Montmorillonite/graphene oxide composite nanosheet layer material modified epoxy resin anticorrosive paint as well as preparation method and application thereof

A graphene composite and epoxy resin technology, applied in the field of material science, can solve the problems of lack of chemical combination and inconspicuous synergistic effect, and achieve good corrosion protection performance

Active Publication Date: 2020-01-03
中科广化(重庆)新材料研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this physical blending method can disperse the two nanosheet materials in the epoxy resin coating, the lack of chemical combination between the two is likely to cause new interface problems, and the synergistic effect that can be exerted is not good. obvious

Method used

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  • Montmorillonite/graphene oxide composite nanosheet layer material modified epoxy resin anticorrosive paint as well as preparation method and application thereof
  • Montmorillonite/graphene oxide composite nanosheet layer material modified epoxy resin anticorrosive paint as well as preparation method and application thereof
  • Montmorillonite/graphene oxide composite nanosheet layer material modified epoxy resin anticorrosive paint as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Preparation of dispersion of organic amine-modified graphene oxide

[0053] Weigh 0.3 g of graphene oxide, add it into 200 g of methyl ethyl ketone, and undergo ultrasound for 6 hours to obtain a graphene oxide dispersion. Weigh 3 g of 1,10-decanediamine and dissolve it in 100 g of butanone to obtain a 1,10-decanediamine solution. Add the 1,10-decanediamine solution into the graphene oxide dispersion under the condition of 75°C and 350rpm mechanical stirring. Insulated for 5 hours to obtain a 1,10-decanediamine-modified graphene oxide dispersion. After the system is cooled, the product is centrifuged and washed to obtain 1,10-decanediamine-modified graphene oxide.

[0054] (2) Preparation of montmorillonite / graphene oxide composite nanosheet materials

[0055] Disperse the 1,10-decanediamine-modified graphene oxide obtained in step (1) in 100 g of butanone, add 30 mL of 1mol / L hydrochloric acid solution for protonation, and obtain protonated 1,10-decanediamine-mo...

Embodiment 2

[0070] (1) Preparation of dispersion of organic amine-modified graphene oxide

[0071] Weigh 0.2 g of graphene oxide, add it into 150 g of dioxane, and undergo ultrasound for 5 hours to obtain a graphene oxide dispersion. Weigh 10 g of diaminodiphenylmethane and dissolve in 50 g of dioxane to obtain a diaminodiphenylmethane solution. Add the diaminodiphenylmethane solution into the graphene oxide dispersion under the condition of 80° C. and 550 rpm mechanical stirring. Insulated for 6 hours to obtain a diaminodiphenylmethane-modified graphene oxide dispersion. After the system is cooled, it is centrifuged and washed to obtain diaminodiphenylmethane-modified graphene oxide.

[0072] (2) Preparation of montmorillonite / graphene oxide composite nanosheet materials

[0073] The diaminodiphenylmethane-modified graphene oxide obtained in step (1) is dispersed in 120g of dioxane, and hydrochloric acid solution is added for protonation to obtain protonated diaminodiphenylmethane-mod...

Embodiment 3

[0088] (1) Preparation of dispersion of organic amine-modified graphene oxide

[0089] Weigh 0.5 g of graphene oxide, add it into 1000 g of deionized water, and undergo ultrasound for 9 hours to obtain a graphene oxide aqueous dispersion. 25g of tetraethylenepentamine was weighed and dissolved in 100g of deionized water to obtain an aqueous solution of tetraethylenepentamine. Under the condition of 85° C. and 700 rpm mechanical stirring, the tetraethylenepentamine solution was added to the graphene oxide aqueous dispersion. The heat preservation reaction was carried out for 8 hours to obtain a tetraethylenepentamine-modified graphene oxide dispersion. After the system is cooled, it is centrifuged and washed to obtain tetraethylenepentamine-modified graphene oxide.

[0090] (2) Preparation of montmorillonite / graphene oxide composite nanosheet materials

[0091]Disperse the tetraethylenepentamine-modified graphene oxide obtained in step (1) in 1000g deionized water, add hydro...

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Abstract

The invention belongs to the technical field of material science, and particularly discloses montmorillonite/graphene oxide composite nanosheet layer material modified epoxy resin anticorrosive paintas well as a preparation method and application thereof. The anticorrosive paint comprises a component A and a component B. The component A comprises epoxy resin, a montmorillonite/graphene oxide composite nanosheet layer material, nano silicon dioxide, nano titanium dioxide, mica powder, a wetting dispersant and a solvent, and the component B comprises a curing agent, an antifoaming agent, a leveling agent and a solvent, wherein the mass ratio of the component A to the component B is 100: (20-100). Through an ion exchange reaction, the composite nano-powder material formed by mutual intercalation of two two-dimensional lamellar materials of modified montmorillonite and graphene is prepared. Compared with montmorillonite and graphene oxide which are independently used, the montmorillonite/graphene oxide composite nanosheet layer material can provide better corrosion protection performance for the epoxy resin paint.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a montmorillonite / graphene oxide composite nano-sheet material modified epoxy resin anticorrosion coating and a preparation method and application thereof. Background technique [0002] Epoxy resin coating is one of the most widely used anti-corrosion coatings. Epoxy resin coating has excellent chemical resistance, significant barrier effect on external corrosive media, good corrosion resistance, and good performance on various substrates. of adhesion. However, in harsh service environments such as marine environments, the corrosion resistance of epoxy resin coatings still needs to be improved. [0003] The addition of inorganic montmorillonite and organic montmorillonite with flaky layer structure to epoxy anti-corrosion coatings can effectively prolong the penetration path of external corrosive media in the coating, thereby increasing the barrier performan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/62
CPCC08K2003/2241C08K2201/011C09D5/08C09D163/00C09D7/61C09D7/62C09D7/70C08K13/06C08K9/04C08K7/00C08K3/346C08K3/042C08K3/36C08K3/22C08K3/34
Inventor 刘伟区刘春华梁利岩皮可
Owner 中科广化(重庆)新材料研究院有限公司
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