Hyperspectral camouflage fiber fabric based on flocking technology and preparation method thereof

Abstract

The invention discloses a hyperspectral camouflage fiber fabric based on a flocking technology. The hyperspectral camouflage fiber fabric comprises an ultra-black fluff layer, an adhesive layer, a near-infrared absorption layer and an ultra-black base cloth layer which are sequentially arranged from top to bottom. Through a multi-layer synergistic structure, the fitting degree of the material and an ocean background spectrum at the wave band of 400-2500nm reaches 0.91 or above, the characteristics of weak reflection of visible light and strong absorption of near infrared light are reproduced, the problem of poor matching precision is solved, hyperspectral reconnaissance is avoided, and the concealment of ocean equipment is improved. The invention has the advantages of strong environmental adaptability, easy mass production, humidity and heat resistance of grade 1, no abnormity at-20 DEG C to 50 DEG C, and color fastness to sunlight of grade 5, and adapts to complex marine environment; based on a mature flocking technology, complex equipment is not needed, large-scale production can be achieved, and stability and economical efficiency are both considered.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fiber manufacturing, and particularly relates to a hyperspectral camouflage fiber fabric based on flocking technology and a preparation method thereof. BACKGROUND

[0002] In modern reconnaissance technology, the hyperspectral imaging technology can greatly improve the camouflage recognition ability by capturing the subtle spectral reflection difference between the target and the background, and has been widely used in military reconnaissance, ocean monitoring and other fields. As an important strategic scene, the targets such as warships and underwater equipment need to match the hyperspectral characteristics of the ocean background to evade detection, which has become a key direction to improve the survivability on the battlefield.

[0003] However, the current camouflage technology mainly focuses on forest, desert and other land backgrounds, and the research on hyperspectral camouflage of ocean background is still in the blank stage, and the existing materials cannot meet the needs. The spectral characteristics of the ocean are special: the reflectivity in the visible light band (400-760 nm) is weak, showing a gradual change from light blue to dark black, and is affected by the depth of seawater, illumination and other factors; the seawater has strong absorption in the near-infrared band (760-2500 nm), and the reflectivity is usually less than 5%, forming a low reflection baseline. Such weak reflection in the visible light band and strong absorption in the near-infrared band require high spectral regulation of the camouflage material, and traditional single-structure fabrics (such as dyed cloth and coated cloth) can only adjust the reflection in a limited band, and cannot match the ocean spectrum in the whole band, which is easy to be identified.

[0004] In the existing preparation method of camouflage fabric, the dyeing process can match the color in the visible light band, but the near-infrared absorption is weak; the coating process can improve the near-infrared absorption, but it is easy to crack and has poor adhesion, and it is difficult to consider the appearance in the visible light band; the design of micro-nano structure can accurately regulate the spectrum, but the process is complex, the cost is high, and it is difficult to mass-produce in a large area, which cannot meet the needs of ocean equipment. The flocking technology can form a three-dimensional pile layer through a high-voltage electrostatic field, which can regulate the scattering and reflection of light, and can also carry functional materials, but the existing flocking fabric is mainly used for decoration and warmth, and has not been involved in hyperspectral camouflage. The pile is ordinary chemical fiber, and the base fabric does not have the design of strong near-infrared absorption, which cannot match the ocean spectrum.

[0005] In addition, the ocean has high humidity and salt spray, which requires high weather resistance and mechanical strength of the fabric, and the existing camouflage fabric has insufficient design of salt spray resistance and hydrolysis resistance, and the function may degrade after long-term use. Therefore, the development of a hyperspectral camouflage fabric with full-band ocean spectrum matching, excellent environmental adaptability and large-scale preparation capacity is the key to fill the gap in ocean camouflage and improve the concealment of ocean equipment.

[0006] The spectral matching accuracy between the existing camouflage material and the hyperspectral characteristics of the marine background has a significant gap, and cannot cover the full waveband range of visible light-near infrared, which is not matched with the current hyperspectral reconnaissance means of capturing subtle spectral differences. It is easy to cause the target to be exposed under the hyperspectral detection due to the deviation of the spectral curve from the marine background benchmark value (such as the near-infrared reflectivity being higher than 5%, and the visible light reflectivity fluctuation exceeding the natural seawater range). SUMMARY

[0007] To solve the above technical problems, the application provides a hyperspectral camouflage fiber fabric based on the flocking technology and a preparation method thereof, which significantly improves the marine scene service performance of the material, is suitable for hyperspectral simulation and related camouflage fields under the marine background, and can meet the hyperspectral stealth requirements of targets such as ships, underwater equipment and marine operation platforms.

[0008] To solve the above technical problems, an embodiment of the application provides a hyperspectral camouflage fiber fabric based on the flocking technology, which comprises, from top to bottom, a super-black fluff layer, an adhesive layer, a near-infrared absorption layer and a super-black base cloth layer.

[0009] The application further provides a preparation method of the hyperspectral camouflage fiber fabric based on the flocking technology, which comprises the following steps: S1, preparation of dope-colored viscose fiber filaments: disperse carbon black into a certain amount of dispersant solution, stir for 1 h to prepare a carbon black dispersion; add the carbon black dispersion to a viscose spinning solution, stir until uniform to prepare a spinning dope; inject the spinning dope into a wet spinning machine, extrude through the spinning nozzle of the wet spinning machine, and then pass through a coagulation bath and a washing tank in sequence, and then perform drawing and winding to obtain dope-colored viscose fiber filaments; S2, preparation of super-black fluff: treat the dope-colored viscose fiber filaments prepared in step S1, cut the dried filaments into short fiber fluff, then conduct conductive treatment on the short fiber fluff, and finally dry the fluff; S3, preparation of near-infrared strong absorption super-black base cloth: treat the carbon black dope-colored viscose fabric, dry it, and then coat it with an inorganic black pigment paste to prepare a near-infrared strong absorption super-black base cloth; S4, preparation of the hyperspectral camouflage fiber fabric based on the flocking technology: first, coat the surface of the near-infrared strong absorption super-black base cloth prepared in step S3 with an adhesive layer, and then implant the super-black fluff prepared in step S2 by using a high-voltage alternating current electrostatic field after baking and drying to obtain the hyperspectral camouflage fiber fabric based on the flocking technology.

[0010] In step S1, the carbon black is one of carbon black 660R, carbon black MA100, HC250R and carbon black M100A; the dispersant is one of SMA, AD-4600 and NNO, and the amount is 15wt% of the carbon black.

[0011] In step S1, the mass fraction of the carbon black dispersion in the viscose spinning solution is 1-5wt%: The diameter of the jet of the wet spinning machine is 0.05-0.2mm, and the spinning speed is 15-50m / min; The coagulation bath is a 5-10wt% zinc sulfate solution.

[0012] In step S2, the treatment of the original solution colored viscose fiber filament is acid agent treatment or plasma treatment; wherein, The acid agent treatment conditions are: the acid agent is 10-30% acetic acid or 1-5% hydrochloric acid; the temperature is 50-80℃, and the time is 30-50min; The plasma treatment conditions are: the atmosphere is oxygen, the flow rate is 30-60mL / min, the treatment time is 1-3min, the discharge power is 200W, and the vacuum degree is 80Pa.

[0013] In step S2, the length of the short fiber fluff is 1-2mm.

[0014] In step S3, the areal density of the carbon black original solution colored viscose fabric is 80-180g / m 2 ; The treatment of the carbon black original solution colored viscose fabric is acid agent treatment or plasma treatment; wherein, The acid agent treatment conditions are: the acid agent can be 10-30% acetic acid or 1-5% hydrochloric acid; the temperature is 60-80℃, and the time is 40-60min; The plasma treatment conditions are: the atmosphere is oxygen, the flow rate is 30-60mL / min, the treatment time is 1-3min, the discharge power is 200W, and the vacuum degree is 80Pa.

[0015] In step S3, the inorganic pigment color paste is one or more of a chromium black, a copper chromium black or an iron oxide black coating, and the concentration of the inorganic pigment in the color paste is 2-12wt%; The inorganic pigment color paste coating thickness is 0.10-0.25mm.

[0016] In step S4, the adhesive concentration is 15-70g / L, and the thickness is 0.15-0.30mm; The baking conditions are: the temperature is 110-150℃, and the time is 3-5min; The implantation voltage is 5-20kV.

[0017] The application also provides an application of the hyperspectral camouflage fiber based on the flocking technology in the field of marine background hyperspectral / super spectral simulation, which is prepared by the preparation method.

[0018] The beneficial effects of the above technical solutions of the present application are as follows: 1. The present application provides a hyperspectral camouflage fiber fabric based on the flocking technology, which has precise spectral matching and fills the technical gap. Through the multi-layer synergistic structure, the material has a fitting degree of 0.91 or higher in the 400-2500nm waveband with the ocean background spectrum, and can reproduce the characteristics of weak reflection of visible light and strong absorption of near-infrared light, solve the problem of poor matching accuracy, avoid hyperspectral reconnaissance, and improve the concealment of marine equipment.

[0019] 2. The present application has strong environmental adaptability and is easy to mass-produce, with a moisture and heat resistance of 1 level, no abnormality at-20℃-50℃, a light fastness of 5 levels, and adaptability to complex marine environments. Based on mature flocking technology, it can be mass-produced without complex equipment, and has good stability and economy. 3. The application has clear application scenarios and meets the diverse needs of marine equipment: the visible light 60° glossiness is less than or equal to 5, which reduces the risk of visual identification and forms a hyperspectral protection; it is suitable for marine hyperspectral camouflage and can be flexibly applied to ships, underwater equipment, etc., meeting the diverse needs. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a reflection spectrum curve diagram of the present application example 1 in the 400-2500nm waveband; Figure 3 is a reflection spectrum curve diagram of the present application example 2 in the 400-2500nm waveband; Figure 4 is a reflection spectrum curve diagram of the present application comparative example 1 in the 400-2500nm waveband; Figure 5 is a reflection spectrum curve diagram of the present application comparative example 2 in the 400-2500nm waveband. DETAILED DESCRIPTION

[0021] To make the technical problems, technical solutions and advantages of the present application clearer, specific embodiments will be described in detail below with reference to the drawings.

[0022] As shown in Figure 1 , the present application provides a hyperspectral camouflage fiber or fabric based on the flocking technology, which includes, from top to bottom, an ultra-black fluff layer, an adhesive layer, a near-infrared absorption layer and an ultra-black base cloth layer.

[0023] The present application also provides a preparation method of a hyperspectral camouflage fiber or fabric based on the flocking technology, which includes the following steps: S1, preparation of dope colored viscose filament: carbon black is dispersed into a certain amount of dispersant solution, stirred for 1 h to prepare a carbon black dispersion; the carbon black dispersion is added to the viscose spinning solution, stirred until uniform to prepare a spinning dope; the spinning dope is injected into a wet spinning machine, extruded through the spinneret of the wet spinning machine, and sequentially passes through a coagulation bath and a washing tank, and then is drawn and wound to obtain a dope colored viscose filament; in step S1, the carbon black is one of carbon black 660R, carbon black MA100, HC250R, and carbon black M100A; the dispersant is one of SMA, AD-4600, and NNO, and the amount is 15wt% of the carbon black. The mass fraction of the carbon black dispersion in the viscose spinning solution is 1-5wt%: the diameter of the spinneret of the wet spinning machine is 0.05-0.2mm, and the spinning speed is 15-50m / min; the coagulation bath is a 5-10wt% zinc sulfate solution.

[0024] S2, preparation of super-black fluff: the dope colored viscose filament prepared in step S1 is treated, cut into short fiber fluff after drying, then the short fiber fluff is conductive treated, and finally the fluff is dried; in step S2, the treatment of the dope colored viscose filament is acid agent treatment or plasma treatment; wherein, the acid agent treatment conditions are: the acid agent is 10-30% acetic acid or 1-5% hydrochloric acid; the temperature is 50-80℃, and the time is 30-50min; the plasma treatment conditions are: the atmosphere is oxygen, the flow rate is 30-60mL / min, the treatment time is 1-3min, the discharge power is 200W, and the vacuum degree is 80Pa.

[0025] In step S2, the length of the short fiber fluff is 1-2mm.

[0026] S3, preparation of near-infrared strong absorption super-black base fabric: the carbon black dope colored viscose fabric is treated, dried, and coated with an inorganic black pigment paste to prepare a near-infrared strong absorption super-black base fabric; in step S3, the areal density of the carbon black dope colored viscose fabric is 80-180g / m 2 ; the treatment of the carbon black dope colored viscose fabric is acid agent treatment or plasma treatment; wherein, the acid agent treatment conditions are: the acid agent can be 10-30% acetic acid or 1-5% hydrochloric acid; the temperature is 60-80℃, and the time is 40-60min; the plasma treatment conditions are: the atmosphere is oxygen, the flow rate is 30-60mL / min, the treatment time is 1-3min, the discharge power is 200W, and the vacuum degree is 80Pa.

[0027] In step S3, the inorganic pigment paste is one or more of chromium black, copper-chromium black, or iron oxide black coating, and the concentration of the inorganic pigment in the paste is 2-12wt%; the coating thickness of the inorganic pigment paste is 0.10-0.25mm.

[0028] S4, preparation of the hyperspectral camouflage fiber fabric based on the flocking technology: first, coating an adhesive layer on the surface of the near-infrared strong absorption super-black base cloth prepared in step S3, and then implanting the super-black flock prepared in step S2 in a high-voltage alternating electrostatic field after baking and drying, to obtain the hyperspectral camouflage fiber based on the flocking technology.

[0029] In step S4, the adhesive concentration is 15-70 g / L, and the thickness is 0.15-0.30 mm; the baking conditions are as follows: temperature 110-150℃, time 3-5 min; and the implantation voltage is 5-20 kV.

[0030] The application also provides an application of the hyperspectral camouflage fiber based on the flocking technology prepared by the preparation method in the field of marine background high / super-spectral simulation.

[0031] The preferred embodiments of the application are described below, and it should be understood that the embodiments are for better explaining the application and are not used to limit the application.

[0032] Experimental materials: Carbon black 660R is provided by Cabot Corporation; Carbon black MA100 is provided by Mitsubishi Corporation, Japan; HC250R (800 mesh) is provided by Tianjin Yihuachang New Material Technology Co., Ltd.; Carbon black M100A is provided by Henan Yinghui Chemical Co., Ltd.

[0033] Test method: 1. Spectral fitting degree According to GJB 1082A-2021 "Color for camouflage net", the spectral reflectivity of the hyperspectral camouflage fiber fabric based on the flocking technology is tested. An ultraviolet-visible-near-infrared spectrophotometer is used to test the spectral reflectivity curve of the fiber or fabric in the range of 0.4-2.5 μm (2° field of view is used during testing, and the wavelength interval is 1 nm), which is compared with the spectral reflectance curve of the marine background, and the similarity is calculated by the similarity formula, to obtain the similarity between the two corresponding spectral curves. The spectral similarity is calculated according to the following formula (1): Formula (1); In the formula: And respectively represent the spectral values of the kth waveband of the two spectral curves; m represents the total number of wavebands: And represent the mean values of the spectral curves i and j: The similarity of the two spectral curves is represented by, the higher the similarity of the two spectral curves, the value of is closer to 1, and if the two spectral curves are completely the same, is equal to 1.

[0034] visible light 60° gloss According to GB / T 9754-2007 "Color paints and varnishes Determination of 20°, 60°, 85° specular gloss of paint films not containing metallic pigments", the visible light 60° gloss of the hyperspectral camouflage fiber and fabric imitating plant leaves is tested by a gloss meter.

[0035] low temperature resistance According to the provisions of GJB 150.4A-2009 "Laboratory environmental testing methods for military equipment Part 4 Low temperature test", the low temperature environmental adaptability of the hyperspectral camouflage fiber and fabric imitating plant leaves is measured.

[0036] high temperature resistance According to the provisions of GJB 150.3A-2009 "Laboratory environmental testing methods for military equipment Part 3 High temperature test", the high temperature environmental adaptability of the hyperspectral camouflage fiber and fabric imitating plant leaves is measured.

[0037] moist heat resistance According to the provisions of GB / T 1740-2007 "Moist heat resistance of paint film", the moist heat resistance of the hyperspectral camouflage fiber and fabric imitating plant leaves is measured under laboratory conditions.

[0038] fastness to light According to the provisions of GB / T 8427-2019 "Textiles Color fastness test Fastness to artificial light: xenon arc", the moist heat resistance of the hyperspectral-thermal infrared compatible camouflage coating fabric imitating dry sandy land is measured under laboratory conditions.

[0039] Example 1 A preparation method of hyperspectral camouflage fiber based on flocking technology, comprising the following steps: S101, preparation of dope colored viscose filament: 10g carbon black 660R is dispersed into water containing 1.5g SMA, stirred for 1h, to obtain a carbon black dispersion; 4g of the carbon black dispersion is added to 96g of viscose spinning dope, stirred until uniform, to obtain a spinning dope; the spinning dope is injected into a wet spinning machine, extruded through a spinneret with a diameter of 0.15mm at an extrusion speed of 25m / min; and then sequentially passes through an 8wt% zinc sulfate solution (coagulation bath) and a water washing tank, and then is drawn and wound to obtain the dope colored viscose filament.

[0040] S102, preparation of super-black fluff: the dope colored viscose filament is treated in 15% acetic acid solution at 60℃ for 45min, dried, and cut into short fiber fluff with a length of 1.5mm, then the fluff is subjected to conductive treatment, and finally the fluff is dried.

[0041] S103, Preparation of near-infrared strong absorption super black base cloth: the carbon black stock solution coloring viscose fabric with an area density of 100 g / m2 is placed in a 15% acetic acid solution and treated at 80°C for 50 min, then dried, and coated with a copper-chromium black paste with a color paste concentration of 8% after drying, the coating thickness is about 0.17 mm, and a near-infrared strong absorption super black base cloth is prepared.

[0042] S104, Preparation of hyperspectral camouflage fiber fabric based on flocking technology: a polyurethane adhesive with a concentration of 50 g / L is coated on the surface of the near-infrared strong absorption super black base cloth, baked at 130°C for 3 min, and implanted with super black flocking in a 10 kV high-voltage alternating current electrostatic field to prepare a hyperspectral camouflage fiber fabric based on flocking technology.

[0043] Example 2 A method for preparing a hyperspectral camouflage fiber based on flocking technology, comprising the following steps: S201, Preparation of stock solution coloring viscose fiber filament: 10 g of carbon black 660R is dispersed in water containing 1.5 g of SMA, stirred for 1 h to prepare a carbon black dispersion; 4 g of the carbon black dispersion is added to 96 g of viscose spinning solution and stirred until uniform to prepare a spinning stock solution; the spinning stock solution is injected into a wet spinning machine, extruded through a spinneret with a diameter of 0.15 mm at an extrusion speed of 25 m / min; and sequentially passes through an 8 wt% zinc sulfate solution (coagulation bath) and a water washing tank, then undergoes drawing and winding to obtain a stock solution coloring viscose fiber filament.

[0044] S202, Preparation of super black flocking: the stock solution coloring viscose fiber filament is placed in a 15% acetic acid solution and treated at 60°C for 45 min, then dried and cut into short fiber flocking with a length of 1.5 mm, then the flocking is subjected to conductive treatment, and finally the flocking is dried.

[0045] S203, Preparation of near-infrared strong absorption super black base cloth: the stock solution coloring viscose fabric with an area density of 100 g / m 2 The carbon black stock solution coloring viscose fabric is placed in a 15% acetic acid solution and treated at 80°C for 50 min, then dried, and coated with an iron oxide black paste with a color paste concentration of 10% after drying, the coating thickness is about 0.20 mm, and a near-infrared strong absorption super black base cloth is prepared.

[0046] S204, Preparation of hyperspectral camouflage fiber fabric based on flocking technology: a polyurethane adhesive with a concentration of 50 g / L is coated on the surface of the near-infrared strong absorption super black base cloth, baked at 130°C for 3 min, and implanted with super black flocking in a 10 kV high-voltage alternating current electrostatic field to prepare a hyperspectral camouflage fiber fabric based on flocking technology.

[0047] The spectral curves of Example 1 and Example 2 are as follows: Figure 2 and3 As shown in Table 1, the conclusion is that the spectral fitting degree of Example 1 and Example 2 with the marine background is better, all >0.90 (as shown in Table 1), and the fastness properties are good, and the gloss is low, as shown in Table 1 and Table 2.

[0048] Comparative Example 1 A method for preparing a black fabric, comprising the following steps: a face density of 100 g / m 2 The carbon black stock solution colored viscose fabric is placed in a 15% acetic acid solution and treated at 80°C for 50 min, then dried, and coated with a 10% iron oxide black paste with a coating thickness of about 0.20 mm, to obtain a black fabric.

[0049] The spectral curve of Comparative Example 1 is shown in Figure 2. Figure 4 As shown in Table 1, the conclusion is that the spectral fitting degree of Example 1 and Example 2 with the marine background is better, all >0.90 (as shown in Table 1), and the fastness properties are good, and the gloss is low, as shown in Table 1 and Table 2.

[0050] Comparative Example 2 A method for preparing a black fabric, comprising the following steps: (1) 10 g of carbon black 660R is dispersed in water containing 1.5 g of SMA, stirred for 1 h, to obtain a carbon black dispersion; 4 g of the carbon black dispersion is added to 96 g of viscose spinning solution, stirred until uniform, to obtain a spinning stock solution; the spinning stock solution is injected into a wet spinning machine, extruded through a spinneret with a diameter of 0.15 mm at an extrusion speed of 25 m / min; and sequentially passes through a 8 wt% zinc sulfate solution (coagulation bath) and a water washing tank, then is drawn and wound, to obtain a stock solution colored viscose filament.

[0051] (2) The stock solution colored viscose filament is placed in a 15% acetic acid solution and treated at 60°C for 45 min, then dried, and cut into short fiber pile with a length of 1.5 mm, then the pile is conductively treated, and finally the pile is dried.

[0052] (3) A polyurethane adhesive with a concentration of 50 g / L is coated on the surface of the stock solution colored viscose fabric with a face density of 100 g / m 2 The carbon black stock solution colored viscose fabric is placed in a 15% acetic acid solution and treated at 80°C for 50 min, then dried, and coated with a 10% iron oxide black paste with a coating thickness of about 0.20 mm, to obtain a black fabric.

[0053] The spectral curve of Comparative Example 2 is shown in Figure 2. Figure 5 As shown in Table 1, the conclusion is that the spectral fitting degree of Example 1 and Example 2 with the marine background is better, all >0.90 (as shown in Table 1), and the fastness properties are good, and the gloss is low, as shown in Table 1 and Table 2.

[0054] Table 1 Spectral similarity of samples and plant leaves Table 2 Physical properties of samples The present application aims at the defects of poor matching precision, weak environmental adaptability and difficult scale production of existing camouflage materials, and innovatively prepares hyperspectral camouflage fiber fabric based on the flocking technology. The core innovation is the multi-layer synergistic structure, application of functional materials and the empowerment of the flocking technology: the super-black flock layer and base fabric layer are constructed by carbon black stock solution colored viscose fiber, and the near-infrared absorption layer is matched to form a visible light-near-infrared full-band regulation system; the flocking technology forms a three-dimensional flock layer by high-voltage electrostatic field, regulates light scattering and reflection, improves light absorption and reduces reflection, and helps the spectral fitting degree to be above 0.91. Through high-voltage electrostatic flocking and precise coating process, the functional layers are firmly combined, overcoming the problem of easy falling off and unstable performance of traditional fabric functional layers. The super-black material and inorganic pigment optimize the spectral matching and weather resistance. The design forms a long-acting marine camouflage mechanism, solves the limitations of traditional materials, realizes long-acting stability of hyperspectral simulation, and has great value in the field of marine hyperspectral camouflage.

[0055] The above is the preferred embodiment of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. A hyperspectral camouflage fiber fabric based on flocking technology, characterized in that, It includes, from top to bottom, an ultra-black fleece layer, an adhesive layer, a near-infrared absorption layer, and an ultra-black base fabric layer.

2. A method for preparing a hyperspectral camouflage fiber fabric based on flocking technology as described in claim 1, characterized in that, Includes the following steps: S1. Preparation of solution-dyed viscose fiber filaments: Carbon black is dispersed in a certain amount of dispersant solution and stirred for 1 hour to obtain a carbon black dispersion; the carbon black dispersion is added to the viscose spinning solution and stirred until uniform to obtain a spinning solution; the spinning solution is injected into a wet spinning machine, extruded through the spinneret of the wet spinning machine, and passed through a coagulation bath and a washing tank in sequence, and then drawn and wound to obtain solution-dyed viscose fiber filaments; S2. Preparation of super black fluff: The solution-dyed viscose fiber filaments prepared in step S1 are treated, dried and cut into short fiber fluffs, then the short fiber fluffs are subjected to conductive treatment, and finally the fluffs are dried. S3. Preparation of near-infrared strong absorption super black base fabric: After treating the viscose fabric dyed with carbon black raw solution, drying it, and coating it with inorganic black pigment paste, near-infrared strong absorption super black base fabric is obtained. S4. Preparation of hyperspectral camouflage fiber fabric based on flocking technology: First, the surface of the near-infrared strong absorption ultra-black base fabric prepared in step S3 is coated with an adhesive layer, baked and dried, and then the ultra-black fluff prepared in step S2 is implanted using a high voltage AC electrostatic field to obtain hyperspectral camouflage fiber based on flocking technology.

3. The method for preparing hyperspectral camouflage fiber fabric based on flocking technology according to claim 2, characterized in that, In step S1, the carbon black is one of carbon black 660R, carbon black MA100, HC250R and carbon black M100A; the dispersant is one of SMA, AD-4600 and NNO, and the amount used is 15wt% of carbon black.

4. The method for preparing hyperspectral camouflage fiber fabric based on flocking technology according to claim 2, characterized in that, In step S1, The carbon black dispersion accounts for 1-5 wt% of the viscose spinning solution. The spinneret diameter of the wet spinning machine is 0.05~0.2mm, and the spinning speed is 15~50m / min; The coagulation bath is a 5-10 wt% zinc sulfate solution.

5. The method for preparing hyperspectral camouflage fiber fabric based on flocking technology according to claim 2, characterized in that, In step S2, the treatment of the solution-dyed viscose fiber filaments is either acid treatment or plasma treatment; wherein, The acid treatment conditions are as follows: the acid is 10-30% acetic acid or 1%-5% hydrochloric acid; the temperature is 50-80℃; and the time is 30-50 minutes. The plasma treatment conditions are as follows: oxygen atmosphere, flow rate of 30~60 mL / min, treatment time of 1~3 min, discharge power of 200 W, and vacuum degree of 80 Pa.

6. The method for preparing hyperspectral camouflage fiber fabric based on flocking technology according to claim 2, characterized in that, In step S2, the length of the short fiber fluff is 1~2mm.

7. The method for preparing hyperspectral camouflage fiber fabric based on flocking technology according to claim 2, characterized in that, In step S3, the areal density of the viscose fabric dyed with carbon black solution is 80~180 g / m². 2 ; The treatment of viscose fabrics dyed with carbon black solution involves acid treatment or plasma treatment; among them, The acid treatment conditions are as follows: the acid can be 10-30% acetic acid or 1%-5% hydrochloric acid; the temperature is 60-80℃; and the time is 40-60 minutes. The plasma treatment conditions are as follows: oxygen atmosphere, flow rate of 30~60 mL / min, treatment time of 1~3 min, discharge power of 200 W, and vacuum degree of 80 Pa.

8. The method for preparing hyperspectral camouflage fiber fabric based on flocking technology according to claim 2, characterized in that, In step S3, the inorganic pigment paste is one or more of chrome black, copper chrome black, or iron oxide black coatings, and the concentration of inorganic pigment in the paste is 2-12 wt%. The thickness of the inorganic pigment paste coating is 0.10~0.25mm.

9. The method for preparing hyperspectral camouflage fiber fabric based on flocking technology according to claim 2, characterized in that, In step S4, the adhesive concentration is 15~70g / L and the thickness is 0.15~0.30mm; The baking conditions are: temperature 110~150℃, time 3~5min; The implantation voltage is 5~20 kV.

10. An application of a hyperspectral camouflage fiber based on flocking technology prepared by the preparation method as described in any one of claims 2-9 in the field of hyperspectral / hyperspectral simulation of marine background.

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