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A high temperature resistant spectrally selective infrared stealth coating and its preparation method

A selective, high-temperature-resistant technology, applied in optics, optical filters, optical components, etc., can solve the problems of difficult stealth coatings, etc., to facilitate large-area preparation and application, simple and feasible preparation process, and good repeatability Effect

Active Publication Date: 2022-05-20
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the contradiction between the low absorption in the window band required for infrared stealth and the high microwave absorption required for radar stealth, it is very difficult to develop stealth coatings compatible with infrared and radar

Method used

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  • A high temperature resistant spectrally selective infrared stealth coating and its preparation method
  • A high temperature resistant spectrally selective infrared stealth coating and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0034] A preparation method of a high temperature resistant spectrally selective infrared stealth coating, comprising the following steps:

[0035] 1) Raw material preparation:

[0036] Inorganic phase preparation: 90g of zirconia, 5g of cerium oxide, 5g of calcium oxide; the purity of the oxides is ≥99%, and the average particle size is 1.0-3.0μm;

[0037] Preparation of organic phase: Dissolve ethyl cellulose in terpineol at 90°C, and obtain a yellow transparent liquid in a mass ratio of 4:96 between ethyl cellulose and terpineol;

[0038] Preparation of functional aids: dispersant is selected from stearic acid with functional amine; sintering aid is selected from lithium chloride; dispersant and sintering aid are in a mass ratio of 1:1;

[0039] Inorganic phase, organic phase, functional additives, according to the mass ratio of 61:38:1;

[0040] 2) Mix the organic phase obtained in the previous step with the disperser uniformly, then mix it with the inorganic phase, and ...

Embodiment 2

[0044] A preparation method of a high temperature resistant spectrally selective infrared stealth coating, comprising the following steps:

[0045] 1) Raw material preparation:

[0046] Inorganic phase preparation: 70g of cerium oxide, 5g of calcium oxide, 20g of magnesium oxide; the purity of the oxides is ≥99%, and the average particle size is 1.0-3.0μm;

[0047] Organic phase preparation: Dissolve ethyl cellulose in terpineol at 90°C, and obtain a yellow transparent liquid in a mass ratio of 6:94 between ethyl cellulose and terpineol;

[0048] Preparation of functional additives: dispersant is selected from stearic acid with acid ester; sintering aid is selected from lithium oxide; dispersant and sintering aid are in a mass ratio of 1:1;

[0049] Inorganic phase, organic phase, functional additives, according to the mass ratio of 63:36:1;

[0050] 2) Mix the organic phase obtained in the previous step with the disperser uniformly, then mix with the inorganic phase, and un...

Embodiment 3

[0054] A preparation method of a high temperature resistant spectrally selective infrared stealth coating, comprising the following steps:

[0055] 1) Raw material preparation:

[0056] Inorganic phase preparation: 10g calcium oxide, 40g cerium oxide, 30g zirconium oxide, 20g aluminum oxide; the purity of the oxide is ≥99%, and the average particle size is 1.0-3.0μm;

[0057] Preparation of organic phase: Dissolve ethyl cellulose in terpineol at 90°C, and obtain a yellow transparent liquid in a mass ratio of 5:95 between ethyl cellulose and terpineol;

[0058] Preparation of functional aids: dispersant is selected from stearic acid with alcohol group; sintering aid is selected from yttrium oxide; dispersant and sintering aid are in a mass ratio of 1:1;

[0059] Inorganic phase, organic phase, functional additives, according to the mass ratio of 62:37:1;

[0060] 2) Mix the organic phase obtained in the previous step with the disperser uniformly, then mix with the inorganic p...

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PUM

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Abstract

The invention discloses a high-temperature-resistant spectrally selective infrared stealth coating, which is an oxide coating made of cerium oxide, aluminum oxide, zirconium oxide, yttrium oxide, magnesium oxide, barium oxide, strontium oxide, silicon carbide, nitrogen The selective radiation infrared stealth coating can be prepared by combining two or more kinds of silicon oxides. The present invention also provides a method for preparing a high-temperature-resistant spectrally selective infrared stealth coating. The coating is prepared by plasma spraying or screen printing, and the emission of infrared spectrum is regulated by compounding different oxide materials and treating at different temperatures. Features, achieve low emissivity in the 3.0μm-5.0μm band and high emissivity in the 5.0μm-25.0μm band.

Description

technical field [0001] The invention belongs to the technical field of functional materials, in particular to a high temperature resistant spectrally selective infrared stealth coating and a preparation method thereof, and relates to a coating preparation method which can be used in the fields of radar wave absorption and infrared stealth compatibility. Background technique [0002] Infrared stealth technology is to reduce or change the infrared radiation characteristics of the target, so that the enemy infrared detection equipment is difficult to find or its detection ability is reduced. At present, the use of low-emissivity infrared stealth coatings is still the most important way of infrared stealth. Traditional infrared low-emissivity coatings have low emissivity in the entire infrared band, covering the infrared detection band. According to the Stefan-Boltzmann law: M=εσT 4 , the infrared radiation intensity is related to temperature T and emissivity ε. Adjust the su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/22G02B5/20
CPCG02B5/223G02B5/208Y02E10/40
Inventor 刘东青程海峰
Owner NAT UNIV OF DEFENSE TECH
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