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Ionic liquid modified graphene composite anticorrosive wear-resistant coating and preparation method and application thereof

A graphene composite and ionic liquid technology, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of reducing the corrosion resistance and poor dispersion of composite coatings, and achieve excellent corrosion resistance and wear resistance, Solve the effect of easy reunion and environmental friendliness

Active Publication Date: 2020-05-29
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersion of graphene in epoxy resin is poor. Due to its high specific surface area, it is easy to reduce energy by self-polymerization to improve stability. The agglomeration of graphene will greatly reduce the composite coating. corrosion resistance

Method used

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  • Ionic liquid modified graphene composite anticorrosive wear-resistant coating and preparation method and application thereof
  • Ionic liquid modified graphene composite anticorrosive wear-resistant coating and preparation method and application thereof
  • Ionic liquid modified graphene composite anticorrosive wear-resistant coating and preparation method and application thereof

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[0034] Another aspect of the embodiments of the present invention also provides the preparation method of the aforementioned ionic liquid modified graphene composite anti-corrosion and wear-resistant coating, which includes:

[0035] reacting 1-ethylimidazole with 1,8-dibromooctane to obtain an ionic liquid, and modifying the graphene with the ionic liquid to obtain the ionic liquid-modified graphene;

[0036] The ionic liquid modified graphene, curing agent, epoxy resin, and diluent are uniformly mixed to form the ionic liquid modified graphene composite anti-corrosion and wear-resistant coating.

[0037] In some more specific embodiments, the preparation method includes:

[0038] The mixed reaction system comprising 1-ethylimidazole, 1,8-dibromooctane and the first solvent is reacted at 80-90° C. for 5-10 hours, and then post-treated to obtain the ionic liquid.

[0039] Further, the first solvent includes ethanol, but is not limited thereto.

[0040] Further, the mass rati...

Embodiment 1

[0056] In this embodiment, the metal substrate is Q235 carbon steel, and the ionic liquid modified graphene composite anti-corrosion and wear-resistant coating is prepared on the surface of the carbon steel. The specific steps are as follows:

[0057] (1) 1-ethylimidazole and 1,8-dibromooctane were reacted in ethanol at 80°C for 10 hours, condensed and refluxed, and other reactant impurities were removed to obtain an ionic liquid (IL). The reaction route is as follows:

[0058]

[0059] (2) 10 mg ionic liquid (IL) and 10 mg graphene (G) were dissolved in 20 ml of ethanol, and ultrasonically vibrated to prepare ionic liquid modified graphene (IL-G);

[0060] (3) Mix 0.1 parts by weight of ionic liquid modified graphene with 10 parts by weight of polyamide water-based curing agent to form component 1; get 40 parts by weight of epoxy resin E51 and 1 part by weight of xylene diluent to mix to form component 1 Divide into two; mix component one and component two to prepare ionic...

Embodiment 2

[0064] In this embodiment, the metal substrate is Q235 carbon steel, and the ionic liquid modified graphene composite anti-corrosion and wear-resistant coating is prepared on the surface of the carbon steel. The specific steps are as follows:

[0065] (1) 1-ethylimidazole and 1,8-dibromooctane were reacted in ethanol at 90°C for 5 hours, condensed and refluxed, and other reactant impurities were removed to obtain an ionic liquid;

[0066] (2) 20mg ionic liquid and 10mg graphene powder were dissolved in 20ml of ethanol, and ultrasonically vibrated to obtain ionic liquid modified graphene;

[0067] (3) Mix 0.1 parts by weight of ionic liquid modified graphene with 10 parts by weight of polyamide water-based curing agent to form component 1; get 40 parts by weight of epoxy resin E51 and 1 part by weight of xylene diluent to mix to form component 1 Divide into two; mix component one and component two to prepare ionic liquid modified graphene composite anti-corrosion and wear-resis...

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Abstract

The invention discloses an ionic liquid modified graphene composite anticorrosive wear-resistant coating and a preparation method and application thereof. The ionic liquid modified graphene compositeanticorrosive wear-resistant coating comprises an ionic liquid modified graphene, a curing agent, epoxy resin and a diluent are used as fillers, the ionic liquid modified graphene is prepared by modifying graphene with an ionic liquid, and the ionic liquid is prepared by reacting 1-ethylimidazole with 1, 8-dibromooctane. The anticorrosive wear-resistant coating prepared by the invention effectively reduces the agglomeration phenomenon of graphene, shows excellent corrosion resistance and wear resistance, is simple and efficient in preparation method, and can be widely applied to metal protective collars of marine equipment, ship equipment, nuclear power industry and the like.

Description

technical field [0001] The invention belongs to the technical field of surface protection, and in particular relates to an ionic liquid modified graphene composite anti-corrosion and wear-resistant coating and its preparation method and application. Background technique [0002] The 21st century is the century of the ocean, and the ocean strategy has risen to a national strategy. A large number of marine villages and marine facilities have been serving in harsh marine environments for a long time, and the problem of material corrosion and wear is particularly critical. Organic coating is a commonly used protective method. By forming a dense covering layer on the surface of metal materials, the metal is isolated from corrosive media to achieve the purpose of protecting metal materials. Generally, organic coatings will have certain defects, such as micropores, microcracks, etc., during the curing film formation and service period, which greatly reduce its protective performan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/62
CPCC09D5/08C09D163/00C09D7/62C08K9/04C08K3/042
Inventor 杨振东毛飞雄
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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