Marine steel structure surface antifouling and anticorrosion preparation and preparation method thereof

A formula, solvent-free technology, applied in anti-corrosion coatings, anti-fouling/underwater coatings, biocide-containing paints, etc., can solve the problems of poor performance and short life

Inactive Publication Date: 2018-05-29
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the shortcomings of existing traditional antifouling and anticorrosion coatings such as toxicity, poor performance, and short life. The present invention prepares a type of solvent-free composite film-forming resin emulsion through formula design, which is applied to both antifouling and anticorrosion The production of functional marine coatings provides a green biological anti-adhesion and anti-corrosion method for the anti-fouling and anti-corrosion of marine steel structure surfaces

Method used

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  • Marine steel structure surface antifouling and anticorrosion preparation and preparation method thereof
  • Marine steel structure surface antifouling and anticorrosion preparation and preparation method thereof
  • Marine steel structure surface antifouling and anticorrosion preparation and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] (1) Protamine emulsion: protamine 68g, tea saponin 27g, Tween (80) 0.7g, deionized water 1350g, room temperature, 3500rpm high-speed shear emulsification 7min, obtain protamine emulsion about 1400g, place Store in 4°C refrigerator for later use.

[0044] (2) Graphene oxide-protamine composite emulsion: 7 g of graphene oxide was mixed with 1350 g of protamine emulsion in step (1), and emulsified at 30° C. at 3500 rpm for 15 minutes at high-speed shear. Then add 23g of 50% glutaraldehyde aqueous solution, 14g of 98wt% concentrated sulfuric acid, stir and react at a constant temperature of 30°C for 2.5h, and cross-link to obtain a graphene oxide-protamine composite emulsion. The reaction is closed and the quality is basically not lost.

[0045] (3) Epoxy resin polyol: Bisphenol A type epoxy resin (E-44, average molecular weight 3100-7000) 230g and diethylamine 74g are evenly mixed, then reflux and stir at 70°C for 5h to obtain epoxy resin Polyol, closed reaction, basicall...

Embodiment 2

[0051] (1) Protamine emulsion: protamine 20, tea saponin 10g, Tween (80) 0.1g, deionized water 1000g, room temperature, 3000rpm high-speed shear emulsification for 5min, obtain protamine emulsion about 1000g, place Store in 4°C refrigerator for later use.

[0052] (2) Graphene oxide-protamine composite emulsion: 1 g of graphene oxide and 1000 g of protamine emulsion from step (1) were mixed, and emulsified at 30° C. under high-speed shear at 3000 rpm for 10 min. Then add 10 g of glutaraldehyde aqueous solution with a mass concentration of 50%, 5 g of 98 wt% concentrated sulfuric acid, and stir at a constant temperature of 30° C. for 1 hour to cross-link to obtain a graphene oxide-protamine composite emulsion. The reaction is closed and the quality is basically not lost.

[0053] (3) Epoxy resin polyol: bisphenol A type epoxy resin (E-44, average molecular weight 3100-7000) 180g mixed with diethylamine 45g evenly, then reflux and stir at 75°C for 3h to obtain epoxy resin Polyo...

Embodiment 3

[0059] (1) Protamine emulsion: protamine 105, tea saponin 60g, Tween (80) 3g, deionized water 1500g, room temperature, 4000rpm speed high-speed shear emulsification 10min, obtain protamine emulsion about 1600g, place Store in 4°C refrigerator for later use.

[0060] (2) Graphene oxide-protamine composite emulsion: 14 g of graphene oxide and 1600 g of protamine emulsion in step (1) were mixed, and emulsified at 30° C. at a speed of 4000 rpm for 15 minutes under high-speed shear. Then add 42 g of glutaraldehyde aqueous solution with a mass concentration of 50%, 21 g of 98 wt% concentrated sulfuric acid, and stir at a constant temperature of 30°C for 4 hours to cross-link to obtain a graphene oxide-protamine composite emulsion. The reaction is sealed and the quality is basically not lost.

[0061] (3) Epoxy resin polyol: Bisphenol A type epoxy resin (E-44, average molecular weight 3100-7000) 290g and diethylamine 130g are evenly mixed, then reflux and stir at 75°C for 3 hours to ...

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Abstract

The invention discloses a marine steel structure surface antifouling and anticorrosion preparation and a preparation method thereof. The emulsion is prepared from the following raw materials in partsby mass: 1100 to 1500 parts of a polyurethane monomer, 1000 parts of polyether glycol, 200 to 400 parts of an alcohol chain extender, 100 to 250 parts of a hydrophilic chain extender, 200 to 400 partsof epoxy resin polyol, 100 to 150 parts of triethylamine, 400 to 1000 parts of an acrylic ester monomer, 1000 to 1500 parts of graphene oxide-protamine composite emulsion and 5 to 20 parts of an initiator. The solvent-free type composite film-forming resin emulsion has antifouling and anticorrosion functions, is applied to production of an environment-friendly marine coating, and can protect thesurface of the marine steel structure and prevent bioattachment and marine corrosion.

Description

(1) Technical field [0001] The invention relates to a green biological antifouling anticorrosion preparation (composite resin), which can not only prevent the adhesion of organisms (microbes, shellfish, etc.) on the surface of steel structures, but also prevent corrosion. (2) Background technology [0002] The marine environment is a complex corrosive environment. The chemical and biological media in seawater, as well as the physical movement of seawater and marine atmosphere, cause great harm to steel structures. Marine corrosion starts from the surface of the steel structure, and localized corrosion such as galvanic corrosion, pitting corrosion, and crevice corrosion occurs in a small area. Marine corrosion has brought huge losses to national economic construction and seriously threatened the safety of marine engineering construction and use. With the deepening and expansion of marine development in the future, it will continue to face the challenge of new corrosion probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D7/20C09D5/16C09D5/08C08F283/00C08F220/14C08F220/18C08G18/76C08G18/66C08G18/65C08G18/48C08G18/58C08G18/64C08K9/02C08K3/04
CPCC08F283/006C08G18/12C08G18/4045C08G18/4825C08G18/58C08G18/6446C08G18/6541C08G18/6692C08G18/7614C08K3/04C08K9/02C09D5/08C09D5/1662C09D151/08C08G18/64C08F220/18C09D5/1637C08G18/6674C08G18/0823C09D175/04C08G18/348C09D175/08C09D7/65
Inventor 丁玉庭林东王彦波林龙周绪霞
Owner ZHEJIANG UNIV OF TECH
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