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Preparation method of silicate-mineral-modified reduced graphene oxide, application of silicate-mineral-modified reduced graphene oxide

A technology of silicate minerals and graphene, which is applied in the direction of graphene, chemical instruments and methods, epoxy resin coatings, etc., can solve the problem of system instability or phase separation, improve corrosion resistance, improve incompatibility, The effect of the simple preparation process

Active Publication Date: 2017-10-20
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when reduced graphene oxide is applied to water-based coating systems, the high specific surface area of ​​reduced graphene oxide and the incompatibility with water-based film-forming resins often cause system instability or phase separation. It is difficult to solve the problem of maintaining the stability of the composite emulsion to achieve the composite of reduced graphene oxide and polymer emulsion under certain conditions.

Method used

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  • Preparation method of silicate-mineral-modified reduced graphene oxide, application of silicate-mineral-modified reduced graphene oxide

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: the preparation of silicate mineral modified reduced graphene oxide / polyacrylate modified epoxy resin emulsion composite water-based anticorrosion coating

[0023] (1) Preparation of Silicate Mineral Modified Reduced Graphene Oxide

[0024] a, Disperse 1g of graphene oxide powder in 500ml of water and ultrasonically mix, and disperse 1g of halloysite nanotubes in 500ml of water and mix. The two dispersions were then ultrasonically mixed.

[0025] b. Add 0.7 g of hydrazine hydrate to the mixed dispersion after mixing, and heat to 95° C. for 1 hour to react.

[0026] c. Add ethanol and water to the dispersion liquid obtained after the reaction for centrifugal washing, and vacuum-dry at 80° C. to obtain pure silicate mineral-modified reduced graphene oxide composite powder.

[0027] (2) Preparation of silicate mineral modified reduced graphene oxide / polyacrylate modified epoxy resin emulsion composite waterborne anti-corrosion coating

[0028] a, adding 0....

Embodiment 2

[0030] Embodiment 2: the preparation of silicate mineral modified reduced graphene oxide / polyacrylate modified epoxy resin emulsion composite water-based anticorrosion coating

[0031] (1) Preparation of Silicate Mineral Modified Reduced Graphene Oxide

[0032] a. Disperse 1g of graphene oxide powder in 500ml of water and ultrasonically mix, and disperse 1g of bentonite in 500ml of water and mix evenly. The two dispersions were then ultrasonically mixed.

[0033] Others are the same as in Example 1.

Embodiment 3

[0034] Embodiment 3: the preparation of silicate mineral modified reduced graphene oxide / polyacrylate modified epoxy resin emulsion composite water-based anticorrosion coating

[0035] (1) Preparation of Silicate Mineral Modified Reduced Graphene Oxide

[0036] a. Disperse 1g of graphene oxide powder in 500ml of water and ultrasonically mix, and disperse 1g of montmorillonite in 500ml of water and mix evenly. The two dispersions were then ultrasonically mixed.

[0037] Others are the same as in Example 1.

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Abstract

The invention discloses a preparation method of reduced silicate-mineral-modified reduced graphene oxide, application of the silicate-mineral-modified reduced graphene oxide, and belongs to the technical field of new materials. Stable silicate-mineral-modified reduced graphene oxide compound powder is prepared by adding a reducing agent and silicate mineral modifier into graphene oxide (GO) dispersion liquid, and compounding the silicate mineral modifier and reduced graphene oxide (rGO) under the action of a hydrogen bond according to a reduction-condensation method. The compound powder can be dispersed in water again, and is mixed with polymer emulsion through a direct blending manner to obtain stable compound emulsion which is used for preparing a waterborne anti-corrosion coating. The silicate-mineral-modified reduced graphene oxide is added, so that the anti-corrosion performance of the coating can be improved greatly, and the coating is free from falling, bubbles, rust and corrosion after soaked in the distilled water, sodium chloride solution, sulfuric acid solution and sodium hydroxide solution for 90 days.

Description

Technical field: [0001] The invention belongs to the technical field of new materials, and the invention provides a preparation method and application of silicate mineral modified reduced graphene oxide. Background technique: [0002] The preparation of water-based coatings uses water as the dispersion medium, which is environmentally friendly and meets the needs of national industrial development. Therefore, in order to improve the performance of water-based coatings, research on various modifications is currently attracting attention. After graphene is introduced into the polymer system, the prepared coating has a large leap in some properties. Such as CN103173095A, prepared a kind of graphene epoxy zinc-rich coating, obtained the coating of salt spray resistance performance more than 1000 hours, this method greatly reduces the thickness of coating under the premise of guaranteeing coating anticorrosion property excellent, reduces The amount of zinc powder. However, when...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D163/00C09D125/14C09D133/04C09C1/44C09C3/06C01B32/19
Inventor 李效玉贾艳玲邱藤
Owner BEIJING UNIV OF CHEM TECH
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