antifouling coating based on mussel bionics, to overcome the amphiphilic polymer in the prior art. Defects such as weak adhesion of the material

Method used

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  • A preparation method of long-term stable amphiphilic antifouling coating based on mussel biomimetic
  • A preparation method of long-term stable amphiphilic antifouling coating based on mussel biomimetic
  • A preparation method of long-term stable amphiphilic antifouling coating based on mussel biomimetic

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preparation example Construction

[0053] The preparation method of phosphate buffer saline (PBS): add potassium dihydrogen phosphate, dodecahydrate · disodium hydrogen phosphate, sodium chloride (NaCl, potassium chloride (KCl) according to the weight ratio of 1.38:18:40:1 into deionized water and configured as phosphate buffered saline (PBS) at pH 7.4.

[0054] Prepare fluorescein isothiocyanate FITC-labeled bovine serum albumin BSA solution (concentration is 0.01mol / L, pH=7.4) and phosphate buffer saline (PBS) of pH7.4, then soak the membrane sample in it after 24 hours Take it out, wash the surface of the membrane with deionized water several times, wipe off the liquid remaining on the surface with test paper, and observe the qualitative adsorption of protein on the membrane surface with a fluorescence microscope (BX-51, Japan Olympus); for quantitative testing, use the BCA kit for bovine serum The protein solution was used for standard curve determination, and then the samples were soaked in PBS buffer solu...

Embodiment 1

[0059] (1) Get 10 parts of sodium borate (the specific weight is 10 g), and dissolve 2 parts of sodium carbonate in 100 parts of deionized water, and get rid of the air therein. Take 3 parts of dopamine hydrochloride, dissolve in 15 parts of deionized water, dissolve 3 parts of methacrylic anhydride in 4.5 parts of tetrahydrofuran, add dropwise to the reaction solution, and then add 0.1mol / L sodium hydroxide solution to adjust the pH value to 8.5, react at 25°C for 36 hours. The reaction mixture was dissolved in 50 parts of ethyl acetate, and the solution was filtered to adjust the pH of the filtrate to 2.0. Extract three times with ethyl acetate, add 2 parts of anhydrous magnesium sulfate to the extracted mixed solution, concentrate the mixed solution after removing water for 12 hours, quickly pour 20 parts of n-hexane and ethyl acetate mixed solution (volume ratio 0.25) , freeze crystallization to obtain a white crystalline powder, dry it in a vacuum oven, and store it in a...

Embodiment 2

[0063] (1) Get 15 parts of sodium borate (the specific weight is 15g), dissolve 2 parts of sodium carbonate in 100 parts of deionized water, and get rid of the air therein. Take 3 parts of dopamine hydrochloride, dissolve in 15 parts of deionized water, dissolve 4 parts of methacrylic anhydride in 6 parts of tetrahydrofuran, add dropwise to the reaction solution, and adjust the pH value to 8.5, react at 30°C for 24 hours. The reaction mixture was dissolved in 50 parts of ethyl acetate, then the solution was filtered off, and the pH of the filtrate was adjusted to 2.0. Extract three times with ethyl acetate, add 2 parts of anhydrous magnesium sulfate to the extracted mixture, and remove water for 12 hours. Finally, the mixed solution is concentrated, quickly poured into a mixed solution of 25 parts of n-hexane and ethyl acetate (volume ratio 0.3), frozen and crystallized to obtain a white crystal powder, which is dried in a vacuum oven and stored in a vacuum. amides.

[0064...

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Abstract

The invention relates to a preparation method of a long-term stable amphiphilic antifouling coating based on mussel bionics. The method comprises: mixing dopamine hydrochloride, sodium borate, sodium carbonate and deionized water, adding dropwise methacrylic anhydride solution, and mixing the obtained dopamine methacrylamide with mercaptopolydimethylsiloxane and polyethylene glycol dimethicone Acrylates, photoinitiators, and solvents are mixed, coated onto a substrate, and cured by exposure to ultraviolet light. The process synthesis conditions of this method are simple, clean and environmentally friendly, and the crosslinking reaction induced by ultraviolet light is rapid and effective; the prepared coating has good mechanical properties and stability, and has a small degree of swelling in seawater environment and has excellent anti-corrosion properties. The adhesion effect of seaweed has potential application in marine antifouling materials.

Description

technical field [0001] The invention belongs to the field of preparation of antifouling coatings, in particular to a preparation method of long-term stable amphiphilic antifouling coatings based on mussel bionics. Background technique [0002] The ocean contains a variety of rich resources. In order to make full use of various resources in the ocean, human beings have built a large number of marine facilities for the development and utilization of marine resources. For example, offshore artificial drilling platforms, offshore signaling devices, offshore oil gathering and transportation equipment, and marine fishery equipment. At the same time, the globalization of economy and trade has also led to the rapid development of shipping, and maritime trade has become the most important transaction method in global trade. However, there are a large number of microorganisms, plants and animals in seawater, and these organisms will adhere to ships, ships and various marine equipment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D171/02C09D183/08C09D5/16C08G77/46
CPCC08G77/46C09D5/1675C09D171/02C09D183/08C08L83/08C08L71/02
Inventor 何春菊冯晓峰
Owner DONGHUA UNIV
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