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Transparent antifouling patch as well as preparation method and application thereof

An anti-fouling and patch technology, applied in the direction of film/sheet adhesive, adhesive type, amide/imide polymer adhesive, etc., can solve the problem of poor light transmission of hydrogel question

Active Publication Date: 2021-10-15
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN201910440525.X discloses a hydrogel composed of a hydrophilic network and a hydrophobic network for marine antifouling, and Chinese patent CN202010652873.6 discloses a high-adhesion hydrogel coating, but the existing Hydrogel has the problem of poor light transmission

Method used

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  • Transparent antifouling patch as well as preparation method and application thereof
  • Transparent antifouling patch as well as preparation method and application thereof
  • Transparent antifouling patch as well as preparation method and application thereof

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preparation example Construction

[0030] The invention provides a method for preparing a transparent antifouling patch, comprising the following steps;

[0031] Mix polyvinyl alcohol, water and glycerin and freeze to obtain a hydrogel;

[0032] Mixing the hydrogel with a tannic acid solution for pretreatment to obtain a pretreated hydrogel;

[0033] The pretreated hydrogel was treated with soluble Cu 2+ Salt solution treatment to obtain a hydrogel substrate;

[0034] mixing dopamine methacrylamide and hydrophobic monomers for free radical polymerization to obtain adhesives containing phenolic hydroxyl groups, the hydrophobic monomers being methoxyethyl acrylate or methyl methacrylate;

[0035] Mixing the adhesive glue containing phenolic hydroxyl groups with an organic solvent to obtain an adhesive glue solution;

[0036] Coating the adhesive glue solution on one side of the hydrogel base to obtain the transparent antifouling patch.

[0037] The invention mixes polyvinyl alcohol, water and glycerin and fre...

Embodiment 1

[0067] Weigh 10 parts of polyvinyl alcohol (the average degree of polymerization is 1750), 40 parts of glycerin, and 50 parts of deionized water are placed in a flask, and heated to reflux to dissolve the PVA. Then pour the obtained solution between the glass templates, the gap height is 0.36mm, put it into the environment of -30°C and freeze it, take it out after standing for 12 hours, and then freeze it after thawing at room temperature (-30°C, 12 hours) , to obtain polyvinyl alcohol hydrogel.

[0068] A 1% tannic acid solution was prepared, and the obtained hydrogel was soaked in the tannic acid solution for 1 hour. Configure 0.1mol / L CuCl 2 solution, the hydrogel treated with tannic acid was put into CuCl 2 solution, soak for 5min. 7.5g of methoxyethyl acrylate, 1.7g of dopamine methacrylamide and 106mg of azobisisobutyronitrile were added to 20mL of dimethylformamide for radical polymerization at 70°C to obtain an adhesive glue. The adhesive glue was dissolved in dich...

Embodiment 2

[0070] Weigh 10 parts of polyvinyl alcohol (average degree of polymerization: 1750), 50 parts of glycerin, and 40 parts of deionized water into a flask, set up a reflux condensation device, and heat to 135°C to dissolve PVA. Then pour the obtained solution between the glass templates, the gap height is 0.36mm, put it into the environment of -30°C and freeze it, take it out after standing for 12 hours, and then freeze it after thawing at room temperature (-30°C, 12 hours) , to obtain polyvinyl alcohol hydrogel.

[0071] A 1% tannic acid solution was prepared, and the obtained hydrogel was soaked in the tannic acid solution for 1 hour. Configure 0.1mol / L CuCl 2 solution, the hydrogel treated with tannic acid was put into CuCl 2 Solution, soak for 1h. 7.5g of methoxyethyl acrylate, 1.7g of dopamine methacrylamide and 106mg of azobisisobutyronitrile were added to 20mL of dimethylformamide for radical polymerization at 70°C to obtain an adhesive glue. The adhesive glue is disso...

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Abstract

The invention provides a transparent antifouling patch as well as a preparation method and application thereof, and belongs to the technical field of antifouling materials. The preparation method comprises the following steps: preparing a glycerol-containing transparent PVA hydrogel sheet by using a freezing method, pretreating the hydrogel by using tannic acid, introducing Cu < 2 + > with an antifouling effect by using tannic acid, and coating one surface of the hydrogel with the prepared phenolic hydroxyl-containing adhesive, thereby finally obtaining the asymmetric adhesive transparent patch with the antifouling function. The transparent antifouling patch prepared by the invention has relatively high light transmittance, relatively high underwater adhesion performance, excellent mechanical strength and biological and oil pollution prevention performance, can be applied to the surface of a numerical value display part of marine monitoring equipment, and can effectively prevent the problem of marine fouling caused by algae, oil stains and the like in the sea on a lens.

Description

technical field [0001] The invention relates to the technical field of antifouling materials, in particular to a transparent antifouling patch and its preparation method and application. Background technique [0002] The ocean contains immeasurable resources, and the development and utilization of ocean resources has become an important development strategy for many countries. However, marine industry and marine activities inevitably encounter the problem of marine pollution. Due to the attachment of marine microorganisms, the hull becomes rough and the weight increases, resulting in a significant increase in sailing resistance and fuel consumption, resulting in billions of dollars in economic losses and an increase in greenhouse gases every year. Marine organisms attached to the hull may also invade new sea areas and compete with original organisms, thereby affecting the ecological balance. Crude oil spills occur frequently, and tens of millions of tons of crude oil are r...

Claims

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Application Information

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IPC IPC(8): C09J7/24C09J133/14C08J3/075C08L29/04
CPCC09J7/245C09J133/24C08J3/075C08J2329/04C09J2301/122C09J2429/006C09J2433/00
Inventor 周峰冯海燕于波杨武芳麻拴红马延飞
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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