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Preparation method of vegetation background bionic composite membrane material

A composite film and background technology, applied in the field of bionic materials, can solve the problems of difficult to achieve all-day fusion of camouflage targets and vegetation backgrounds, difficult targets for phase change materials, special structural forms, etc., and achieves high visible light transmittance. Affect and improve the effect of reactivity

Inactive Publication Date: 2020-05-01
江苏海獭新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (3) Phase change materials are difficult to combine with the target
[0011] In terms of optical camouflage, the current traditional bionic materials can only have the same color as plant leaves, while bionic materials that introduce suitable pigments and water into the materials can have the same color and spectrum as plant leaves. However, due to the complicated preparation process and special structural form, the its application in practice
In terms of infrared camouflage, conventional infrared camouflage technology is difficult to achieve all-day fusion of camouflaged targets and vegetation background

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In terms of parts by weight, weigh 20 parts of sodium tungstate, 16 parts of sodium sulfate, 10 parts of sulfuric acid with a mass fraction of 10%, and 60 parts of deionized water. Add sodium tungstate and sodium sulfate to deionized water. Stir at a speed of 160r / min for 12min to obtain a sodium salt solution, add sulfuric acid to the sodium salt solution, and stir and mix at a speed of 200r / min at room temperature for 1h to obtain a mixed acid solution. React under the conditions for 20 hours to obtain a reaction solution, cool the reaction solution at room temperature, place it in a centrifuge at a speed of 3500r / min and centrifuge for 15min, remove the lower layer of solid, wash it with absolute ethanol three times, and then wash it once with deionized water. Dry in an oven at 60°C for 40 minutes, cool at room temperature to obtain solid powder, place the solid powder in a tubular atmosphere furnace, calcinate for 1 hour under the conditions of 95% nitrogen, 5% hydro...

Embodiment 2

[0044] In terms of parts by weight, weigh 25 parts of sodium tungstate, 20 parts of sodium sulfate, 15 parts of sulfuric acid with a mass fraction of 10%, and 75 parts of deionized water. Add sodium tungstate and sodium sulfate to deionized water. Stir at a speed of 170r / min for 14min to obtain a sodium salt solution, add sulfuric acid to the sodium salt solution, and stir and mix at a speed of 220r / min at room temperature for 1h to obtain a mixed acid solution, put the mixed acid solution in a reaction kettle, and heat it at 210°C React under the conditions for 22 hours to obtain a reaction solution, cool the reaction solution at room temperature, place it in a centrifuge at a speed of 3750r / min and centrifuge for 18 minutes, remove the solid in the lower layer, wash it with absolute ethanol for 4 times, and then wash it with deionized water for 2 times. Dry in an oven at 70°C for 50 minutes, cool at room temperature to obtain solid powder, place the solid powder in a tubular ...

Embodiment 3

[0046] In terms of parts by weight, weigh 30 parts of sodium tungstate, 24 parts of sodium sulfate, 20 parts of sulfuric acid with a mass fraction of 10%, and 90 parts of deionized water, add sodium tungstate and sodium sulfate to deionized water, and Stir at a speed of 180r / min for 16min to obtain a sodium salt solution, add sulfuric acid to the sodium salt solution, and stir and mix at a speed of 240r / min for 2 hours at room temperature to obtain a mixed acid solution. React under the conditions for 24 hours to obtain a reaction solution, cool the reaction solution at room temperature, place it in a centrifuge and centrifuge at a speed of 4000r / min for 20 minutes, remove the solid in the lower layer, wash 5 times with absolute ethanol, and then wash 3 times with deionized water. Dry in an oven at 80°C for 60 minutes, cool at room temperature to obtain solid powder, place the solid powder in a tubular atmosphere furnace, calcinate for 2 hours under the conditions of 95% nitrog...

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Abstract

The invention relates to a preparation method of a vegetation background bionic composite membrane material, and belongs to the technical field of bionic materials. By using sodium tungstate and sodium sulfate as raw materials, a sodium tungsten bronze infrared shielding agent for preparing a vegetation background bionic composite membrane material can be obtained. Sodium tungsten bronze is a special metal oxide. Due to the tunnel structure and the special valence state, the material has excellent properties such as electrochromism and photochromism; with the sodium tungsten bronze as a selective light-transmitting material, a localized surface plasma resonance effect and a small polaron absorption mechanism between incident light and free electrons on the surface of the material are utilized; the material has excellent shielding capability in the whole infrared region while achieving high visible light transmittance. The material has the advantages of high reserves, low price, environmental protection and the like, is not easy to release sodium ions in the sodium tungsten bronze, is beneficial to improving the structural stability, has high ionization degree, provides a large number of free electrons, and is beneficial to improving the infrared shielding performance.

Description

technical field [0001] The invention relates to a preparation method of a vegetation background bionic composite membrane material, belonging to the technical field of bionic materials. Background technique [0002] Hyperspectral imaging can distinguish subtle differences in the reflective spectral features of the target and the background, and has become an important detection method. At the same time, infrared detection technology is also developing rapidly. At present, traditional camouflage materials are difficult to resist the above-mentioned detection techniques. [0003] Vegetation is one of the common backgrounds for camouflaging targets, and bionic materials developed based on vegetation characteristics can achieve the purpose of deceiving and confusing the enemy. In recent years, with the development and application of hyperspectral imaging technology, traditional camouflage materials that simply simulate the color of vegetation have become difficult to resist hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L3/02C08K13/06C08K9/10C08K5/00C08K3/24C08K5/053C08J5/18
CPCC08J5/18C08J2329/04C08J2403/02C08K3/24C08K5/0041C08K5/053C08K9/10C08K13/06
Inventor 石雅琴
Owner 江苏海獭新材料科技有限公司
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