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A kind of infrared stealth bionic material and preparation method thereof

A biomimetic material, infrared technology, applied in textiles and papermaking, etc., can solve the problems of narrow temperature control range, short infrared stealth time, unable to adapt to changes with the environment, etc., and achieve the effect of reducing moisture permeability and adaptive infrared fusion.

Active Publication Date: 2019-11-12
JIANGSU HAOSAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Infrared coatings are easy to fall off, easy to fail due to high temperature and attached dust, and cannot adapt to changes with the environment; the heat capacity of phase change heat storage materials is limited, the infrared stealth time is short, and the temperature control range is narrow; the heat capacity of composite materials, temperature adjustment More limited capability than phase change heat storage materials, unable to achieve adaptive infrared fusion with the background
[0005] At present, the research on bionic materials based on plant leaves at home and abroad, in the military field, the main research hotspots are based on the spectral reflection characteristics of plant leaves and the research on spectrally adaptive bionic materials for visible light and hyperspectral detection; Infrared reconnaissance and guidance in the infrared band are less involved in temperature-adaptive bionic materials

Method used

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  • A kind of infrared stealth bionic material and preparation method thereof
  • A kind of infrared stealth bionic material and preparation method thereof
  • A kind of infrared stealth bionic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of an infrared stealth bionic material, comprising the following steps:

[0022] (1) Configure the porous and breathable skin layer emulsion according to the components listed in Example 1 in Table 1 and their mass fractions: the surface layer polyurethane resin is a hydrolysis-resistant polyurethane surface layer resin solution, and the 100% modulus is 40Mpa ; The porogen is polyethylene glycol 200; The soft segment is polyolefin polyol; The hard segment is polyisocyanate.

[0023] (2) According to the components listed in Table 1 and their mass fractions, foam together on waterproof and heat-insulating cloth (0.2mm thick) to prepare a water absorption / water retention and moisture transmission layer, with a thickness of 5mm; the temperature for co-foaming is 120°C, the time is 5h.

[0024] (3) Spray the porous breathable skin layer emulsion obtained in step (1) on the water absorption / water retention and moisture transmission layer obtained in ste...

Embodiment 2

[0026] A preparation method of an infrared stealth bionic material, comprising the following steps:

[0027] (1) According to the components listed in Example 1 in Table 1 and their mass parts, the porous and breathable skin layer emulsion is configured: the surface layer polyurethane resin is a hydrolysis-resistant polyurethane surface layer resin solution, and the 100% modulus is 60Mpa; The porogen is polyethylene glycol 200; the soft segment is polyolefin polyol; and the hard segment is polyisocyanate.

[0028] (2) According to the components listed in Table 1 and their mass fractions, foam together on waterproof and heat-insulating cloth (0.4mm thick) to prepare a water absorption / water retention and moisture transmission layer with a thickness of 6mm; the temperature for co-foaming is 110°C, the time is 4.5h.

[0029] (3) Spray the porous breathable skin layer emulsion obtained in step (1) on the water absorption / water retention and moisture transmission layer obtained i...

Embodiment 3

[0031] A preparation method of an infrared stealth bionic material, comprising the following steps:

[0032] (1) Configure the porous and breathable skin layer emulsion according to the components listed in Example 1 in Table 1 and their mass fractions: the surface layer polyurethane resin is a hydrolysis-resistant polyurethane surface layer resin solution, and the 100% modulus is 80Mpa ; The porogen is polyethylene glycol 200; The soft segment is polyolefin polyol; The hard segment is polyisocyanate.

[0033] (2) According to the components listed in Table 1 and their mass fractions, the water absorption / water retention and moisture transmission layer is prepared by co-foaming on the waterproof and heat-insulating cloth (0.6mm thick), with a thickness of 8mm; the co-foaming temperature is 100°C, the time is 4h.

[0034] (3) Spray the porous breathable skin layer emulsion obtained in step (1) on the water absorption / water retention and moisture transmission layer obtained in ...

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Abstract

The invention discloses an infrared stealth biomimetic material and a preparation method thereof. The infrared stealth biomimetic material has a three-layer composite structure, namely a porous air-permeable surface layer, a water-absorbing / water-retaining and moisture transmission intermediate layer and a waterproof base layer. The preparation method comprises the following steps: firstly commonly foaming polyisocyanate emulsion, polyurethane emulsion, super absorbent and retention resin, fibers, a hygroscopic agent, a hydrophilic agent and auxiliaries on the waterproof base layer to generate the water-absorbing / water-retaining and moisture transmission layer; then combining solvent polyurethane slurry with a pore-foaming agent, soft segment and hard segment materials to form the porous air-permeable layer emulsion, and spraying to the intermediate layer at high pressure to form the porous air-permeable surface layer; and drying and curing to obtain the infrared stealth biomimetic material. The infrared stealth biominmetic material has a great number of micron-scale micropores which are communicated one another, and has good mechanical performance, reasonable porosity, bidirectional heat and moisture migration characteristic and surface automatic temperature adjustment characteristic.

Description

technical field [0001] The invention relates to an infrared stealth material, in particular to an infrared stealth bionic material and a preparation method thereof. Background technique [0002] At present, the surface skin of most military targets is a metal with a small heat capacity, and its thermal characteristics are quite different from the background, resulting in a big difference between the surface temperature change and the background, which leads to the infrared exposure symptoms of the target being in the background. Very prominent, vulnerable to infrared recognition and strikes. [0003] The infrared radiation of the target is mainly related to the emissivity and temperature of the target surface. Therefore, infrared stealth materials are divided into two types: controlling the emissivity and controlling the temperature. In contrast, temperature is the most important factor affecting infrared radiation, so controlling temperature has become the most important c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14D06N3/18
CPCD06N3/0043D06N3/0059D06N3/142D06N3/145D06N3/183D06N2209/08
Inventor 吴登林沈卫东宋思洪吴国强阮喻王盛春鹿丙峰
Owner JIANGSU HAOSAI TECH CO LTD