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Sustained-release silicone oil hydrogel and application thereof in marine antifouling coatings

A marine antifouling and hydrogel technology, applied in antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve problems such as self-repair cannot be achieved, shorten the self-repair cycle and increase branched chains Quantity, the effect of increasing rigidity

Active Publication Date: 2019-02-22
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The self-healing of the coating requires the help of external conditions, and self-healing cannot be achieved at room temperature

Method used

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  • Sustained-release silicone oil hydrogel and application thereof in marine antifouling coatings
  • Sustained-release silicone oil hydrogel and application thereof in marine antifouling coatings
  • Sustained-release silicone oil hydrogel and application thereof in marine antifouling coatings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of preparation of the hydrogel of slow-release silicone oil, the concrete steps of preparation are:

[0028] (1) At room temperature, add 20g of methyl methacrylate, 5g of N-methylolacrylamide, 20g of methyl silicone oil, and 0.1g of sodium lauryl sulfate into the emulsification disperser, and ultrasonically disperse with an ultrasonic disperser for 1h , and then add 1.2 g of azobisisobutyronitrile under stirring at a low speed of 280 r / min, and mix to obtain a premix.

[0029] (2) Add 150mL of water, 25g of acrylamide, and 0.1g of sodium lauryl sulfate into a four-necked reaction flask equipped with a stirrer, an addition funnel, a reflux condensing device, and a thermometer, stir and mix well, and heat up to 50°C , and then drop the premix into the mixed solution of acrylamide and sodium lauryl sulfate at a constant rate of 0.65mL / min, stir the mixed solution at a rate of 900r / min while adding it, and keep it at 50°C to continue The reaction was stirred for 10...

Embodiment 2

[0032] A kind of preparation of the hydrogel of slow-release silicone oil, the concrete steps of preparation are:

[0033] (1) At room temperature, add 18g methyl acrylate, 5g N-methylol acrylamide, 20g methyl silicone oil, 0.1g OP-10 into the emulsification disperser, stir at 3000r / min for 1h, then Add 1.2 g of azobisisoheptanonitrile under stirring at a speed of 1 / min, and mix uniformly to obtain a premix.

[0034] (2) Add 150mL of water, 23g of acrylamide, 5g of N-isopropylacrylamide, 0.1g of OP-10 into a four-necked reaction flask equipped with a stirrer, an addition funnel, a reflux condensing device, and a thermometer, and stir to mix Evenly, heat up to 50°C, then add the premixed mixture dropwise at a constant rate of 0.5mL / min to the mixed solution of acrylamide and N-isopropylacrylamide, and stir at a rate of 1400r / min while adding The solution was mixed, maintained at 50° C. and continued to stir for 10 h to obtain a hydrogel of slow-release silicone oil.

[0035] ...

Embodiment 3

[0037] A kind of preparation of the hydrogel of slow-release silicone oil, the concrete steps of preparation are:

[0038] (1) At room temperature, add 20g of methyl methacrylate, 3g of N-methylolacrylamide, 2g of N-isopropylacrylamide, 20g of methyl silicone oil, and 0.1g of TX-10 into an emulsifying disperser, and use Ultrasonic disperser was used for ultrasonic dispersion for 1 hour, then 1.3 g of benzoyl peroxide was added under stirring at a low speed of 280 r / min, and the mixture was uniformly mixed to obtain a premix.

[0039] (2) Add 150mL of water, 25g of acrylamide, and 0.1g of TX-10 into a four-necked reaction flask equipped with a stirrer, an addition funnel, a reflux condensing device, and a thermometer, stir and mix evenly, heat up to 50°C, and then The premix was added dropwise to the mixed solution of acrylamide and TX-10 at a constant rate of 0.6mL / min, and the mixed solution was stirred at a rate of 2000r / min while adding dropwise, and kept at 50°C for 10h to...

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Abstract

The invention relates to the technical field of self-repairing of antifouling coatings and discloses sustained-release silicone oil hydrogel and application thereof in marine antifouling coatings. Themonomers for preparing the hydrogel shell comprise acrylamide, N-hydroxymethyl acrylamide, N-isopropyl acrylamide and alkyl propionate or acrylate. The preparation method of the sustained-release silicone oil hydrogel disclosed by the invention is simple, feasible, high in safety and capable of realizing industrial production, and has great development potential. When applied to the marine antifouling coatings, the sustained-release silicone oil hydrogel is capable of improving the compatibility of the methyl silicone oil and other components of the coating, controlling the release rate of the methyl silicone oil in the coating and prolonging the validity of the effect of the methyl silicone oil, and contributes to maintaining the microstructure of the coating having the antifouling function, and the technical defects of the conventional methyl silicone oil application technology are overcome.

Description

technical field [0001] The invention relates to the technical field of self-repair of antifouling coatings, in particular to a hydrogel of slow-release silicone oil and its application in marine antifouling coatings. Background technique [0002] Silicone oil is a polyorganosiloxane with a chain structure, which is widely used, and one of its applications is marine antifouling coatings. Used as an additive in marine antifouling coatings, silicone oil can change the surface state of the coating, reduce the surface free energy of the coating, and make it difficult for marine organisms to adhere. However, the low polarity of silicone oil has very poor compatibility with other components of the coating, and it is prone to migration on the coating surface, which affects the performance and effectiveness of the antifouling coating. [0003] Chinese Patent Application Publication No. CN106928797A discloses a reversible self-repairing antibacterial acrylic coating, preparation and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/16C09D133/04C08F220/56C08F220/14C08F220/58C08F220/54
CPCC08F220/56C09D5/1668C09D5/1687C09D133/04C08F220/14C08F220/58C08F220/54C08L83/04
Inventor 徐焕志宋奕萱许康王冠良
Owner ZHEJIANG OCEAN UNIV
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