An infrared-radar compatible stealth material and its preparation method

A stealth material and compatible technology, applied in chemical instruments and methods, layered products, glass/slag layered products, etc., can solve problems such as narrow radar absorption frequency band, high infrared emission rate, and weak interlayer bonding force. Achieve the effects of low maintenance and maintenance costs, excellent infrared stealth performance, and good radar stealth performance

Active Publication Date: 2018-03-23
SICHUAN AEROSPACE TUOXIN BASALT IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the single infrared / radar compatible stealth material is still in the theoretical research stage, and the actual preparation has the following problems: 1) The infrared emissivity of the atmospheric window band (3-5 μm, 8-15 μm) is too high, which is difficult to meet the needs of infrared stealth; 2 ) The radar absorption frequency band is too narrow, and it is difficult to be invisible under the scanning of different band radars; 3) The cost is high and the life is short
At present, composite infrared / radar compatible stealth materials are the mainstream of development. The main problems of existing equipment are as follows: 1) The process is complicated, and the maintenance and maintenance in the later period are time-consuming and costly; 3) The properties of materials used in each layer are quite different, and the bonding force between layers is weak

Method used

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  • An infrared-radar compatible stealth material and its preparation method
  • An infrared-radar compatible stealth material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Low infrared emissivity layer: take inorganic phosphate binder, add 10% aluminum powder and mix well, prepare low infrared emissivity layer with 2 layers of basalt fiber checkered cloth as reinforcing material; control the low infrared emissivity layer The mass percentage of the reinforcing material is 45%~60%;

[0030] Radar wave-transmitting layer: use epoxy resin as the matrix material and two-layer basalt fiber checkered cloth as the reinforcing material to prepare the radar wave-transmitting layer prepreg; control the mass percentage of the reinforcing material of this layer to 50%~70%;

[0031] Radar absorbing layer: The basalt fiber roving is washed with acetone to remove the sizing agent on the surface, dried and activated by reaction with nitrile-based resin, and then magnetic nano Fe is added 3 O 4 The powder reaction makes the surface of the basalt fiber graft a large amount of absorbing functional materials to obtain a radar absorbing layer; control the mass perce...

Embodiment 2

[0038] Low infrared emissivity layer: take inorganic phosphate binder, add 15% silver powder and mix well, prepare low infrared emissivity layer with 2 layers of S-glass fiber cloth as reinforcing material; control the low infrared emissivity layer The mass percentage of reinforcing material is 45%~60%;

[0039] Radar wave-transmitting layer: take epoxy resin as the matrix material and use 3 layers of S-glass fiber cloth as the reinforcement material to prepare the radar wave-transmitting layer prepreg; control the mass percentage of the reinforcement material of this layer to 50%~70%;

[0040] Radar absorbing layer: the basalt fiber roving is washed with ethanol to remove the sizing agent on the surface, dried and activated by reaction with nitrile-based resin, and then magnetic nano Fe is added 3 O 4 The powder reaction makes the surface of the basalt fiber graft a large amount of absorbing functional materials to obtain a radar absorbing layer; control the mass percentage of the ...

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Abstract

The invention discloses an infrared-radar compatible stealthy material and a preparation method thereof. The material sequentially comprises a low infrared emissivity layer, a radar wave transmission layer, a radar wave absorbing layer and a radar reflecting layer from top to bottom, wherein the low infrared emissivity layer takes an inorganic adhesive capable of bearing high temperature of 1000K or above as a matrix material, takes fibers with infrared emissivity not higher than 0.8 at a wave band of 8 to 15mu m as a reinforcing material, and takes metal or a semiconductor as an auxiliary material; the radar wave transmission layer takes resin as a matrix material and takes continuous fibers with high transmissivity to radar wave of 2 to 18GHz, and high strength as a reinforcing material; the radar wave absorbing layer takes resin containing a nitrile functional group as a matrix material, takes basalt fibers as a reinforcing material and takes a ferrite radar wave absorber as an auxiliary material; the radar reflecting layer takes resin as a matrix material and takes carbon fibers as a reinforcing material. The stealthy material disclosed by the invention is excellent in infrared and radar stealthy performance and is simple in preparation process.

Description

technical field [0001] The invention relates to the field of new materials, in particular to an infrared-radar compatible stealth material and a preparation method thereof. Background technique [0002] With the rapid development of multi-band detection technology, military equipment may face the threat of multi-band reconnaissance equipment such as visible light, infrared light, laser and radar at the same time on the battlefield. Against this background, the military is more willing to use stealth materials that are not outstanding in single-band stealth performance but compatible with multiple bands, rather than products that have excellent single-band stealth performance but damage the stealth performance of other frequency bands. However, infrared stealth requires materials with low absorption and high reflection, while radar stealth requires materials with high absorption and low reflection. This pair of contradictions brings great difficulties to the preparation of co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/38B32B27/12B32B17/02B32B9/00B32B9/04B32B33/00
CPCB32B27/12B32B27/38B32B33/00B32B2262/10B32B2262/101B32B2307/20
Inventor 姚勇陈中武鲜平曹柏青
Owner SICHUAN AEROSPACE TUOXIN BASALT IND
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