Infrared stealth material with multi-layer structure

A technology of stealth material and multi-layer structure, applied in the field of flexible materials, can solve the problems of complex preparation process, high cost, environmental pollution, etc., and achieve the effects of simple preparation process, low overall cost and low environmental pollution

Active Publication Date: 2020-12-08
南京纳铠生物医药科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of some stealth fabrics or systems is complicated, the cost is high, and the raw materials and the preparation process have great pollution to the environment; some stealth shielding systems are too complicated to be carried by individual soldiers; Achievable performance is usually limited, it is difficult to achieve long-term effective infrared stealth

Method used

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  • Infrared stealth material with multi-layer structure
  • Infrared stealth material with multi-layer structure
  • Infrared stealth material with multi-layer structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] combined with figure 1 , a kind of infrared stealth material with an auxiliary layer added on one side, which is the core layer, namely the hydrogel layer 4) and the heat insulation layer 9 in sequence.

[0032] Wherein: the hydrogel layer 4 is polyacrylamide hydrogel containing calcium chloride electrolyte. The heat insulating layer 9 is an air bubble cushion coated with a heat reflective coating (or heat reflective paint).

[0033] During the preparation, the hydrogel was flatly spread on the air bubble pad with a thickness of 1 mm and the thickness of the air bubble pad was 2 mm. The layers are secured with seams.

[0034] To test its infrared stealth performance, the temperature of the hot stage is controlled at 35°C, the material is covered on the hot stage, and the infrared detector is used to detect it every ten minutes to achieve complete infrared stealth for one hour.

Embodiment 2

[0036] combined with figure 2 , an infrared stealth material with an auxiliary layer added on one side, comprising a hydrogel layer 4, a heat insulating layer 9, and a heat conducting layer 10 from top to bottom.

[0037] Wherein the hydrogel layer 1 is a starch hydrogel containing calcium chloride electrolyte; the heat insulating layer 9 is a heat insulating air bubble pad; the heat conducting layer 10 is selected to have good thermal conductivity and can adhere to the heat conducting carbon on the surface of the material black powder.

[0038] During preparation, spread the hydrogel on the thermal insulation air cushion with a thickness of 2 mm, and the thermal insulation air cushion with a thickness of 0.5 mm, and spray a layer of thermally conductive graphite powder on the hydrogel with a thickness of 0.1 mm. The layers are secured with sutures.

[0039] Cover the bare arm with the material, and use an infrared detector to detect it every ten minutes. The results show t...

Embodiment 3

[0042] combined with image 3 ,, an infrared stealth material with a double-layer double-sided structure, from top to bottom is the environment adaptive layer 1, the first heat insulation layer 2, the first heat conduction layer 3, the hydrogel layer 4, and the second heat insulation layer 5. The second heat-conducting layer 6 , the air-permeable fabric layer 7 , and the heat-conducting fixing device 8 .

[0043] Wherein the environmental adaptation layer 1 adopts high-strength fabric coated with high-density polyethylene grafted maleic anhydride coating film and camouflage ink composite layer; the first heat insulation layer 2 and the second heat insulation layer 5 adopt thermal insulation Paper; the first heat conduction layer 3 and the second heat conduction layer 6 adopt heat conduction graphene; the hydrogel layer 4 adopts starch hydrogel containing magnesium nitrate electrolyte and compounded silicon carbide fiber; the breathable fabric layer 7 Soft breathable cotton fi...

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Abstract

The invention discloses an infrared stealth material with a multilayer structure. A core layer is hydrogel, and an auxiliary layer / auxiliary layers is / are added to one side or both sides of the core layer. The hydrogel has high specific heat capacity, and can absorb a large amount of heat on the premise of no significant change in temperature to achieve the function of heat buffering; the hydrogelserves as the core layer, so that the thermal infrared characteristics of covered objects can be reduced, and self-adaption to the environmental infrared radiation characteristics is realized to achieve infrared stealth. When the hydrogel serves as a cover, a heat-conductive fixing device is arranged on the edge of the infrared stealth material, and is communicated with a heat conducting layer toachieve controllable directional heat conduction; radar wave absorbing materials can be composited on any layer of the multilayer structure, and an infrared radiation and camouflage layer can be prepared at the outermost layer, so that infrared, radar wave and visual stealth is realized at the same time; the multilayer structure can be lined with breathable fabric to meet the air-permeability requirements of soldiers during long-time hiding. The infrared stealth material with high infrared, radar and visible-light stealth capability has the advantages of simple preparation process, low cost,portability and multifunction.

Description

technical field [0001] The invention relates to a flexible material with a multilayer structure, in particular to an infrared stealth material with a multilayer structure. Background technique [0002] In the field of military operations, infrared reconnaissance and surveillance technology has become more and more mature and has become an essential military technology, making it difficult for conventional trees and night to cover combatants. The current conventional method is to cover the human body with low-heat radiation blankets and other auxiliary materials to realize infrared stealth and avoid infrared detection. However, as time increases, the surface of the shelter will still appear higher than the surrounding environment, so it is easy to be detected by infrared detection equipment. Detect and expose the target. Recently, several reports have disclosed fabrics or systems that achieve long-term infrared stealth. However, the preparation process of some stealth fabri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/02B32B29/00B32B9/00B32B9/06B32B9/02B32B9/04A41D31/02A41D31/08A41D31/26A41D31/04
CPCA41D31/02B32B5/02B32B9/00B32B9/007B32B9/04B32B9/047B32B9/06B32B29/00B32B2262/062
Inventor 杨磊林潇殷杰伟
Owner 南京纳铠生物医药科技有限公司
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