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Organic/inorganic hybrid modified graphene waterborne epoxy micaceous iron oxide intermediate paint as well as preparation method and application thereof

A technology of epoxy cloud iron and water-based epoxy emulsion, which is applied in epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve the problems of difficult graphene dispersion, improve shielding performance, good dispersion, and improve anti-sedimentation performance effect

Active Publication Date: 2022-07-22
鄂尔多斯市紫荆创新研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention combines graphene and silica sol to prepare graphene silica sol, and mixes it uniformly with water-based epoxy resin, which solves the problem of graphene being difficult to disperse in water-based epoxy resin

Method used

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  • Organic/inorganic hybrid modified graphene waterborne epoxy micaceous iron oxide intermediate paint as well as preparation method and application thereof
  • Organic/inorganic hybrid modified graphene waterborne epoxy micaceous iron oxide intermediate paint as well as preparation method and application thereof
  • Organic/inorganic hybrid modified graphene waterborne epoxy micaceous iron oxide intermediate paint as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1: Preparation of organic-inorganic hybrid modified graphene water-based epoxy micaceous iron intermediate paint

[0046] The first step: preparation of organic-inorganic hybrid graphene silica sol

[0047] X component includes: isopropanol (8mL) + tetraethyl orthosilicate TEOS (10mL) + silane coupling agent KH-560 (10mL) + graphene oxide (0.5mg);

[0048] Y component included: deionized water (1 mL) + isopropanol (7 mL).

[0049] (1) Set the specific surface area to 100-200m 2 / g, the proportion of -OH is less than 5%, 0.5 mg of graphene oxide with a particle size of 0.5 to 5 μm is added to 10 ml of silane coupling agent KH560, and the silane-modified graphene dispersion is prepared by circulating ultrasonic dispersion for 30 minutes;

[0050] (2) 8mL of isopropanol and 10mL of LTEOS were added to the silane-modified graphene dispersion, stirred at room temperature for 3-5min to make it evenly mixed, and NaOH was added to adjust the pH of the solution to pH9-...

Embodiment 2

[0067] Example 2: Preparation of organic-inorganic hybrid modified graphene water-based epoxy micaceous iron intermediate paint

[0068] The first step: preparation of organic-inorganic hybrid graphene silica sol

[0069] X component includes: isopropanol (8mL) + tetraethyl orthosilicate TEOS (10mL) + silane coupling agent KH-560 (10mL) + graphene oxide (0.5mg);

[0070] Y component includes: deionized water (1mL) + isopropanol (7mL)

[0071] (1) Set the specific surface area to 100-200m 2 / g, the proportion of -OH is less than 5%, 0.5 mg of graphene oxide with a particle size of 0.5 to 5 μm is added to 10 ml of silane coupling agent KH560, and the silane-modified graphene dispersion is prepared by circulating ultrasonic dispersion for 30 minutes;

[0072] (2) 8mL of isopropanol and 10mL of TEOS are added to the silane-modified graphene dispersion, stirred at room temperature for 3-5min to make it evenly mixed, and NaOH is added to adjust the pH of the solution to pH9-10 to ...

Embodiment 3

[0090] Example 3: Preparation of organic-inorganic hybrid modified graphene water-based epoxy micaceous iron intermediate paint

[0091] The first step: preparation of organic-inorganic hybrid graphene silica sol

[0092] X component includes: isopropanol (8mL) + tetraethyl orthosilicate TEOS (10mL) + silane coupling agent KH-560 (10mL) + graphene oxide (0.5mg);

[0093] Y component includes: deionized water (1mL) + isopropanol (7mL)

[0094] (1) Set the specific surface area to 100-200m 2 / g, the proportion of -OH is less than 5%, 0.5 mg of graphene oxide with a particle size of 0.5 to 5 μm is added to 10 ml of silane coupling agent KH560, and the silane-modified graphene dispersion is prepared by circulating ultrasonic dispersion for 30 minutes;

[0095] (2) 8mL of isopropanol and 10mL of LTEOS were added to the silane-modified graphene dispersion, stirred at room temperature for 3-5min to make it evenly mixed, and NaOH was added to adjust the pH of the solution to pH9-10 ...

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Abstract

The invention discloses organic / inorganic hybrid modified graphene waterborne epoxy micaceous iron oxide intermediate paint as well as a preparation method and application thereof, and belongs to the technical field of steel structure corrosion prevention. The graphene waterborne epoxy micaceous iron oxide intermediate paint comprises a component A and a component B, the component A comprises 60-80% of waterborne epoxy emulsion, 4% of ethylene glycol monobutyl ether and the balance of organic / inorganic hybrid graphene silica sol; and the component B comprises an epoxy curing agent, an anti-rust pigment filler, gray mica iron oxide, a dispersing agent, a defoaming agent, an anti-settling agent, a thickening agent, a flatting agent, ethylene glycol butyl ether acetate, ethylene glycol monobutyl ether and the balance of deionized water. The organic / inorganic hybrid graphene silica sol is applied to modification of the epoxy resin-based paint, so that the anti-settling performance of the water-based paint is improved; the graphene silica sol is good in dispersity in the washing coating, the film forming uniformity is improved, and the adhesive force and corrosion resistance of the epoxy micaceous iron oxide intermediate paint are greatly improved through the large lamellar structure of graphene.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion of steel structures, and in particular relates to an organic / inorganic hybrid modified graphene water-based epoxy micaceous iron intermediate paint and a preparation method and application thereof. Background technique [0002] Solvent-based two-component epoxy coatings have good corrosion resistance, but traditional epoxy resin coatings are mostly solvent-based, and the amount of organic solvent added is large, even reaching 80% (volume fraction). Volatile organic solvents (VOCs) do not participate in film formation, and will escape from the paint film after the coating dries, which not only pollutes the atmosphere but also causes serious harm to the human body. Due to the increasingly stringent environmental protection requirements, it is an inevitable trend of development for water-based epoxy coatings to replace solvent-based epoxy coatings. Due to the different film-forming mechanisms...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/45
CPCC09D163/00C09D5/08C09D7/45C08K2003/2272C08L87/005C08K3/22C08K3/013
Inventor 桂晓露高古辉孙丽娅邹亚丽易汉平
Owner 鄂尔多斯市紫荆创新研究院
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