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Preparation method of radar wave absorption composite material with infrared stealth

A technology that absorbs composite materials and radar waves. It is applied in special leather manufacturing, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., to achieve infrared stealth effect and reduce Effects of IR emissivity, enhanced multilevel diffuse reflection, and scattering loss

Inactive Publication Date: 2020-06-16
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, the previous dual stealth materials achieved infrared stealth by increasing the reflectivity of the material, which contradicts the principle of radar stealth

Method used

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  • Preparation method of radar wave absorption composite material with infrared stealth
  • Preparation method of radar wave absorption composite material with infrared stealth
  • Preparation method of radar wave absorption composite material with infrared stealth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Get 100g leather and 5g nano-silver ion, in 100mL secondary water, carry out adsorption reaction under strong mechanical force (stirring) at room temperature, after 4h, add reducing agent sodium borohydride (molar ratio Ag + : NaBH 4 =1:1) to reduce silver ions, after washing and drying, the composite material (leather-Ag 5％ ). Such as figure 1 Shown, Leather-Ag 5％ It has a strong absorption effect on radar waves, and the maximum RL can reach -10dB.

Embodiment 2

[0042]Get 100g leather and 10g nanometer silver ion, in 100mL secondary water, carry out adsorption reaction under strong mechanical force at room temperature, after 4h, add reducing agent sodium borohydride (molar ratio Ag + : NaBH 4 =1:1) to reduce silver ions, after washing and drying, the composite material (leather-Ag 10％ ). Such as figure 2 Shown, Leather-Ag 10％ It has a strong absorption effect on radar waves, and the maximum RL can reach -22dB.

Embodiment 3

[0044] Get 100g leather and 30g nano-silver ion, in 100mL secondary water, carry out adsorption reaction under strong mechanical force at room temperature, after 4h, add reducing agent sodium borohydride (molar ratio Ag + : NaBH 4 =1:1) to reduce silver ions, after washing and drying, the composite material (leather-Ag 30％ ). Such as image 3 Shown, Leather-Ag 10％ The maximum RL for radar waves can reach -17dB. And by testing its infrared emissivity of 0.77 in 8-14μm.

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Abstract

The invention discloses a preparation method of a radar wave absorption composite material with an infrared stealth function. The preparation method comprises the following steps: preparing a metal particle complex (BM-M) having absorption performance and loaded on a base material by utilizing a chemical reaction between the base material and metal ions, and loading and storing a phase change material PCM by utilizing hydrophobicity and porous structure characteristics of the base material to prepare the product BM-M / PCM. The composite material prepared by the invention has the characteristicsof softness and high mechanical strength, so that the radar wave stealth and infrared stealth compatible leather prepared by taking the leather as the base material has the characteristics of being bendable and wearable.

Description

technical field [0001] The invention belongs to the research field of functional materials, and in particular relates to a preparation method of a radar wave absorbing composite material with infrared stealth. Background technique [0002] Multifunctional stealth materials have broad application prospects in the military field. Among them, the double stealth material with radar stealth and infrared stealth is of great significance in the protection of important military targets and individual combat. However, radar stealth is based on the principle of absorption, that is, through the absorption of radar waves to reduce the reflection of radar waves on the surface of the target to achieve radar stealth, while infrared stealth mainly uses the principle of reflecting infrared rays by increasing the reflectivity of the surface of the object. Realize infrared stealth. The contradiction in realization principle of radar stealth and infrared stealth makes the preparation of radar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C14C13/00
CPCC08J9/42C14C13/00C08J2483/04
Inventor 黄鑫王晓玲王亚平柯乐石碧
Owner SICHUAN UNIV
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