FG-coated MOF composite material, coating containing composite material, and preparation methods and application of coating

A technology of composite materials and composite coatings, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., to achieve the effect of improving the protective performance

Pending Publication Date: 2021-03-05
SHANDONG ZHONGSHAN PHOTOELECTRIC MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of interface compatibility between FG and resin existing in the prior art, the present invention provides a FG@MOF composite material, through which the epoxy resin can be modified, and the imidazole ring in the composite material can be modified. Chemical bonding with epoxy resin solves the interface compatibility problem between FG and epoxy resin and improves the corrosion resistance and mechanical properties of epoxy resin coating

Method used

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  • FG-coated MOF composite material, coating containing composite material, and preparation methods and application of coating
  • FG-coated MOF composite material, coating containing composite material, and preparation methods and application of coating
  • FG-coated MOF composite material, coating containing composite material, and preparation methods and application of coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of FG@ZIF-8 modified epoxy resin composite coating includes the following steps:

[0028] (1) Preparation of FG@ZIF-8 composite material: Disperse 0.117g of FG in anhydrous methanol, oscillate ultrasonically for 2-3 hours, and then add 0.5g of Zn(NO 3 ) 2 ·6H 2 O and 0.55g of 2-methylimidazole were added to the FG methanol dispersion, stirred for 2 hours to obtain a suspension, which was separated by centrifugation and washed alternately with methanol and deionized water for 4 times, and finally dried at 60°C for 12 hours to obtain a powder In this example, the molar ratio of zinc ions to 2-methylimidazole is 1:4, and the mass fraction of FG in all the raw materials participating in the reaction is 10%.

[0029] (2) Preparation of composite coating: mix epoxy resin, FG@ZIF-8 and diluent with a mass ratio of 10:0.5:8, wherein the diluent is a mixture of xylene and n-butanol, and xylene and n-butanol The mass ratio is 2:1; the ball mill is stirred for 0.5h,...

Embodiment 2

[0040] Preparation of FG@ZIF-7 modified epoxy resin composite coating includes the following steps:

[0041] (1) Preparation of FG@ZIF-7 composite material: Disperse 0.233g FG in anhydrous methanol, ultrasonically shake for 2-3h, and then add 0.5g ZnCl 2 and 0.433g of benzimidazole were added to the FG methanol dispersion, stirred for 2 hours to obtain a suspension, which was separated by centrifugation and washed alternately with methanol and deionized water for 4 times, and finally dried at 60°C for 12 hours to obtain powdered FG @MOF composite material, in this example, the molar ratio of zinc ions to benzoimidazole is 1:1, and the mass fraction of FG in all the raw materials participating in the reaction is 20%;

[0042] (2) Preparation of composite coating: mix epoxy resin, FG@ZIF-7 and diluent with a mass ratio of 10:2:10, wherein the diluent is a mixture of xylene and n-butanol, and xylene and n-butanol The mass ratio is 3:1; the ball mill is stirred for 0.5h, and then...

Embodiment 3

[0046] The preparation of aminated FG@ZIF-8 modified epoxy resin composite coating includes the following steps:

[0047] (1) Preparation of aminated FG@ZIF-8 composite material: Disperse 0.8g FG in anhydrous methanol, oscillate ultrasonically for 2-3h, then add 0.5g Zn(NO 3 ) 2 ·6H 2 O, 0.3g 2-methylimidazole and 0.4g 2-aminobenzimidazole were added to the FG methanol dispersion, stirred for 2h to obtain a suspension, which was centrifuged and washed 4 times alternately with methanol and deionized water, and finally in Dry at 60°C for 12 hours to obtain a powdered aminated FG@ZIF-8 composite material. In this example, the molar ratio of zinc ions to imidazole ligands is 1:4, and the mass fraction of FG in all the raw materials participating in the reaction is 40. %;

[0048] (2) Preparation of composite coating: mix epoxy resin, aminated FG@ZIF-8 and diluent with a mass ratio of 10:0.3:2, wherein the diluent is a mixture of xylene and n-butanol, and xylene and n-butanol T...

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Abstract

The invention belongs to the technical field of anticorrosive materials in a marine environment, and particularly relates to an FG-coated MOF composite material, a coating containing the composite material, and preparation methods and application of the composite material and coating. The preparation method of the coating comprises the following steps: dispersing FG in absolute methanol, carryingout ultrasonic oscillation, adding a metal salt and an imidazole ligand into an FG methanol dispersion liquid, conducting stirring to obtain a turbid liquid, carrying out centrifugal separation to obtain a solid, alternately conducting washing with methanol and deionized water, and carrying out vacuum drying to obtain an FG-coated MOF composite material; and mixing epoxy resin, the FG-coated MOF composite material and a diluent, carrying out ball-milling stirring, adding a curing agent, and conducting uniform mixing to obtain a composite coating. A composite coating layer is obtained by coating the surface of a pretreated metal matrix with the composite coating, and conducting drying and curing. The epoxy resin is modified by the FG-coated MOF composite material, so that an imidazole ringin the composite material is chemically bonded with the epoxy resin, the problem of interfacial compatibility between the FG and the epoxy resin is solved, and the corrosion resistance and the mechanical property of an epoxy resin coating are improved.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion materials in marine environments, and in particular relates to a FG@MOF composite material, a coating containing the composite material, a preparation method and application thereof. Background technique [0002] The marine environment is a typical high-temperature, high-humidity, high-salt spray, and high-irradiation area, so the marine environment places very strict requirements on the corrosion resistance of marine engineering materials. [0003] At present, organic coating is one of the most important anti-corrosion methods in the marine field. Fluorinated graphene (FG) is graphene through the fluorination of carbon atoms sp 2 hybridized into sp 3 hybridized, and retain part of the sp of graphene 2 structure. FG not only retains the characteristics of the two-dimensional planar structure of graphene, but also has the characteristics of low surface energy, strong hydrophobicity and h...

Claims

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Application Information

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IPC IPC(8): C08G83/00C08K9/00C08K3/04C09D163/00C09D5/08C09D7/62C09D7/65C09D7/20C08G59/44
CPCC08G83/008C08K9/00C08K3/042C09D163/00C09D5/08C09D7/62C09D7/65C09D7/20C08G59/44C08L87/00C08K9/08
Inventor 高秀磊窦宝捷张广志林修洲段松杜勇建孙金旭方治文
Owner SHANDONG ZHONGSHAN PHOTOELECTRIC MATERIAL CO LTD
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