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Infrared energy-saving coating with anti-corrosion and anti-coking functions and preparation method thereof

An energy-saving coating and anti-coking technology, applied in anti-corrosion coatings, reflective/signal coatings, coatings, etc., can solve problems such as poor adhesion and temperature shock resistance, unstable emissivity of coatings, and corrosion of metal substrates. Achieve the effects of improving adhesion, good protection, and stress relief

Inactive Publication Date: 2012-07-18
KING STRONG MATERIAL ENG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the infrared coatings currently used have poor adhesion and temperature shock resistance to metal substrates, and the use of fuels with high sulfur content such as coal powder is easy to corrode the metal substrate and form a large amount of coke on the coating surface; use Coatings made of radiation powder such as silicon carbide are easily oxidized at high temperatures, and the emissivity of the coating is unstable and the service life is significantly reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Component A is prepared from powders in the following weight ratios:

[0040] Spinel structure infrared composite blackening agent 50 parts,

[0041] Corundum powder 20 parts,

[0042] High temperature adhesive 10 parts,

[0043] Graphite 10 parts,

[0044] 5 parts of boron nitride,

[0045] Manganese trioxide 5 parts.

[0046] Among them: the infrared composite blackening agent with spinel structure is prepared from the following raw materials in weight percentage:

[0047] MnO 2 : 40%, Fe 2 o 3 : 30%, CuO: 10%, Co 2 o 3 : 10%, Cr 2 o 3 : 10%.

[0048] High temperature binder made of SiO 2 , MgO, Al 2 o 3 、TiO 2 Raw materials are prepared by equal weight.

[0049] According to needs, the raw material SiO 2 , MgO, Al 2 o 3 、TiO 2 Prepare according to the following weight ratio and mix evenly to obtain a high-temperature adhesive: SiO 2 : 60-100 parts, MgO: 0-40 parts, Al 2 o 3 : 0 to 40 parts, TiO 2 : 0 to 40 parts.

[0050] The particle ...

Embodiment 2

[0066] Component A is prepared from powders in the following weight ratios:

[0067] Spinel structure infrared composite blackening agent 60 parts,

[0068] Corundum powder 25 parts,

[0069] High temperature adhesive 5 parts,

[0070] graphite 5 parts,

[0071] Manganese trioxide 5 parts.

[0072] Among them: the infrared composite blackening agent with spinel structure is prepared from the following raw materials in weight percentage:

[0073] MnO 2 : 60%, Fe 2 o 3 : 25%, CuO: 15%.

[0074] High temperature binder chooses SiO 2 .

[0075] The particle size of the powder in the above component A is ≥280 mesh

[0076] Component B, prepared from powders in the following weight ratios:

[0077] 80 parts of water glass,

[0078] 20 parts of silica sol.

[0079] From the above ingredients, using the same production process as in Example 1, an infrared energy-saving coating with anti-corrosion and anti-coking functions can be prepared, and details will not be repea...

Embodiment 3

[0081] Component A is prepared from powders in the following weight ratios:

[0082] Spinel structure infrared composite blackening agent 40 parts,

[0083] Corundum powder 30 parts,

[0084] High temperature adhesive 7 parts,

[0085] graphite 7 parts,

[0086] 10 parts of boron nitride,

[0087] 3 parts of manganese trioxide.

[0088] Among them: the infrared composite blackening agent with spinel structure is prepared from the following raw materials in weight percentage:

[0089] MnO 2 : 50%, Fe 2 o 3 : 20%, CuO: 20%, Co 2 o 3 : 5%, Cr 2 o 3 : 5%.

[0090] High temperature binder made of SiO 2 、Al 2 o 3 Raw materials are prepared by equal weight.

[0091] The particle size of the powder in the above component A is ≥280 mesh

[0092] Component B, prepared from powders in the following weight ratios:

[0093] 70 parts of water glass,

[0094] 10 parts of silica sol,

[0095] 20 parts of aqueous resin solution.

[0096] Wherein, the water-based resin solu...

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Abstract

The invention relates to an infrared energy-saving coating with anti-corrosion and anti-coking functions, which is prepared from a component A and a component B according to the weight ratio of 1: 1-2. The particle size of powder materials in the component A is not less than 280 meshes and the component A is prepared from the following powder materials according to the weight ratio: 40-60 parts of spinel structure infrared composite darkening agent, 10-30 parts of corundum powder and 3-10 parts of high-temperature binding agent. The component A further comprises an anti-coking agent, and the anti-coking agent is prepared from the following powder materials according to the weight ratio: 3-10 parts of graphite, 0-10 parts of boron nitride and 1-5 parts of manganese sesquioxide. The component B is of a film-forming substance and prepared from the following raw materials according to the weight ratio: 60-80 parts of water glass, 10-30 parts of silica sol and 0-20 parts of water-borne resin solution. The invention further discloses a preparation method of the coating. The coating provided by the invention has the advantages: corrosion prevention, capability of reducing coking, high temperature resistance and excellent infrared radiation performance.

Description

Technical field [0001] The invention is a chemical and coating technology field, which involves an infrared energy -saving coating method with anti -corrosion and anti -scoring functions. Background technique [0002] As we all know, heat transmission is conducted in three ways: conduction, convection and radiation.At the low temperature stage, the heat transfer is mainly against flow, and at the high temperature stage (above 800 ° C), it is mainly radiating heat transfer.With the rise of temperature, radiation heat transfer increases with geometric levels, and is directly proportional to the four times of temperature.Increasing the emission rate of the radiation body will be beneficial to the strengthening of radiation heat transfer.In recent years, infrared radiation coatings have attracted the attention of many researchers with excellent infrared energy saving characteristics, and have also been widely used in industrial heating furnaces.However, the adhesion and anti -tempera...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D129/04C09D101/26C09D161/06C09D5/08C09D5/33C09D7/12C09J1/00
Inventor 王刚赵立英
Owner KING STRONG MATERIAL ENG LTD
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