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High-temperature-resisting infrared heat energy-saving coating and preparation method thereof

An energy-saving coating and infrared heat technology, which is applied in the direction of fireproof coatings, radiation-absorbing coatings, alkali metal silicate coatings, etc., can solve the problems of poor substrate adhesion, low density, poor thermal shock resistance, etc., to achieve Improve the bonding force, improve the density, improve the effect of infrared radiation rate and stability

Inactive Publication Date: 2018-07-06
北京志盛威华化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing infrared radiation coatings have poor adhesion to the substrate, poor thermal shock resistance, and low density and other performance defects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A high-temperature resistant infrared heat energy-saving coating, its components and parts by weight are as follows:

[0045] 50 parts of adhesive;

[0046] 4 parts silicon carbide;

[0047] 2 parts of titanium dioxide;

[0048] 1 part of manganese dioxide;

[0049] 3 parts copper oxide;

[0050] 5 parts of graphite;

[0051] 3 parts of zirconia;

[0052] 4 parts of aluminum oxide;

[0053] 7 parts of kaolin;

[0054] High emission mullite 20 parts;

[0055] 1 part of densifying agent.

[0056] A kind of adhesive as described above is highly stable, high modulus potassium silicate solution, and the preparation method is as follows:

[0057] Put 50kg of low-modulus potassium silicate solution (with a modulus of 3.5-3.7) into the reactor, and slowly add 10kg of For alkaline silica sol with 20% solid content (PH 9-10), the dropping rate is kept at 30-60 drops / min. After adding the silica sol dropwise, add 1.5kg of silane coupling agent γ―( 2,3-Glycidyloxy) Propylt...

Embodiment 2

[0062] A high-temperature resistant infrared heat energy-saving coating, its components and parts by weight are as follows:

[0063] 60 parts of adhesive;

[0064] 4 parts silicon carbide;

[0065] 2 parts of titanium dioxide;

[0066] 1 part of manganese dioxide;

[0067] 3 parts copper oxide;

[0068] 5 parts of graphite;

[0069] 3 parts of zirconia;

[0070] 4 parts of aluminum oxide;

[0071] 7 parts of kaolin;

[0072] High emission mullite 10 parts;

[0073] 1 part of densifying agent.

[0074] One of the above-mentioned adhesives is a highly stable and high modulus potassium silicate solution, the preparation method of which is the same as in Example 1.

[0075] A kind of high emission mullite as mentioned above is the mullite obtained after calcining and pretreatment of andalusite, kyanite, and alumina at 1450° C., and the steps are the same as in the first embodiment.

[0076] A preparation method of the above-mentioned high-temperature infrared heat-resist...

Embodiment 3

[0078] A high-temperature resistant infrared heat energy-saving coating, its components and parts by weight are as follows:

[0079] 50 parts of adhesive;

[0080] 4 parts silicon carbide;

[0081] 2 parts of titanium dioxide;

[0082] 1 part of manganese dioxide;

[0083] 3 parts copper oxide;

[0084] 5 parts of graphite;

[0085] 3 parts of zirconia;

[0086] 4 parts of aluminum oxide;

[0087] 7 parts of kaolin;

[0088] High emission mullite 20 parts

[0089] 1 part of densifying agent.

[0090] A kind of adhesive as described above is highly stable, high modulus potassium silicate solution, and the preparation method is as follows:

[0091] Put 50kg of low-modulus potassium silicate solution (modulus 3.5-3.7) into the reactor, slowly add 15kg of For alkaline silica sol with 20% solid content (PH 9-10), the dropping rate is kept at 30-60 drops / min. After adding the silica sol dropwise, add 1.5kg of silane coupling agent γ―( 2,3-Glycidyloxy) Propyltrimethoxysila...

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Abstract

The invention relates to high-temperature-resisting infrared heat energy-saving coating. The high-temperature-resisting infrared heat energy-saving coating is prepared from the following components inparts by weight: 50 to 60 parts of an adhesive, 3 to 5 parts of silicon carbide, 1 to 5 parts of titanium dioxide, 1 to 2 parts of manganese dioxide, 1 to 5 parts of copper oxide, 3 to 7 parts of graphite, 2 to 10 parts of zirconium oxide, 2 to 8 parts of aluminum oxide, 3 to 10 parts of kaolin, 10 to 20 parts of high-emissivity mullite, 0.5 to 1 part of a dense agent and 0.1 to 3 parts of a pH (Potential of Hydrogen) regulator. The coating provided by the invention can bear the temperature of 600 to 1500 DEG C and the whole infrared radiation coefficient in a wavelength range of 1 to 20mu mreaches 0.92 to 0.95; the high-temperature-resisting infrared heat energy-saving coating has excellent corrosion resistance, wearing resistance and thermal shock resistance. The binding force betweena coating layer and a matrix is strong; the coating layer can permeate the matrix to form a transition layer and the transition layer is denser. The high-temperature-resisting infrared heat energy-saving coating has strong infrared radiation, so that the temperature field intensity and uniformity in a hearth are improved and the combustion is more sufficient; the heat efficiency in the hearth is improved and the energy consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a high-temperature resistant infrared heat energy-saving coating and a preparation method thereof. Background technique [0002] With the gradual strengthening of domestic environmental protection awareness and energy shortage, energy conservation and emission reduction are imperative. Therefore, effective energy-saving measures must be taken on the surface of high-temperature equipment such as industrial transportation heat pipes, kilns, and high-temperature valves to reduce heat loss. As a new type of energy-saving coating, infrared coating has a good energy-saving effect on industrial furnaces and civil furnaces. From the perspective of radiation heat transfer, due to the high surface emissivity of infrared coatings (generally above 0.8), infrared coatings will Most of the absorbed heat is radiated to the heated body in the form of infrared rays, which greatly imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/02C09D5/18C09D5/32C09D7/61
Inventor 赵志海陈超
Owner 北京志盛威华化工有限公司
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