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Dual-network organosilicon hydrogel/nanometer silver composite material, and preparation method and applications thereof

A composite material and silicone technology, applied in antifouling/underwater coatings, coatings, biocide-containing paints, etc., can solve the problem of poor binding ability, difficulty in large-scale preparation of hydrogel, and not suitable for large-scale applications Coating and other problems, to achieve the effect of simple preparation process, conducive to large-scale production and coating

Active Publication Date: 2018-11-30
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, CN102633956A discloses a method for amide-modified polyvinyl alcohol porous hydrogel, which is placed in the marine environment after the hydrogel is placed in the culture solution of marine antifouling bacteria to achieve swelling equilibrium, and the marine fouling organisms During the peak growth season, there is basically no attachment of fouling organisms, but the mechanical properties of the hydrogel are relatively poor, and the ability to bind to the matrix is ​​poor
In addition, the existing hydrogels are difficult to prepare on a large scale, so they are not suitable for large-scale painting

Method used

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  • Dual-network organosilicon hydrogel/nanometer silver composite material, and preparation method and applications thereof
  • Dual-network organosilicon hydrogel/nanometer silver composite material, and preparation method and applications thereof
  • Dual-network organosilicon hydrogel/nanometer silver composite material, and preparation method and applications thereof

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preparation example Construction

[0034] The preparation method of the dual-network organosilicon hydrogel / nano-silver composite material provided by one aspect of the embodiments of the present invention comprises:

[0035] providing a first mixture, the first mixture comprising uniformly mixed silver ions, a hydrophilic polymer containing a sulfur-containing functional group, and an organic solvent;

[0036] uniformly mixing the first mixture with a silicone resin and a crosslinking agent to form a second mixture;

[0037] The second mixture is cured at room temperature, and then irradiated with ultraviolet light or sunlight to obtain the double network silicone hydrogel / nano-silver composite material.

[0038] In some embodiments, the hydrophilic polymer comprises the following structural units:

[0039]

[0040] Wherein m is any integer from 2 to 30, and R has at least the structure shown in any one of the following formula (II) and formula (III):

[0041]

[0042] Preferably, the hydrophilic polym...

Embodiment 1

[0073] Embodiment 1: the raw material that this embodiment adopts comprises the polymer that has structural unit shown in following formula:

[0074]

[0075] Where m / n=1:15, Mn=6104.

[0076] The preparation method of a kind of double network organosilicon hydrogel / nano-silver composite material of the present embodiment comprises: take above-mentioned polymer 1.5g and dissolve in 6mL ethanol, then add 0.5g / mL silver trifluoromethanesulfonate ethanol Mix 500 μL of the solution evenly, add the above mixed solution to the mixed solution of 100 g of silicone resin with a viscosity of 750 Pa.s and 10 g of crosslinking agent triacetoxymethylsilane; stir mechanically for 40 minutes to fully mix, vacuum After degassing for 5 minutes, the coating was applied to pre-blasted epoxy panels to obtain an antifouling coating, after which the resulting coating was exposed to UV light for 4 hours or sunlight for one day. Take the coating finally obtained in this example and the blank epox...

Embodiment 2

[0077] Embodiment 2: the raw material that this embodiment adopts comprises the polymer that has structural unit shown in following formula:

[0078]

[0079] Where m / n=1:15, Mn=6104.

[0080] The preparation method of a kind of double network organosilicon hydrogel / nano-silver composite material of the present embodiment comprises: take above-mentioned polymer 1.5g and dissolve in 6mL ethanol, then add 0.5g / mL silver trifluoromethanesulfonate ethanol 500 μL of the solution was mixed evenly, and the above mixed solution was added to a mixed solution of 100 g of a silicone resin with a viscosity of 750 Pa.s and 10 g of a crosslinking agent triacetoxymethylsilane. Stir mechanically for 40 minutes to fully mix, vacuum defoam for 5 minutes, apply this coating on a pre-sandblasted epoxy board to obtain an antifouling coating, and then irradiate the coating under a UV lamp for 4 hours Or a day in the sun. Take the coating finally obtained in this example and a blank epoxy subst...

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Abstract

The invention discloses a dual-network organosilicon hydrogel / nanometer silver composite material, and a preparation method and applications thereof. The dual-network organosilicon hydrogel / nanometersilver composite anti-fouling paint comprises a first network comprising a polysiloxane elasticity network constructed based on condensation and polymerization of silicon hydroxyl, and a second network comprising a hydrophilic hydrogel network constructed through chelating of silver nanometer particles with acetyl thioester bonds. According to the preparation method, organic combination of the organosilicon system with the hydrogel system is realized, the polysiloxane elasticity network structure is capable of protecting the hydrogel system preferably; migration of the hydrogel structure in awater phase onto the surface of the organosilicon system surface, and formation of a hydrophilic hydration film are realized; the hydration film is capable of inhibiting adhesion of fouling organisms,avoiding exposure of silver element; and in addition, the organosilicon elastomer low in surface energy is beneficial for removing of the adhered microorganisms under water flow shearing action, andexcellent anti-marime fouling performance is achieved.

Description

technical field [0001] The invention relates to a nano-composite material, in particular to a double-network organosilicon hydrogel / nano-silver composite material, a preparation method and application, and belongs to the technical field of antifouling material preparation. Background technique [0002] Marine biofouling has a major adverse effect on people's maritime activities. A large number of algae and mussels adhere to the bottom of the ship, increasing the weight of the hull, increasing the resistance of the hull during navigation, and greatly increasing fuel consumption and greenhouse gas emissions. , Sometimes it will affect marine survey equipment and reduce its work efficiency. [0003] The research on existing antifouling technology generally focuses on the addition of toxic or irritating substances such as organotin, cuprous oxide, capsaicin, etc. to antifouling coatings. However, while some toxic substances (such as organotin) kill marine fouling organisms, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D133/24C09D5/16C09D7/63C08J3/075C08J3/28
CPCC08J3/075C08J3/28C08J2383/04C08J2433/24C08L2205/04C08L2312/08C09D5/1625C09D5/1668C09D5/1675C09D5/1687C09D183/04C08L33/24C08K5/42C08K5/5419
Inventor 姜道义刘志雄乌学东蒲吉斌王立平赵文杰
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI