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CN-122011821-A - Flexible dark green camouflage fabric with high, medium and low infrared emissivity and three-level regulation and control function and preparation method thereof

CN122011821ACN 122011821 ACN122011821 ACN 122011821ACN-122011821-A

Abstract

The invention discloses a flexible dark green camouflage fabric with high, middle and low three-level regulation and control of infrared emissivity and a preparation method thereof, and belongs to the technical field of camouflage fabrics. The fabric comprises a substrate layer and a functional structure layer, wherein the functional structure layer is a structure A or a structure B coated on the substrate layer, the structure A is a high-emissivity visible light-thermal infrared compatible camouflage coating or a medium-emissivity visible light-thermal infrared compatible camouflage coating, the structure B is an infrared high-reflectivity layer and a low-emissivity visible light-thermal infrared compatible camouflage coating, the low-emissivity visible light-thermal infrared compatible camouflage coating is positioned on the top layer, and the control of the wide-range and accurate emissivity from 0.68 (low) to 0.89 (high) is realized by utilizing a secondary reflection mechanism of the infrared high-reflectivity layer and combining with the regulation of the aluminum powder content of the visible light-thermal infrared compatible camouflage coating. According to the invention, the optical homochromatic different emissivity is realized on the textile material through different layered structure designs for the first time, so that the textile with the same color can be matched with different infrared thermal backgrounds, and the true multispectral compatible camouflage is realized.

Inventors

  • WANG BO
  • PENG RUIHUI
  • GUAN JINGYI
  • XIAO YANLI
  • SUN DIANXING
  • QIAN HAINING
  • LIU NANA
  • WANG CHENXU

Assignees

  • 哈尔滨工程大学
  • 青岛哈尔滨工程大学创新发展中心

Dates

Publication Date
20260512
Application Date
20260130

Claims (10)

  1. 1. The flexible dark green camouflage fabric with the high, medium and low infrared emittance can be regulated and controlled at three levels, and is characterized by comprising a substrate layer and a functional structure layer, wherein the functional structure layer is a structure A or a structure B coated on the substrate layer, the structure A is a high-emissivity visible light-thermal infrared compatible camouflage coating or a medium-emissivity visible light-thermal infrared compatible camouflage coating, the structure B comprises an infrared high-reflectivity layer and a low-emissivity visible light-thermal infrared compatible camouflage coating, the low-emissivity visible light-thermal infrared compatible camouflage coating is positioned on the top layer, and the infrared high-reflectivity layer comprises aluminum powder.
  2. 2. The flexible dark green camouflage fabric according to claim 1, wherein the high emissivity visible light-thermal infrared compatible camouflage coating comprises 48-50% of aqueous adhesive, 46-50% of aqueous color paste, 0.1-0.3% of defoamer, 2-3% of friction-resistant auxiliary agent and 100% of sum of the mass percentages of the components; The medium-emissivity visible light-thermal infrared compatible camouflage coating or the low-emissivity visible light-thermal infrared compatible camouflage coating comprises 48-50% of aqueous adhesive, 44-48% of aqueous color paste, 1.9-2.0% of infrared control filler, 0.1-0.3% of defoamer, 2-3% of friction-resistant auxiliary agent and 100% of sum of the mass percentages of the components.
  3. 3. The flexible dark green camouflage fabric according to claim 2, wherein the high emissivity visible light-thermal infrared compatible camouflage coating comprises, by mass, the aqueous slurry of 46% -50% comprising 12.0% -13.0% of chrome yellow paste, 32.7% -35.5% of chrome oxide green paste, 1.0% -1.2% of iron oxide red paste, and 0.3% -0.4% of carbon black paste; the medium emissivity visible light-thermal infrared compatible camouflage coating comprises, by mass, 44% -48% of aqueous slurry, 32.9% -35.1% of cobalt chrome green paste, 1.1% -1.3% of iron oxide red paste and 0.5% -0.6% of carbon black paste; the low-emissivity visible light-thermal infrared compatible camouflage coating comprises, by mass, 44% -48% of aqueous slurry, 33.2% -10.7% of medium chrome yellow paste, 33.2% -35.7% of cobalt chrome green paste, 1.1% -1.3% of iron oxide red paste and 0.5% -0.6% of carbon black paste; the infrared control filler is aluminum powder.
  4. 4. The flexible dark green camouflage fabric according to claim 3, wherein the chrome oxide green paste is composed of 68% -70% of chrome oxide green pigment, 20% -22% of deionized water, 6% -8% of dispersing agent and 0.2% -0.4% of defoaming agent, and the sum of the mass percentages of the components is 100%; The iron oxide red color paste consists of 48% -50% of iron oxide red pigment, 41% -43% of deionized water, 6% -8% of dispersing agent and 0.2% -0.4% of defoaming agent, wherein the sum of the mass percentages of the components is 100%; The medium chrome yellow paste consists of 58% -60% of medium chrome yellow pigment, 30% -32% of deionized water, 6% -8% of dispersing agent and 0.2% -0.4% of defoaming agent, wherein the sum of the mass percentages of the components is 100%; the cobalt chromium green paste consists of 68% -70% of cobalt chromium green pigment, 20% -22% of deionized water, 6% -8% of dispersing agent and 0.2% -0.4% of defoaming agent, wherein the sum of the mass percentages of the components is 100%; The carbon black color paste consists of 18-20% of carbon black pigment, 66-68% of deionized water, 10-12% of dispersing agent and 0.2-0.4% of defoaming agent, wherein the sum of the mass percentages of the components is 100%.
  5. 5. The flexible dark green camouflage fabric of claim 1, wherein the infrared high-reflection layer comprises 48-50% of aqueous adhesive, 22-23% of aluminum powder, 22-23% of distilled water, 4-5% of dispersing agent, 0.4-0.8% of defoamer and 100% of sum of the mass percentages of the components.
  6. 6. The flexible dark green camouflage fabric of claim 1, further comprising a flame retardant layer between the substrate layer and the functional structural layer, wherein the substrate layer is a polyester woven or knit fabric.
  7. 7. The method for preparing the flexible dark green camouflage fabric according to any one of claims 1 to 6, which is characterized by comprising the following steps: Coating high-emissivity visible light-thermal infrared compatible camouflage coating slurry and medium-emissivity visible light-thermal infrared compatible camouflage coating slurry on the surface of a substrate respectively, and curing to obtain high-emissivity dark green visible-infrared compatible camouflage fabric and medium-emissivity dark green visible-infrared compatible camouflage fabric; And 2, coating the infrared high-reflection layer slurry on the surface of the substrate for curing, and coating the low-emissivity visible light-thermal infrared compatible camouflage coating slurry after curing and curing to obtain the low-emissivity dark green visible-infrared compatible camouflage fabric.
  8. 8. The method of producing a flexible dark green camouflage fabric of claim 7, wherein the high emissivity visible light-thermal infrared compatible camouflage coating slurry, the medium emissivity visible light-thermal infrared compatible camouflage coating slurry, or the low emissivity visible light-thermal infrared compatible camouflage coating slurry is produced by: Step 1, putting an aqueous adhesive into a stirring kettle, sequentially and slowly adding color paste or color paste and aluminum powder at a stirring rotation speed of 300-400 r/min, and after the addition, raising the stirring rotation speed to 1000-1100 r/min and continuously stirring for 30-35 min; And 2, adding a defoaming agent and an antifriction auxiliary agent, stirring for 15-20 min at the rotating speed of 600-700 r/min, and discharging to obtain the dark green camouflage coating slurry.
  9. 9. The method of producing a flexible dark green camouflage fabric of claim 7, wherein the infrared highly reflective layer slurry is produced by: (1) Mixing a dispersing agent, a defoaming agent and deionized water, and stirring for 5min at a rotating speed of 500-600 r/min to fully disperse the auxiliary agent; (2) Slowly adding aluminum powder at a rotating speed of 300-400 r/min, and after all the aluminum powder is added, raising the rotating speed to 800-900 r/min, and continuously stirring for 30-35 min to obtain uniform aluminum powder dispersion; (3) Slowly adding the aluminum powder dispersion liquid into the aqueous adhesive emulsion, synchronously adding the defoaming agent, and stirring for 30-35 min at the rotating speed of 1000-1100 r/min to ensure uniform mixing, thereby finally obtaining the infrared high-reflection layer slurry.
  10. 10. The method for preparing the flexible dark green camouflage fabric according to claim 7, wherein the high emissivity visible light-thermal infrared compatible camouflage coating slurry, the medium emissivity visible light-thermal infrared compatible camouflage coating slurry and the low emissivity visible light-thermal infrared compatible camouflage coating slurry have a curing temperature of 140-150 ℃ for 4-5 min and a dry film weight increase of 25-30 g/m 2 , the infrared high reflection layer slurry has a curing temperature of 100-110 ℃ and a dry film weight increase of 4-5 min of 10-25 g/m 2 , in the step 1 or the step 2, the flame retardant layer slurry is coated on the surface of the substrate, and then the functional layer slurry is coated, wherein the flame retardant layer dry film weight increase is 30-35 g/m 2 .

Description

Flexible dark green camouflage fabric with high, medium and low infrared emissivity and three-level regulation and control function and preparation method thereof Technical Field The invention belongs to the technical field of camouflage fabrics, and particularly relates to a flexible dark green camouflage fabric with high, medium and low three-level regulation and control of infrared emissivity and a preparation method thereof. Background Conventional camouflage fabrics often achieve camouflage by camouflage patterns in the visible light band, but have heat radiation characteristics that are difficult to match with the natural background in the thermal infrared band. The prior art has the main defects that (1) the materials with the same color and the same emissivity have fixed infrared emissivity and cannot meet the requirements of different thermal backgrounds (such as grasslands under sunlight and lands under shadow). (2) The function is single, and most materials are difficult to realize the infrared emissivity which can be accurately regulated and controlled in a wide range on the same fabric. (3) The traditional material is heavy and rigid, and can not realize rapid and dynamic camouflage mode switching. (4) The environment durability is insufficient, the performance is poor in flame retardance, wear resistance, weather resistance and the like, and the complex and harsh outdoor application requirements are difficult to meet. Therefore, there is an urgent need to develop a novel textile material capable of achieving a wide range of adjustability of infrared emissivity, multispectral compatibility, durability, and dynamic camouflage capability. Disclosure of Invention The invention provides a composite fabric with wide-range adjustable infrared emissivity, visible light-thermal infrared multispectral compatibility, excellent comprehensive performance and dynamic camouflage capability and a preparation method thereof, and the composite fabric is used for overcoming the defects that the existing camouflage material is difficult to be compatible in visible light and thermal infrared wave bands, is not adjustable in emissivity, is poor in environmental durability and cannot realize dynamic camouflage. The invention provides a flexible dark green camouflage fabric with high, medium and low infrared emittance, which comprises a substrate layer and a functional structure layer, wherein the substrate layer is polyester woven fabric or knitted fabric, the functional structure layer is a structure A or a structure B coated on the substrate layer, the structure A is a high-emissivity visible light-thermal infrared compatible camouflage coating or a medium-emissivity visible light-thermal infrared compatible camouflage coating, the structure B is an infrared high-reflectivity layer and a low-emissivity visible light-thermal infrared compatible camouflage coating, the low-emissivity visible light-thermal infrared compatible camouflage coating is positioned on the top layer, and the infrared high-reflectivity layer comprises aluminum powder. Further, the high-emissivity visible light-thermal infrared compatible camouflage coating comprises 48-50% of aqueous adhesive, 46-50% of aqueous color paste, 0.1-0.3% of defoamer and 2-3% of friction-resistant auxiliary agent by mass percent, the sum of the mass percentages of the components is 100%, and the aqueous color paste consists of medium chrome yellow paste, chrome oxide green paste, iron oxide red paste, cobalt chrome green paste and carbon black paste according to a specific proportion. The medium-emissivity visible light-thermal infrared compatible camouflage coating or the low-emissivity visible light-thermal infrared compatible camouflage coating comprises 48-50% of aqueous adhesive, 44-48% of aqueous color paste, 1.9-2.0% of infrared control filler, 0.1-0.3% of defoamer, 2-3% of friction-resistant auxiliary agent and 100% of sum of the mass percentages of the components. Further, the high-emissivity visible light-thermal infrared compatible camouflage coating comprises, by mass, 12.0% -13.0% of chrome yellow paste, 32.7% -35.5% of chrome oxide green paste, 1.0% -1.2% of iron oxide red paste and 0.3% -0.4% of carbon black paste; the medium emissivity visible light-thermal infrared compatible camouflage coating comprises, by mass, 44% -48% of aqueous slurry, 32.9% -35.1% of cobalt chrome green paste, 1.1% -1.3% of iron oxide red paste and 0.5% -0.6% of carbon black paste; the low-emissivity visible light-thermal infrared compatible camouflage coating comprises, by mass, 44% -48% of aqueous slurry, 33.2% -10.7% of medium chrome yellow paste, 33.2% -35.7% of cobalt chrome green paste, 1.1% -1.3% of iron oxide red paste and 0.5% -0.6% of carbon black paste; the infrared control filler is aluminum powder. Further, the chromium oxide green paste is composed of 68% -70% of chromium oxide green pigment, 20% -22% of deionized water, 6% -8% of dispersing agent and 0.2% -0.4