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Inorganic high-temperature fused salt corrosion resistant graphene paint and preparation method thereof

An inorganic high temperature resistance and molten salt corrosion technology, applied in the field of coatings, can solve the problems of poor compactness, long construction period, high cost of 45CT, etc., and achieve the effect of stable performance and high bonding strength

Inactive Publication Date: 2019-04-26
SHENZHEN GUOCHUANG JIAWEI GRAPHENE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are very limited protective technologies for high-temperature corrosion of molten salt sulfur, chlorine, sodium, potassium plasma in high-temperature furnaces, chimney flues, high-temperature desulfurization equipment, exhaust pipes and other parts. Alloy coatings such as 45CT, coated with a layer of nickel-chromium-titanium alloy on the surface of the substrate by thermal spraying, has excellent adhesion, high temperature resistance and high temperature molten salt corrosion resistance, but 45CT has high cost, long construction period, poor compactness, etc. defect

Method used

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  • Inorganic high-temperature fused salt corrosion resistant graphene paint and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A kind of graphene coating of inorganic high-temperature molten salt corrosion resistance is prepared by the following method:

[0044] (1) 8 parts of aluminum dihydrogen phosphate with a solid content of 50%, 9 parts of magnesium dihydrogen phosphate with a solid content of 50%, 10 parts of aluminum chromium phosphate with a solid content of 50%, and 20 parts of zirconium sol with a solid content of 30% Slowly mix and stir evenly to obtain a high-temperature adhesive;

[0045] (2) Mix 0.1 part of 5 μm graphene powder, 0.2 part of CTAB and 7.7 parts of deionized water, and use ultrasonic emulsification disperser to ultrasonically emulsify for more than 30 minutes to prepare graphene dispersion;

[0046] (3) The high-temperature adhesive obtained in step (1), the graphene dispersion obtained in step (2), 7 parts of 10 μm aluminum tripolyphosphate, 6 parts of 10 μm zinc phosphate, 2 parts of 0.3 mm zirconia fiber, and 1 part of 0.5 mm silicon oxide Fiber and 20 parts of ...

Embodiment 2

[0050] A kind of graphene coating of inorganic high-temperature molten salt corrosion resistance is prepared by the following method:

[0051] (1) 20 parts of aluminum dihydrogen phosphate with a solid content of 50%, 7 parts of magnesium dihydrogen phosphate with a solid content of 50%, 8 parts of zinc dihydrogen phosphate with a solid content of 50%, and 7 parts of phosphoric acid with a solid content of 50% Aluminum chromium and 10 parts of zirconium sol with a solid content of 30% are slowly mixed and stirred evenly to prepare a high-temperature adhesive;

[0052] (2) Mix 0.2 parts of 15 μm graphene powder, 0.5 parts of NMP and 8.3 parts of deionized water, and use ultrasonic emulsification disperser to ultrasonically emulsify for more than 1 min to prepare graphene dispersion;

[0053] (3) The high-temperature adhesive obtained in step (1), the graphene dispersion obtained in step (2), 2 parts of 5 μm aluminum tripolyphosphate, 4 parts of 15 μm dichromium oxide, 3 parts o...

Embodiment 3

[0057] A kind of graphene coating of inorganic high-temperature molten salt corrosion resistance is prepared by the following method:

[0058] (1) 15 parts of magnesium dihydrogen phosphate with a solid content of 50%, 10 parts of zinc dihydrogen phosphate with a solid content of 50%, 10 parts of aluminum chromium phosphate with a solid content of 50%, and 15 parts of zirconium sol with a solid content of 30% Slowly mix and stir evenly to obtain a high-temperature adhesive;

[0059] (2) Mix 0.28 parts of 5 μm graphene powder, 0.56 parts of CTAB and 3.16 parts of deionized water, and use a ultrasonic emulsification disperser to ultrasonically emulsify for more than 1 min to prepare a graphene dispersion;

[0060] (3) The high-temperature adhesive obtained in step (1), the graphene dispersion obtained in step (2), 5 parts of 15 μm aluminum tripolyphosphate, 3 parts of 5 μm dichromium oxide, 4 parts of 5 μm zinc phosphate, and 4 parts of 0.1 mm zirconium oxide Fiber, 3 parts of ...

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Abstract

The invention relates to the field of paint, and discloses inorganic high-temperature fused salt corrosion resistant graphene paint. The inorganic high-temperature fused salt corrosion resistant graphene paint comprises the following raw materials in parts by weight: 45-55 parts of a high temperature adhesive, 3-10 parts of a graphene dispersing liquid, 5-15 parts of corrosion-proof filling, 8-18parts of a lamellar material, 2-8 parts of a flexibilizer and 10-20 parts of deionized water, wherein the high temperature adhesive comprises one or a combination of aluminum dihydrogen phosphate, magnesium biphosphate, zinc dihydrogen phosphate, chromium aluminum phosphate and zircon collosol; the graphene dispersing liquid comprises the following ingredients: graphene powder, a dispersing agentand deionized water; the corrosion-proof filling comprises one or a combination of aluminum triphosphate, chromium oxide and zinc phosphate; the lamellar material comprises one or a combination of hexagonal boron nitride, flake aluminum and sericite; and the flexibilizer comprises at least one of a zirconia fiber and a silicon oxide fiber.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an inorganic high-temperature molten salt corrosion-resistant graphene coating and a preparation method thereof. Background technique [0002] Inorganic high-temperature resistant anti-corrosion coating is a special anti-corrosion material that can protect the substrate from corrosion, oxidation resistance, sealing, and wear resistance in high-temperature environments. It is suitable for anti-corrosion of high-temperature furnaces, chimney flues, high-temperature desulfurization equipment, and exhaust pipes. . At the same time, the application environment of high-temperature resistant anti-corrosion coatings is mostly a highly corrosive environment, such as a coal-fired power plant. During the combustion process, the metal ions sodium and potassium in the minerals are volatilized and sublimated, and react with SO3 in the flue gas to form sulfate or coke. Sulfate will cause serious corros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34
CPCC04B28/344C04B2111/00482C04B2111/00577C04B2111/20C04B2111/763C04B22/06C04B14/024C04B14/4637C04B22/16C04B14/4631C04B14/327C04B14/20C04B22/04C04B24/12C04B14/307C04B24/008
Inventor 袁想平丁显波王东卫刘克
Owner SHENZHEN GUOCHUANG JIAWEI GRAPHENE TECH CO LTD
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