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Graphene-silver antibacterial and antifouling fluorocarbon coating, and preparation method and application thereof

A fluorocarbon coating and graphene technology, applied in the coating field, can solve the problems of growth defects and deformities of oysters, low output of natural antifouling agents, large environmental pollution, etc., to achieve improved gloss, stable antibacterial and antifouling performance, low surface energy effect

Pending Publication Date: 2018-12-07
洛阳双瑞防腐工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many types of antifouling coatings are still far from practical applications. Copper oxide, arsenic, and mercury oxide are very polluting to the environment, and organic tin can cause growth defects and deformities in oysters, as well as feminization of other marine organisms. , and the natural active antifouling agents extracted from animals and plants, such as ceramide, furan sesquiterpene, furan terpene, capsaicin, etc., must meet the following conditions in order to achieve wide application: first, it can extensively prevent biological adhesion; second , active natural antifouling agents are still active after being prepared into coatings; again, antifouling coatings prepared with natural antifouling agents must be able to withstand the test of harsh environments and the erosion of seawater
However, the natural antifouling agents extracted from animals and plants have very little output, are difficult to manufacture and are very expensive

Method used

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  • Graphene-silver antibacterial and antifouling fluorocarbon coating, and preparation method and application thereof
  • Graphene-silver antibacterial and antifouling fluorocarbon coating, and preparation method and application thereof
  • Graphene-silver antibacterial and antifouling fluorocarbon coating, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] (1) 10 parts of graphene oxide and 10 parts of polyethyleneimine were mixed, added to 50 parts of deionized water, then put into a three-necked bottle, and ultrasonically dispersed for 20 minutes to make graphene and polyethyleneimine evenly dispersed; then Stirring and reacting for 3 hours under the conditions of nitrogen flow and 300°C, after the reaction is completed, filter and dry to obtain aminated graphene powder;

[0064] (2) Mix 10 parts of the aminated graphene powder prepared in step (1) with 10 parts of silver nitrate, add to 50 parts of deionized water, then stir and react at 20°C for 10h, after the reaction is completed, filter and dry, Obtain graphene-silver composite nanomaterial; Wherein, figure 1 It is a transmission electron microscope image of graphene oxide, aminated graphene and graphene-silver composite nanomaterials. As can be seen from the figure, the graphene composite material obtained in this implementation is a single-layer sheet structure. ...

Embodiment 2

[0070] (1) 12 parts of graphene oxide and 12 parts of polyethyleneimine were mixed, added to 55 parts of deionized water, then put into a three-necked bottle, and ultrasonically dispersed for 25 minutes to make graphene and polyethyleneimine evenly dispersed; then Stir and disperse for 3.2 hours under the condition of nitrogen flow and 320°C. After the reaction is completed, filter and dry to obtain aminated graphene powder;

[0071] (2) Mix 12 parts of the aminated graphene powder prepared in step (1) with 12 parts of silver nitrate, add to 55 parts of deionized water, then stir and react at 25°C for 9h, after the reaction is completed, filter and dry, Obtain graphene-silver composite nanomaterial;

[0072] (3) Add 1 part of BYK-180 and 0.5 parts of EFKA-4010 wetting and dispersing agent, 1.5 parts of BYK-320 leveling agent, 1.5 parts of 6800 defoamer and 6 parts of organic bentonite thixotropic agent were then put into a high-speed disperser at 1300r / min for high-speed disp...

Embodiment 3

[0081] (1) 15 parts of graphene oxide and 15 parts of polyethyleneimine were mixed, added to 60 parts of deionized water, then put into a three-necked bottle, and ultrasonically dispersed for 30 minutes to make graphene and polyethyleneimine evenly dispersed; then Stirring and reacting for 3.5 hours under the condition of flowing nitrogen and 350°C, after the reaction is completed, filter and dry to obtain aminated graphene powder;

[0082] (2) Mix 15 parts of the aminated graphene powder prepared in step (1) with 15 parts of silver nitrate, add to 60 parts of deionized water, then stir and react at 30°C for 8h, after the reaction is completed, filter and dry, Obtain graphene-silver composite nanomaterial;

[0083] (3) Add 1 part of BYK-AT203 and 1 part of EFKA-5065 wetting and dispersing agent, 2 parts of TEGO-415 leveling agent, 2 parts BYK-054 defoamer, 2 parts of polyamide wax, 2 parts of organic bentonite and 4 parts of polyurea thixotropic agent, and then placed in a hi...

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Abstract

The invention belongs to the technical field of coatings, and specifically relates to a graphene-silver antibacterial and antifouling fluorocarbon coating, and a preparation method and an applicationthereof. The graphene-silver antibacterial and antifouling fluorocarbon coating comprises a component A and a component B, wherein the component A comprises the following components: fluorocarbon resin, a wetting dispersant, a leveling agent, an antifoaming agent, a thixotropic agent, a graphene-silver composite nanometer material, titanium dioxide, precipitated barium sulfate, quartz powder, butyl acetate and propylene glycol methyl ether acetate; and the component B comprises an isocyanate curing agent. According to the invention, due to introduction of the graphene-silver composite nanometer material, a paint film has good adhesion force, impact resistance, hydrophobicity, stable broad-spectrum antibacterial property and antifouling property; in addition, through selection of the fluorocarbon resin with a fluorine content of no less than 26%, glossiness, aging resistance and mechanical properties of the paint film are improved; meanwhile, low surface energy of the paint film is guaranteed; and the paint film prepared from the coating provided by the invention has strong hydrophobicity.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a graphene-silver antibacterial and antifouling fluorocarbon coating as well as its preparation method and application. Background technique [0002] A large number of microorganisms, marine plants and marine animals in the ocean will adsorb on the metal surface and grow and reproduce on the metal surface. This will not only reduce the speed of the ship, but also affect the maneuverability of the ship and increase fuel consumption. At the same time, it will also increase the corrosion of ships or underwater facilities and shorten their service life. One of the effective energy-saving means that people can take is to prevent or delay the adsorption and growth of these marine organisms on the metal surface, that is, to coat the surface of these underwater equipment with antibacterial and antifouling coatings. [0003] Common antibacterial antifouling coatings are main...

Claims

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Application Information

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IPC IPC(8): C09D5/14C09D5/16C09D127/12C09D7/61
CPCC08K2003/0806C08K2003/2241C08K2003/3045C08K2201/011C09D5/14C09D5/1687C09D127/12C08K3/042C08K3/08C08K3/22C08K3/30C08K3/36
Inventor 贾新乐董翔魏志龙魏浩然
Owner 洛阳双瑞防腐工程技术有限公司
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