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Composite infrared radiation paint and preparation method thereof and infrared radiating coating

An infrared radiation coating, infrared radiation coating technology, applied in coatings, alkali metal silicate coatings, sustainable manufacturing/processing and other directions, can solve the problems of poor infrared radiation performance and energy saving effect, low boiler thermal efficiency, etc. The effect of high emissivity and absorption rate, improved thermal efficiency, and extended service life

Inactive Publication Date: 2015-07-22
KING STRONG MATERIAL ENG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the technical problem that the infrared radiation performance and energy-saving effect of the infrared radiation coating in the prior art are poor, resulting in low boiler thermal efficiency

Method used

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  • Composite infrared radiation paint and preparation method thereof and infrared radiating coating
  • Composite infrared radiation paint and preparation method thereof and infrared radiating coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh each raw material in the following parts by weight, wherein the particle size of all the powders in component A is ≥320 mesh, and after mixing, the composite infrared radiation coating S1 of this embodiment is obtained:

[0031] Component A: 40 parts by weight of composite infrared powder with spinel structure;

[0032] 5 parts by weight of white corundum,

[0033] Brown corundum 5 parts by weight,

[0034] 10 parts by weight of black corundum,

[0035] Fumed silica 1 part by weight,

[0036] 39 parts by weight of sodium silicate water glass,

[0037] Among them, the composite infrared powder with spinel structure is made of 50%MnO 2 , 30% Fe 2 o 3 , 10%CuO, 5%Co 2 o 3 , 5%Cr 2 o 3 After mixing evenly, press into agglomerates, sinter at 1300°C for 2 hours, cool to room temperature, and pulverize to make a powder with a particle size of D90 ≥ 325 mesh.

[0038] Component B: sodium fluorosilicate coagulant;

[0039] The weight ratio of component A to compo...

Embodiment 2

[0042] Weigh each raw material in the following parts by weight, wherein the particle size of all powders in component A is ≥320 mesh, and after mixing, the composite infrared radiation coating S2 of this embodiment is obtained:

[0043] Component A: 60 parts by weight of composite infrared powder with spinel structure;

[0044] 12 parts by weight of brown corundum;

[0045] Fumed white carbon black 3 parts by weight;

[0046] 25 parts by weight of sodium silicate water glass;

[0047] Among them, the composite infrared powder with spinel structure is made of 60%MnO 2 , 20% Fe 2 o 3 , 10%CuO, 5%Co 2 o 3 , 5% NiO mixed evenly and pressed into blocks, sintered at 1250 ° C for 2 hours, cooled to room temperature and pulverized to make powder with particle size D90 ≥ 400 mesh.

[0048] Component B: potassium fluorosilicate coagulant;

[0049] The weight ratio of component A to component B is 100:6.

[0050] Coating the above-mentioned composite infrared radiation coating ...

Embodiment 3

[0052] Weigh each raw material in the following parts by weight, wherein the particle size of all powders in component A is ≥320 mesh, and after mixing, the composite infrared radiation coating S3 of this embodiment is obtained:

[0053] Component A: 50 parts by weight of composite infrared powder with spinel structure;

[0054] 10 parts by weight of white corundum;

[0055] Fumed white carbon black 2 parts by weight;

[0056] 38 parts by weight of potassium silicate water glass;

[0057] Among them, the composite infrared powder with spinel structure is made of 70%MnO 2 , 20%Fe 2 o 3 , 5%CuO, 5%Co 2 o 3 After mixing evenly, press into agglomerates, sinter at 1280°C for 2 hours, cool to room temperature and pulverize to make powder with particle size D90 ≥ 500 mesh.

[0058] Component B: lithium fluorosilicate coagulant;

[0059] The weight ratio of component A to component B is 100:11.

[0060] The above-mentioned composite infrared radiation coating S3 is coated on ...

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Abstract

The invention provides a composite infrared radiation paint which is prepared by mixing components A and B according to the weight ratio of 100:(6-15), wherein the component A contains composite infrared powder with a stable spinel structure, emery powder, gas-phase-method white carbon black and sodium silicate; and the component B is a fluosilicate coagulant. The invention further provides a preparation method of the composite infrared radiation paint and an infrared radiating coating formed by the composite infrared radiation paint. The composite infrared radiation paint provided by the invention has good high-temperature stability and infrared radiation property, and the full-wave-band radiance is stabilized at 0.9 above for a long time. The thermal efficiency of a boiler can be effectively improved by adopting the composite infrared radiation paint to coat the surfaces of the refractory material of a boiler lining and a water-cooled wall tube heat exchanger.

Description

technical field [0001] The invention relates to the technical field of new materials and energy saving, in particular to a composite infrared radiation coating, a preparation method thereof and an infrared radiation coating. Background technique [0002] As we all know, heat transfer takes place in three ways: conduction, convection and radiation. In the low temperature stage, the heat transfer is dominated by convection, while in the high temperature stage (above 800°C), it is dominated by radiation heat transfer. For boilers in industrial furnaces, the heat absorbed by the water-cooled wall tubes to the fire surface mainly comes from the heat transferred by the furnace wall radiation, and then mainly exchanges heat with the water flowing inside the water-cooled wall tubes in the way of radiation and heat conduction. In the past, the energy-saving transformation of boilers was mainly to improve the heat insulation performance of the furnace wall refractory materials to red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/02C09D7/12C09D5/00
CPCY02P20/10
Inventor 赵立英廖应峰王刚李正曦陈进
Owner KING STRONG MATERIAL ENG LTD