Infrared microwave compatible stealth composite material based on helical polyyne and its preparation method

A composite material and infrared microwave technology, which is applied in chemical instruments and methods, and other chemical processes, can solve the problems of difficulty in achieving excellent infrared stealth performance, single pore structure of multi-walled carbon nanotubes, and difficulty in achieving broadband absorbing performance. Achieve the effect of realizing infrared microwave compatible stealth performance, realizing dielectric loss characteristics, increasing multiple reflection and scattering loss

Active Publication Date: 2022-03-08
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN106987024A provides a method for preparing an infrared-compatible microwave nanocomposite absorbing material, which is prepared by blending multi-walled carbon nanotubes with excellent electrical conductivity and optically active poly N-propargylamide polymers, although This method is simple to prepare and easy to operate, but the stability of the composite material prepared by the blending method is low, and the pore structure of the multi-walled carbon nanotubes is single, so it is difficult to achieve broadband microwave absorption performance
This material has obvious microwave absorption performance, but it is difficult to achieve excellent results for infrared stealth performance
At present, there are few reports on the use of gallium in the field of infrared microwave compatible stealth, which limits its application to a certain extent.

Method used

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  • Infrared microwave compatible stealth composite material based on helical polyyne and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023]145 mg of nickel nitrate hexahydrate and 255 mg of gallium nitrate hydrate were dissolved in a mixed solution of 32 mL of glycerin and 160 mL of isopropanol. Subsequently, the mixed solution was reacted at 180° C. for 6 h by a hydrothermal method, washed with ethanol, filtered, and vacuum-dried at 80° C. for 12 h to obtain nickel gallium glycerate. The nickel gallium glycerate was calcined at a temperature of 350° C. for 2 hours to obtain nickel gallium oxide nanomaterials. Stirring and dissolving 160 mg of nickel-gallium oxide nanomaterials in 200 mL of tris buffer solution, and then adding 40 mg of dopamine, stirred and reacted at room temperature for 6 h. After washing, filtering, and drying at 60° C. for 10 h, a polydopamine / nickel-gallium oxide nanomaterial with a core-shell structure is obtained;

[0024] Weigh 1.4g of cholic acid and dissolve it in 50mL of tetrahydrofuran, add 0.38mL of N-methylmorpholine and 0.43mL of isobutyl chloroformate at 0°C, and stir for ...

Embodiment 2

[0028] 87 mg of nickel nitrate hexahydrate and 153 mg of gallium nitrate hydrate were dissolved in a mixed solution of 20 mL of glycerin and 100 mL of isopropanol. Subsequently, the mixed solution was reacted at 160° C. for 10 h by a hydrothermal method, washed with ethanol, filtered, and vacuum-dried at 70° C. for 16 h to obtain nickel gallium glycerate. The nickel gallium glycerate was calcined at a temperature of 300° C. for 3 hours to obtain nickel gallium oxide nanomaterials. Stirring and dissolving 100 mg of nickel-gallium oxide nanomaterials in 120 mL of tris buffer solution, and then adding 25 mg of dopamine, stirred and reacted at room temperature for 7 h. After washing, filtering, and drying at 70°C for 12 hours, a polydopamine / nickel-gallium oxide nanomaterial with a core-shell structure is obtained;

[0029] Weigh 2.0g of ursodeoxycholic acid and dissolve it in 50mL of tetrahydrofuran, add 0.56mL of N-methylmorpholine and 0.65mL of isobutyl chloroformate at 0°C, a...

Embodiment 3

[0033] 116 mg of nickel nitrate hexahydrate and 255 mg of gallium nitrate hydrate were dissolved in a mixed solution of 26 mL of glycerin and 130 mL of isopropanol. Subsequently, the mixed solution was reacted at 150° C. for 12 h by a hydrothermal method, washed with ethanol, filtered, and vacuum-dried at 60° C. for 9 h to obtain nickel gallium glycerate. The nickel gallium glycerate was calcined at a temperature of 400° C. for 4 hours to obtain nickel gallium oxide nanomaterials. Stirring and dissolving 100 mg of nickel-gallium oxide nanomaterials in 125 mL of tris buffer solution, and then adding 25 mg of dopamine, stirred and reacted at room temperature for 8 h. After washing, filtering, and drying at 80° C. for 12 hours, a polydopamine / nickel-gallium oxide nanomaterial with a core-shell structure is obtained;

[0034] Weigh 1.6g of hyodeoxycholic acid and dissolve it in 50mL of tetrahydrofuran, add 0.45mL of N-methylmorpholine and 0.52mL of isobutyl chloroformate at 0°C, ...

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Abstract

The invention is an infrared microwave compatible stealth composite material based on helical polyyne and its preparation method. The composite material is composed of a propargyl amine monomer containing chiral cholic acid substituents in a core-shell conductive polymer / double metal nickel base The surface of oxide nanomaterials is in-situ polymerized into a composite of helical polyyne. The core-shell conductive polymer / double metal nickel-based oxide nanomaterial is composed of amine conductive polymer monomers on the surface of double metal nickel-based oxides. Self-polymerized, bimetallic nickel-based oxides are prepared from the third main group metal salt and nickel nitrate by hydrothermal reaction and high-temperature roasting, and the helix formed by in-situ polymerization of propargylamine monomers containing chiral cholic acid substituents The general structural formula of the polyyne is: the degree of polymerization n is 500-3000; the thermal decomposition temperature of the polyyne is 200°C-450°C, and the absolute value of the specific optical rotation at room temperature is 5°-70°.

Description

technical field [0001] The invention relates to an infrared / microwave compatible stealth composite material based on helical polyyne and a preparation method thereof, belonging to the preparation category of organic-inorganic nanometer composite materials. It can be used in radar and infrared compatible stealth materials and other fields. Background technique [0002] The guidance system with radar and infrared detection technology as the core has become an important guidance mode for precision guided weapons. Correspondingly, radar and infrared countermeasures have also become an important support for the battlefield penetration and survivability of advanced fighters, fighters, missiles and other weapon systems. . The way to achieve radar and infrared countermeasure technology is: by reducing the infrared emissivity of the protected target, the infrared radiation state of the target in the detected direction is close to the background radiation level, so as to achieve the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00
CPCC09K3/00
Inventor 周钰明吴文婷卜小海何曼张一卫王泳娟黄镜怡徐然张泽武杨晓明
Owner SOUTHEAST UNIV
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