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Microcapsule antifouling agent, preparation method thereof, antifouling coating and preparation method thereof

An anti-fouling paint and microcapsule technology, applied in anti-fouling/underwater paints, coatings, paints containing biocides, etc., can solve the problems of short anti-fouling time, low solubility of capsaicin, and fast release of capsaicin , to achieve good inhibitory effect, simple preparation method, and prolong the effect of antifouling period

Active Publication Date: 2019-10-22
中科美斯核涂料(烟台)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Chinese patent with publication number CN1709997A reports a kind of antifouling paint with capsaicin as antifouling agent, which has good antifouling effect, but the solubility of capsaicin in organic solvents is low, so it cannot be processed by slow release technology. Lead to fast release of capsaicin and short anti-fouling time

Method used

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  • Microcapsule antifouling agent, preparation method thereof, antifouling coating and preparation method thereof
  • Microcapsule antifouling agent, preparation method thereof, antifouling coating and preparation method thereof
  • Microcapsule antifouling agent, preparation method thereof, antifouling coating and preparation method thereof

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preparation example Construction

[0032] The present invention also provides a preparation method of the microcapsule antifouling agent described in the above technical solution, comprising the steps of:

[0033] mixing an alkaline buffer solution and a surfactant to obtain an aqueous phase;

[0034] Mix wolftoxin and oily solvent to obtain oily phase;

[0035] After the water phase and the oil phase are mixed, dopamine hydrochloride is added to carry out oxidative self-polymerization reaction to obtain the microcapsule antifouling agent.

[0036] The invention mixes the alkaline buffer solution and the surfactant to obtain the water phase.

[0037] In the present invention, the alkaline buffer solution is a Tris buffer solution with a pH value of preferably 8 to 9. The preparation method of the Tris buffer solution is not particularly limited in the present invention, and a suitable pH is obtained by using a conventional preparation method in the art. value. In the present invention, the Tris buffer soluti...

Embodiment 1

[0063] 150mL of Tris buffer solution with a pH value of 8.5 and 3g of cetyltrimethylammonium chloride were mixed to obtain an aqueous phase;

[0064] Mix 10mL of n-butanol and 0.1g of wolftoxin to obtain an oil phase;

[0065] After the water phase and the oil phase were mixed, 1 g of dopamine hydrochloride was added, stirred at room temperature (25° C.) at a speed of 400 rpm for 24 h, and then centrifuged at a speed of 10,000 rpm for 10 min to obtain a crude microcapsule antifouling agent, and then The crude microcapsule antifouling agent obtained by centrifugation was washed with deionized water for 3 times, and vacuum-dried at 45° C. to obtain the microcapsule antifouling agent.

[0066] Use a UV-visible spectrophotometer to test the ultraviolet absorbance of wolftoxin in the microcapsule antifouling agent, and obtain its concentration through the ultraviolet absorbance of wolftoxin. Specifically, test the absorbance of wolftoxin at different concentrations to obtain the co...

Embodiment 2

[0070] The microcapsule antifouling agent was prepared according to the method of Example 1, except that the dosage of dopamine hydrochloride was 2 g.

[0071] Using the method in Example 1, it was detected that the loading of wolfram toxin was 75%.

[0072] The average particle size of the microcapsule antifouling agent obtained in this embodiment is 270nm by scanning electron microscopy, and the average wall thickness of the microcapsule antifouling agent obtained in this embodiment is 34nm by transmission electron microscopy.

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Abstract

The invention provides a microcapsule antifouling agent, a preparation method thereof, an antifouling coating and a preparation method thereof and belongs to the technical field of ocean antifouling coatings. According to the microcapsule antifouling agent provided by the invention, polydopamine is adopted as a wall material, and a core material comprises stellerin and an oil solvent. The stellerin in the microcapsule antifouling agent provided by the invention can be extracted from stellera chamaejasme and is environmental-friendly; in addition, the microcapsule antifouling agent has a slow release function, and is capable of prolonging the antifouling period when being used as an antifouling coating; and in addition, as the stellerin is adopted as an active component, the obtained antifouling agent has a broad antifouling spectrum, and has a good inhibition function on growth of navicula tenera and porphyridium, and in addition, the microcapsule antifouling agent is simple in preparation method and applicable to industrial application.

Description

technical field [0001] The invention relates to the technical field of marine antifouling coatings, in particular to a microcapsule antifouling agent and a preparation method thereof, an antifouling coating and a preparation method thereof. Background technique [0002] Marine biofouling refers to the undesirable colonization of marine organisms (such as bacteria, algae, molluscs, etc.) on surfaces immersed in seawater, which can occur on any surface immersed in seawater. This kind of behavior will cause extremely adverse harm to the development of ocean-related fields. For example, the attachment of fouling organisms will accelerate the corrosion of the hull surface; the boundary resistance between the ship and the fluid will increase, and the navigation speed will decrease, which will lead to an increase in fuel consumption; in addition, different species of marine organisms will adhere to the surface of the hull and will be in different sea areas. Free migration poses a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/16C09D133/04
CPCC09D5/1625C09D133/04C08K5/1545
Inventor 周峰刘辉杨武芳裴小维
Owner 中科美斯核涂料(烟台)有限公司
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