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High-temperature far infrared paint and preparing method thereof

A far-infrared, high-temperature technology, applied in the direction of cellulose derivative coatings, coatings, etc., can solve the problems of poor adhesion between coatings and substrates, poor adhesion, falling off, etc., to achieve enhanced adhesion strength, enhanced thermal shock resistance, The effect of reducing usage

Active Publication Date: 2004-12-08
山东慧敏科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these coatings of the prior art have certain energy-saving effects, they all have the following problems to varying degrees: one, the emissivity of the coating is unstable, and as the temperature increases, the emission wavelength moves to the short-wave band, such as the ET-4 coating in the UK The emissivity is greater than 0.9 at 400°C, 0.85 at 800°C, and 0.84 at 1000°C; 2. The adhesion between the coating and the substrate is poor, and it is easy to fall off, especially the adhesion between the coating and the metal substrate. Poor, such as the ET-4 coating in the UK, when the application temperature of the metal surface cannot be higher than 1100 ° C, otherwise it will fall off, which seriously restricts the application of the coating on industrial boilers; 3. The suspension of the coating is poor, the storage time is short, and the storage time is long. Serious agglomeration will occur if left for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: The high-temperature far-infrared coating component is as follows, is weight part:

[0029] Zirconia 100 parts

[0030] Cr 2 o 3 110 copies

[0031] 120 parts of refractory clay

[0032] Bentonite 90 parts

[0033] Brown fused alumina (Al 2 o 3 ) 200 copies

[0034] Silicon carbide 270 parts

[0035] PA80 glue 200 parts

[0036] Carboxymethylcellulose 10 parts

[0037] The particle size of the above solid components is 320 mesh.

[0038] The preparation method is as follows:

[0039] The above-mentioned components are weighed and mixed according to the proportion to make a viscous suspension fluid, and then the high-temperature far-infrared coating product can be obtained.

Embodiment 2

[0040] Embodiment 2: the high-temperature far-infrared coating component is as follows, is weight part:

[0041] Zirconia 200 parts

[0042] Cr 2 o 3 150 copies

[0043] 200 parts of refractory clay

[0044] Titanium dioxide 200 parts

[0045] Brown fused alumina (Al 2 o 3 ) 500 copies

[0046] Silicon carbide 500 parts

[0047] Water glass 450 parts

[0048] Carboxymethylcellulose 50 parts

[0049] The particle size of the above solid components is 320 mesh.

[0050] The preparation method is as follows:

[0051] The above-mentioned components are weighed and mixed according to the proportion to make a viscous suspension fluid, and the nano-ultrafine treatment is used to make the particle size reach 25-780nm, and the nano-scale high-temperature far-infrared coating product is obtained.

Embodiment 3

[0052] Embodiment 3: as described in embodiment 2, the difference is that the high-temperature far-infrared coating components are as follows, all in parts by weight:

[0053] Zirconia 50 parts

[0054] Cr 2 o 3 20 copies

[0055] 40 parts of refractory clay

[0056] Bentonite 10 parts

[0057] Titanium dioxide 20 parts

[0058] Brown fused alumina (Al 2 o 3 ) 100 copies

[0059] Silicon carbide 160 parts

[0060] 150 parts of water glass.

[0061]During construction, spray the aqueous pretreatment solution containing PA80 glue after cleaning the surface, and then spray the far-infrared paint.

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Abstract

A refractory far infrared paint is prepared from zirconium oxide, Cr2O3, refractory clay, bentonite, TiO2 powder, brown corundum, iron oxide, silicon carbide, adhesive PA80 or water glass and carboxymethyl cellulose through proportional mixing, and nano-class superfine processing. Its advantage is high emissivity (0.93) at high temp.

Description

(1) Technical field [0001] The invention relates to a high-temperature far-infrared coating with micronano superfine powder, belonging to the technical field of high-temperature-resistant far-infrared coatings. (2) Background technology [0002] In the process of utilizing energy, people have taken various effective measures, and energy-saving coatings are one of them. Energy-saving coatings are based on the theory of heat transfer, combined with electromagnetic theory, and according to the different electromagnetic emission laws of different substances, several materials with high emissivity are screened out. Infrared coating is used for coating the inner wall of high-temperature furnaces, so that the energy of fuel can be further activated, so as to achieve the purpose of energy saving. Foreign infrared coatings mainly include ET-4 from the British CRC Company, CRC-10A, G-125 and SBE coatings from the United States, and CRC1100 and 1500 coatings from Japan. They are all ...

Claims

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Application Information

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IPC IPC(8): C09D5/00C09D101/08
Inventor 周惠敏
Owner 山东慧敏科技开发有限公司
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