Hyperspectral camouflage material and preparation method thereof

Abstract

The invention relates to a hyperspectral camouflage material. The hyperspectral camouflage material comprises a substrate, a hyperspectral material and a packaging film material which are sequentiallystacked from bottom to top. The hyperspectral material is prepared from the following components in parts by weight: 100 to 230 parts of a hyperspectral material matrix and 4 to 21.4 parts of multi-pigment color paste. The hyperspectral material matrix is prepared from 1000 parts of deionized water, 0.5 parts of a silane coupling agent, 2 parts of glycerol, 50 parts of a crystalline hydrate, 5 parts of shell powder, 100 parts of water-based polyhydroxy resin and 25 parts of cellulose. The multi-pigment color paste is prepared from 210 to 260 parts of deionized water, 2 parts of a wetting agent, 3 to 32 parts of a dispersing agent, 0.5 to 1.4 parts of a defoaming agent, 0.15 to 6.5 parts of hydroxyethyl cellulose and 60 to 81 parts of toner. The hyperspectral camouflage material disclosedby the invention has water absorption characteristic peaks (1460nm and 1940nm), can effectively simulate a vegetation spectral reflection curve, meets the related colorimetric data requirements of GJB1082-91 and the green vegetation standard spectrum channel curve requirements of GJB1411A-2015 from visible light to a near-infrared band (400-2500nm), and can effectively reduce the probability thatequipment is found by hyperspectral reconnaissance equipment in a forest background.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a hyperspectral camouflage material and a preparation method thereof. Background technique [0002] In modern high-tech warfare, the discovery of a target means its destruction, especially under all-weather, full-time reconnaissance conditions dominated by satellites, early warning aircraft, unmanned aerial vehicles, and high-altitude and high-speed reconnaissance aircraft. Under various strike methods such as smart bombs, ground military targets are faced with extremely severe battlefield survival conditions. [0003] In recent years, the mature application of new military reconnaissance technologies represented by hyperspectral and hyperspectral imaging detection has seriously threatened the battlefield survivability and penetration capabilities of various ground military targets. This type of detection technology combines the advantages of spectral an...

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Problems solved by technology

[0004] Woodland is a typical combat background, and the green vegetation background occupies most of the background features of woodland. Therefore, the spectral reflection characteristics of simulated vegetation has become the main requirement for combating hyperspectral reconnaissance. The spectral reflection curve of this type of camouflage material must meet the GJB 1411A-2015 green Vegetation reference standard spectral channel requirements, currently existing domestic hyperspectral camouflage coatings can simulate the overall trend of the spectral reflection curve of vegetation leaves, but cannot simulate the characteristic absorption peaks of water in vegetation leaves (mainly the water at 1460nm and 1940nm characteristic absorption peak), so it is very easy to expose the target in the face of hyperspectral reconnaissance

[0005] In order to solve the defect that traditional optical camouflage / stealth materials will be completely exposed under hyperspectral reconnaissance, a series of research on hyperspectral stealth camouflage has been carried out in China. Spectral reflection characteristics and mechanism of plant leaves, developed a series of hyperspectral bionic materials, but the color of these hyperspectral bionic materials in the visible light band is quite different from the color of plant leaves (cannot meet the requirements of GJB1082-91 or GJB798-90 for visible light chromaticity Requirements for scientific data), poor water resistance, weather resistance, corrosion resistance, etc., and poor practicability; some researchers also encapsulated liquid water in the material to simulate the spectral reflection curve of vegetation leaves, but liquid water is difficult to preserve and contains Liquid water can greatly increase the weight of the material, so it has not been widely used

Patent CN102399488 provides a hyperspectral stealth camouflage paint and its preparation method. Although it solves the weather resistance and corrosion resistance of hyperspectral paint, its color is single gray, and it is not a hyperspectral camouflage paint for the background of woodland plants, which cannot meet the requirements. Standard requirements for green vegetation reference standard spectral channels

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