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Microcapsule, preparation method thereof, bionic antifouling paint and bionic antifouling coating

A technology of microcapsules and antifouling agents, applied in the direction of microcapsule preparations, antifouling/underwater coatings, microsphere preparation, etc., can solve the problems of hydrophobicity and antifouling performance to be improved, and achieve good hydrophobicity and antifouling performance Performance and service life extension effect

Active Publication Date: 2017-08-22
上海暄洋化工材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, anti-fouling agents such as persimmon tannin, water-absorbing resin, and inorganic nano-silver oxide particles all have certain antibacterial and anti-fouling effects. After compounding and coating in polyacrylate, the coating can produce gradient levels of poisonous pollution. marine life effects on hulls, but their hydrophobicity and anti-fouling properties still need to be improved

Method used

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preparation example Construction

[0029] The present invention provides a kind of preparation method of microcapsule described in above-mentioned technical scheme, comprises the following steps:

[0030] mixing and emulsifying the capsule core raw material and emulsifier solution to obtain an emulsion; the capsule core raw material includes silicone oil or a mixture, and the mixture is a mixture of silicone oil and an antifouling agent;

[0031] After the pH value of the emulsion is adjusted to 8-9, urea, formaldehyde solution, cross-linking agent and curing agent are added for reaction to obtain microcapsules.

[0032] The microcapsules prepared by this method have a higher coating ratio.

[0033] The invention mixes and emulsifies the capsule core raw material and the emulsifier solution to obtain the emulsion.

[0034] Specifically, when the raw material of the capsule core is silicone oil, the preparation method of the microcapsules includes:

[0035] dissolving the emulsifier in deionized water to obtai...

Embodiment 1

[0065] Dissolve 5g of sodium dodecylbenzenesulfonate in 140mL of deionized water and stir to completely dissolve sodium dodecylbenzenesulfonate; under vigorous stirring, add 5g of silicone oil dropwise to the above-mentioned dodecylbenzenesulfonate Sodium acid sodium solution, after the dropwise addition, increase the rotating speed to 2000r / min, emulsify for 30min, and form a silicone oil emulsion; adjust the pH value of the emulsion to 8.5, then add 2.5g of urea, 6.5g of 37% formaldehyde solution, 0.28g of ammonium chloride and 0.28g of resorcinol initiate the polycondensation reaction, slowly raise the temperature of the solution to 50°C at a heating rate of 0.5°C / min, and finish the heat preservation for 4 hours. Finally, the reaction solution is cooled, filtered, and dried to obtain Free-flowing microencapsulated powder.

[0066] Dope the microcapsule powder prepared above into zinc acrylate resin to prepare an antifouling coating with a microcapsule content of 15%, sprea...

Embodiment 2

[0069] Dissolve 5g of gum arabic in 140mL of deionized water and stir to completely dissolve the gum arabic; under vigorous stirring, mix 5g of silicone oil and 1.2g of cuprous oxide evenly, and drop them into the above solution drop by drop. Rotate at a high speed to 2000r / min, emulsify for 30min, and form an emulsion; adjust the pH value of the emulsion to 8.5, then add 2.5g of urea, 6.5g of 37% formaldehyde solution, 0.28g of ammonium chloride and 0.28g of resorcinol to the flask Initiate the polycondensation reaction, slowly raise the temperature of the solution to 50°C at a heating rate of 1°C / min, and finish after 4 hours of heat preservation. Finally, the reaction solution is cooled, filtered, and dried to obtain free-flowing microcapsule powder.

[0070] Dope the microcapsule powder prepared above into zinc acrylate resin to prepare an antifouling coating with a microcapsule content of 15%, spread evenly on a glass slide with a thickness of 60 μm, and cure at 60°C for 3...

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Abstract

The invention provides a microcapsule, a preparation method thereof, a bionic antifouling paint and a bionic antifouling coating. The microcapsule comprises a capsule core and a capsule wall wrapping the capsule core, wherein the capsule core contains silicone oil or a mixture; the mixture is the mixture of the silicone oil and an anti-fouling agent; the anti-fouling agent is selected from one or more of cuprous oxide, isothiazolinone, zinc pyrithione, dichlofluanid, oxypyridone, oxypyridine zinc and Sea-Nine211; and the capsule wall is urea resin. The bionic antifouling paint prepared by mixing the microcapsule with a resin matrix has good hydrophobic property and anti-fouling property; and the service life of the paint is prolonged. The contact angle of the bionic antifouling coating reaches over 20 degrees; after three months, the slow-release efficiency of the microcapsule reaches over 50%; the bacteria adhesion amount of the bionic antifouling coating is 0.1-11%; and the algae adhesive amount is 1-21%.

Description

technical field [0001] The invention relates to the technical field of antifouling coatings, in particular to a microcapsule, a preparation method thereof, a bionic antifouling coating and a bionic antifouling coating. Background technique [0002] Biofouling refers to marine organisms such as algae, shellfish, and plankton attached to the bottom of a ship and the surface of underwater buildings, and after multiplying in large numbers, they accumulate dirt on the surface of the attachments, causing the surface environment to change, resulting in attachments performance degradation or even destruction. [0003] Marine fouling organisms increase the frictional resistance of ships, increase fuel consumption, and cause huge economic losses to human beings. Marine antifouling coatings are one of the most important varieties of marine vessel coatings, and antifouling agents play a key role in the prevention and control of marine fouling organisms in marine antifouling coatings. ...

Claims

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Application Information

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IPC IPC(8): C09D5/16C09D7/12C09D133/02C09D133/00C09D127/18C09D183/04C09D175/04B01J13/14
CPCB01J13/14C08K2003/2248C08L2205/025C08L2205/03C08L2205/035C09D5/1618C09D5/1625C09D5/1687C09D133/00C09D133/02C09D175/04C09D183/04C08L83/04C08L61/34C08K9/10C08K3/22C08K5/43C08L27/18C08K5/47C08K5/36
Inventor 汪国庆李玉
Owner 上海暄洋化工材料科技有限公司
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