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A kind of chiral poly-Schiff base cobalt salt composite wave-absorbing material

A composite wave-absorbing material, Schiff base cobalt salt technology, applied in the field of wave-absorbing materials, to achieve stable performance, strong wave-absorbing performance, and prevent volatilization

Active Publication Date: 2021-01-26
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] "A ferrocene-based chiral poly-Schiff base salt / graphene composite wave-absorbing material" (CN201510482592.X), "a ferrocene-based chiral poly-Schiff base salt / graphene" authorized by the applicant Composite absorbing material" (CN201510466074.9) two patents, compared with other composite absorbing materials, the prepared composite absorbing material has strong absorbing performance, absorbing frequency bandwidth, density, thickness and performance stability, etc. There are major improvements, but there is still room for improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Dissolve 0.04 mol of ferrocene formaldehyde in 80 ml of methanol, and raise the temperature to 45° C. under reflux to obtain a ferrocene formaldehyde methanol solution.

[0026] (2) Dissolve 0.02mol of chiral (R,R)-1,2-diphenylethylenediamine in 40ml of methanol, and then dissolve chiral (R,R)-1,2-diphenylethylenediamine The methanol solution was slowly dropped into the ferrocene formaldehyde methanol solution. After the drop was completed within 25 minutes, the solution was stirred and refluxed under nitrogen protection at 45°C for 6 hours to obtain solution A.

[0027] (3) The solution A was filtered, and the resulting filter cake was vacuum-dried at 35° C. for 24 hours to obtain a chiral ferrocenyl bis-Schiff base.

[0028] (4) Dissolve 0.1 mol of aluminum trichloride in 60 ml of chloroform, and drop into 12 ml of chloroform solution containing 0.01 mol of sebacoyl chloride to obtain solution B.

[0029] (5) Dissolve 0.01mol of chiral ferrocenyl bis-Schiff base ...

Embodiment 2

[0038] (1) Dissolve 0.06 mol of ferrocene formaldehyde in 60 ml of methanol, and raise the temperature to 45° C. under reflux to obtain a methanol solution of ferrocene formaldehyde.

[0039] (2) Dissolve 0.03mol of chiral (R)-(+)-2,2-diamino-1,1-binaphthyl in 30ml of methanol, and then dissolve chiral (R)-(+)-2,2 -Diamino-1,1-binaphthyl methanol solution was slowly dropped into the ferrocene formaldehyde methanol solution. After the drop was completed within 25 minutes, the mixture was stirred and refluxed under nitrogen protection at 45°C for 6 hours to obtain solution A.

[0040] (3) The solution A was filtered, and the resulting filter cake was vacuum-dried at 35° C. for 24 hours to obtain a chiral ferrocenyl bis-Schiff base.

[0041] (4) Dissolve 0.2 mol of aluminum trichloride in 120 ml of chloroform, and drop into 20 ml of chloroform solution containing 0.02 mol of sebacoyl chloride to obtain solution B.

[0042] (5) Dissolve 0.02mol of chiral ferrocenyl bis-Schiff bas...

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Abstract

The invention discloses a chiral poly-Schiff base cobalt salt composite wave-absorbing material, which is prepared by firstly preparing the chiral poly-Schiff base cobalt salt by a solvothermal method, then compounding with graphene, and finally adding paraffin matrix. The mass ratio of chiral poly-Schiff base cobalt salt to the entire composite material is 7.5-8.57:10, the mass ratio of graphene to the entire composite material is 1.43-2.5:10, and the mass ratio of paraffin matrix to the entire composite material The ratio is 7:10. The preparation process of the invention is simple, and the chiral poly-Schiff base cobalt salt composite wave-absorbing material has low density, strong wave-absorbing performance and wide wave-absorbing frequency, and has broad application prospects in the aspects of stealth, anti-electromagnetic radiation, electromagnetic shielding and the like.

Description

technical field [0001] The invention relates to a chiral poly-Schiff base cobalt salt composite wave-absorbing material, which relates to an electromagnetic wave composite wave-absorbing material, in particular to a radar stealth composite material, and specifically belongs to the technical field of wave-absorbing materials. Background technique [0002] Absorbing material refers to a type of material that can absorb electromagnetic waves projected onto its surface and convert the energy of electromagnetic waves into electrical energy or other forms of energy through the unique properties of the material. The absorbing material generally has a high absorption rate per unit thickness and light weight. Frequency bandwidth and stable performance in the environment in which it is used. Commonly used absorbing materials mainly include: ferrite, conductive polymer, carbon black, polycrystalline iron fiber, etc. At present, traditional stealth coatings at home and abroad still foc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L91/06C08L79/04C08K3/04C08G73/06C09K3/00
CPCC08G73/0644C08G73/065C08L91/06C09K3/00C08L79/04C08K3/04
Inventor 王靳一然刘崇波张祥李琳吴铭魏鑫唐维露
Owner NANCHANG HANGKONG UNIVERSITY
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