A kind of graphene composite coating, graphene composite coating and preparation method thereof

A graphene composite, graphene technology, applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of poor coating protection effect, easy to agglomerate, etc., achieve good water permeability, inhibit surface adsorption, good dispersion effect

Active Publication Date: 2018-12-25
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when graphene is directly added to polymers or resins, graphene is prone to agglomeration due to π-π conjugation and van der Waals adsorption, and it is difficult to uniformly disperse in polymers or resins, resulting in micro Pores remain, resulting in less protective coating

Method used

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  • A kind of graphene composite coating, graphene composite coating and preparation method thereof
  • A kind of graphene composite coating, graphene composite coating and preparation method thereof
  • A kind of graphene composite coating, graphene composite coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The embodiment of the present invention provides a preparation method of graphene composite coating. The method comprises the steps of:

[0030] Step (1): Disperse the aniline oligomer and graphene in a dispersion medium, mix the aniline oligomer and graphene uniformly and form a π-π bond between the aniline oligomer and graphene to obtain a graphene dispersion . The aniline oligomer has good solubility and can be dissolved in the dispersion medium. The aniline oligomer is used to modify the graphene. Specifically, since the benzene ring in the aniline oligomer is similar in structure to graphene, the aniline oligomer can form a π-π bond with graphene to achieve uniform mixing with graphene. It should be pointed out that the formation of π-π bonds between aniline oligomers and graphene is different from chemical grafting modification, which does not destroy the structure of graphene itself, and is also different from physical coating of graphite. Graphene polymers w...

Embodiment 1

[0041] With 1.0g aniline trimer (synthetic process sees figure 1 ) and 1.0 g of graphene (purchased from Ningbo Moxi Technology Co., Ltd.) were dispersed in 1.0 L of toluene solution and ultrasonically dispersed for 1 hour to obtain a graphene dispersion. The content of graphene in toluene after modified by aniline trimer reaches 1g / L. The comparative effect of described graphene dispersion liquid and untreated graphene after toluene dispersion sees figure 2 . The electron transmission electron micrograph of described graphene dispersion liquid sees image 3 . Depend on figure 2 and image 3 It can be seen that graphene can be uniformly dispersed in toluene after being modified by aniline trimer, and the graphene in the graphene dispersion liquid has a sheet-like structure.

[0042] The graphene dispersion was added to 45 g of epoxy resin (model E44, purchased from Jiangsu Wujiang Heli Resin Factory), and mixed to obtain mixture A. Then add 2g leveling agent, 4g defoa...

Embodiment 2

[0044] 2.0 g of aniline tetramer and 1.0 g of graphene were dispersed in 1.0 L of toluene solution, and ultrasonically dispersed for 1 hour to obtain a graphene dispersion. The content of graphene in toluene after modified by aniline tetramer reached 1g / L.

[0045] Add the graphene dispersion to 46g epoxy resin ((model is E44, purchased from Jiangsu Wujiang Heli Resin Factory), mix to obtain mixture A. Then add 1g leveling agent, 1g Defoamer, 1g anti-settling agent and 46g polyamide curing agent are stirred evenly to obtain the graphene composite coating.

[0046] The obtained graphene composite coating is coated on a carbon steel substrate, and after the toluene volatilizes, the graphene composite coating is obtained.

[0047] In order to compare the experimental effects, the epoxy resin coating of Comparative Example 1 was also prepared. The preparation method of the epoxy resin coating described in Comparative Example 1 is the same as in Example 2, except that no graphene...

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Abstract

The invention provides a graphene composite paint, which is composed of resin, graphene, an aniline oligomer, a dispersion medium, and a paint assistant. In the graphene composite paint, the mass percentage of graphene is 0.01%-5%, and the graphene is uniformly dispersed in the resin by forming a Pi-Pi bond with the aniline oligomer. The invention also provides a preparation method of the graphene composite coating and the graphene composite coating.

Description

technical field [0001] The invention relates to an anti-corrosion coating and an anti-corrosion coating, in particular to a graphene-based graphene composite coating, a graphene composite coating and a preparation method thereof. Background technique [0002] Anti-corrosion coatings refer to paints and coatings that can prevent corrosion of metals. In recent years, the country has been increasing investment in seven-tenths of the earth's oceans. Anti-corrosion coatings have become an important new force in the field of coatings. Anti-corrosion coatings are playing an increasingly important role and have promising development prospects. The current common anti-corrosion coatings include epoxy resin coatings, phenolic epoxy coatings, polyurethane anti-corrosion coatings, etc. Such coatings generally use high-molecular polymers or resins, which will leave micropores during the film formation process. In actual use, the corrosive medium will gradually penetrate through the micr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D7/62C09D5/08C09C1/46C09C3/08
Inventor 余海斌刘栓赵海超顾林戴雷
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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