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Temperature-resistant environment-friendly infrared stealth material with waveband selection and low emissivity and preparation method thereof

A technology of band selection and stealth materials, applied in metal material coating technology, camouflage paint, vacuum evaporation coating, etc., can solve the problems of high temperature infrared emissivity, infrared stealth materials cannot be used for a long time, and difficult visible light stealth compatibility

Active Publication Date: 2022-07-29
AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a temperature-resistant and environment-friendly infrared stealth material with band selection, low emission, and a preparation method, which is used to solve the problem that the existing infrared stealth materials cannot be used at high temperatures for a long time, the high-temperature infrared emissivity is too high, and it is difficult to be compatible with visible light stealth The problem

Method used

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  • Temperature-resistant environment-friendly infrared stealth material with waveband selection and low emissivity and preparation method thereof
  • Temperature-resistant environment-friendly infrared stealth material with waveband selection and low emissivity and preparation method thereof
  • Temperature-resistant environment-friendly infrared stealth material with waveband selection and low emissivity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of infrared stealth material with band selection, low emission, temperature resistance and environmental protection, including a relatively high refractive index (n 涂 =3.55~3.74) and infrared stealth coatings with relatively low refractive index (n 膜 = 1.12~1.25) of the infrared stealth film alternately plated to form the periodic infrared stealth material, in this embodiment, the number of cycles is six, and the first layer of material close to the metal substrate is the infrared stealth coating material. The thicknesses of the materials are all close to λ / 4, respectively.

[0031] The infrared stealth coating in this embodiment includes the following raw materials by weight:

[0032] Metal filler: 35%, binder: 58%, pigment: 1.5%, auxiliary agent: 5.5%.

[0033] It should be noted that, in this embodiment, the metal filler is Al / Cr obtained by flaky aluminum powder after being treated by liquid deposition surface coating technology 2 O 3 . The binder is an ...

Embodiment 2

[0046] A kind of infrared stealth material with band selection, low emission, temperature resistance and environmental protection, including a relatively high refractive index (n 涂 =3.55~3.74) and infrared stealth coatings with relatively low refractive index (n 膜 = 1.12~1.25) of the infrared stealth film alternately plated to form the periodic infrared stealth material, in this embodiment, the number of cycles is six, and the first layer of material close to the metal substrate is the infrared stealth coating material. The thicknesses of the materials are all close to λ / 4, respectively.

[0047] The infrared stealth coating in this embodiment includes the following raw materials by weight:

[0048] Metal filler: 40%, binder: 55%, pigment: 2.5%, auxiliary agent: 2.5%.

[0049] In the examples of the present application, the metal filler is Al / Cr obtained by the treatment of flake aluminum powder by liquid deposition surface coating technology 2 O 3 . The binder is an aque...

Embodiment 3

[0062] A kind of infrared stealth material with band selection, low emission, temperature resistance and environmental protection, including a relatively high refractive index (n 涂 =3.55~3.74) and infrared stealth coatings with relatively low refractive index (n 膜 = 1.12-1.25) of the periodic infrared stealth film alternately plated with infrared stealth film, in this embodiment, the number of cycles is four, and the first layer of material close to the metal substrate is the infrared stealth coating material. The thicknesses of the materials are all close to λ / 4, respectively.

[0063] The infrared stealth coating in this embodiment includes the following raw materials by weight:

[0064] Metal filler: 35%, binder: 58%, pigment: 1.5%, auxiliary agent: 5.5%.

[0065] In this embodiment, the metal filler is Al / Cr obtained by flaky aluminum powder after being treated by liquid deposition surface coating technology 2 O 3 . The binder is an aqueous silicate binder. The pigme...

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Abstract

The invention provides a waveband-selective low-emissivity temperature-resistant environment-friendly infrared stealth material and a preparation method thereof.The material comprises an infrared stealth coating and an infrared stealth film which are alternately arranged on a base material, the refractive index of the infrared stealth coating ranges from 3.55 to 3.74, sheet-shaped aluminum powder is modified through a liquid phase deposition surface coating technology, and the infrared stealth film is prepared. The prepared Al / Cr2O3 composite filler effectively improves the temperature resistance of the infrared coating. The refractive index of the infrared stealth film ranges from 1.12 to 1.25. The material has low infrared emissivity in infrared detection windows (3-5 microns and 8-14 microns) and has high infrared emissivity in a non-infrared detection window. The infrared stealth material disclosed by the invention can resist high temperature of 600 DEG C or above.

Description

technical field [0001] The invention belongs to the field of new functional materials, and in particular relates to an environment-friendly infrared stealth material with wavelength selection, low emission, temperature resistance, and a preparation method. Background technique [0002] With the development of science and technology, the flight speed of aircraft has been continuously improved, and the flight speed of hypersonic aircraft has reached Mach 6 or more. Under supersonic flight conditions, the intense friction between the airflow and the airframe makes the temperature of the airframe rise rapidly. The heating effect of the radome of the aircraft head and the air inlet of the aircraft is the most significant, and the infrared radiation is abnormally prominent. The all-weather, high-precision, long-range and strong anti-electromagnetic interference capabilities of infrared detectors enable them to easily find these weapons and equipment with prominent infrared radiati...

Claims

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Application Information

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IPC IPC(8): C09D5/30C09D1/00C09D7/62C09D7/65C23C14/16C23C14/35
CPCC09D5/30C09D1/00C09D7/62C09D7/65C23C14/165C23C14/35
Inventor 罗振涛王才良龙昌王浩继王彦淇贾冬梅刘柳韦芳韩冰
Owner AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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