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Nano-graphite alkenyl composite wave-absorbing material and method of preparing the same

A composite wave absorbing material and nano-graphene technology, which is applied in the field of wave absorbing materials and their preparation, can solve the problems of narrow interference band and high density, and achieve a wide electromagnetic attenuation band, low density, and excellent broadband wave absorbing performance. Effect

Inactive Publication Date: 2009-10-07
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are various types of existing absorbing materials, but most of them have the disadvantages of narrow interference frequency band and high density.

Method used

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  • Nano-graphite alkenyl composite wave-absorbing material and method of preparing the same
  • Nano-graphite alkenyl composite wave-absorbing material and method of preparing the same
  • Nano-graphite alkenyl composite wave-absorbing material and method of preparing the same

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Effect test

Embodiment 1

[0031] Prepare the following 500ml electroplating solution with deionized water: NiSO 4 ·7H 2 O 200g.L -1 、NiCl 2 ·6H 2 O 20g.L -1 、KBr 1g.L -1 , MgSO 4 5g.L -1 、H 3 BO 3 30g.L -1 , Sodium allyl sulfonate 1.0g.L -1 . Adjust the pH of the plating solution to 5.

[0032] Weigh 1 g of graphene, adjust it into a slurry with 150 ml of electroplating solution, and disperse it ultrasonically for 30 minutes. The electroplating tank adopts an electroplating tank with the anode part and the cathode part separated. The graphene slurry is put into the anode part of the electroplating tank, and the remaining electroplating solution is poured into the cathode part of the electroplating tank. The anode is a nickel plate and the cathode collector is a carbon rod. . Turn on the upstream circulation stirring pump of the electroplating tank, start electroplating, the current density of electroplating is 5A·dm -2 , the electroplating time is 1 hour, and the electroplating temperat...

Embodiment 2

[0034] Prepare the following 500ml electroplating solution with deionized water: NiSO 4 ·7H 2 O 200g.L -1 、NiCl 2 ·6H 2 O 20g.L -1 、KBr 1g.L -1 , MgSO 4 5g.L -1 、H 3 BO 3 30g.L -1 , Sodium allyl sulfonate 1.0g.L -1 . Adjust the pH of the plating solution to 5.

[0035] Weigh 1 g of graphene, adjust it into a slurry with 150 ml of electroplating solution, and disperse it ultrasonically for 30 minutes. The electroplating tank adopts an electroplating tank with the anode part and the cathode part separated. The graphene slurry is put into the anode part of the electroplating tank, and the remaining electroplating solution is poured into the cathode part of the electroplating tank. The anode is a nickel plate and the cathode collector is a carbon rod. . Turn on the upstream circulation stirring pump of the electroplating tank, start electroplating, the current density of electroplating is 5A·dm -2, the electroplating time is 12 hours, and the electroplating temper...

Embodiment 3

[0037] Prepare the following 500ml electroplating solution with deionized water: NiSO 4 ·7H 2 O 400g.L -1 、NiCl 2 ·6H 2 O 20g.L -1 、KBr 1g.L -1 , MgSO 4 5g.L -1 、H 3 BO 3 30g.L -1 , Sodium allyl sulfonate 0.5g.L -1 . Adjust the pH of the plating solution to 5.

[0038] Weigh 1 g of graphene, adjust it into a slurry with 150 ml of electroplating solution, and disperse it ultrasonically for 30 minutes. The electroplating tank adopts an electroplating tank with the anode part and the cathode part separated. The graphene slurry is put into the anode part of the electroplating tank, and the remaining electroplating solution is poured into the cathode part of the electroplating tank. The anode is a nickel plate, and the cathode collector is a carbon rod. . Turn on the upstream circulation stirring pump of the electroplating tank, start electroplating, the current density of electroplating is 10A·dm -2 , the electroplating time is 15 hours, and the electroplating tem...

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Abstract

The present invention provides a nano-graphite alkenyl composite wave-absorbing material and method of preparing the same. The wave-absorbing material includes graphite alkenyl and nanoparticle deposition material which is metal or metallic oxide; the weight percentage of the graphite alkenyl is 15-95%, the weight percentage of the nanoparticle deposition material is 5-85%, the metal or metallic oxide nanoparticle is deposited on the graphite alkenyl surface and between the layers, prepared by the metal salt and graphite alkenyl in the electrodeposition pattern. The nano-graphite alkenyl composite wave-absorbing material is provided with stable capability, thin thickness, low density, corrosion resistant, simple manufacture, good wave-absorbing capability and favourable application foreground.

Description

technical field [0001] The invention relates to a wave-absorbing material and a preparation method thereof, in particular to a nanographene-based composite wave-absorbing material and a preparation method thereof. Background technique [0002] With the rapid development of electronic technology, TV broadcasting communication, microwave anechoic chamber, radar guidance and other technologies have been popularized and applied. As one of the effective means of reducing electromagnetic radiation, the new wave-absorbing material has become a research hotspot in recent years. Absorbing materials with good performance have great practical value for both military and civilian use. [0003] At present, the materials used for microwave absorption mainly include carbon-based wave absorbers, metal and their oxide-based wave absorbers, ceramic wave absorbers, and conductive polymer wave absorbers. Carbon absorbers include carbon black, conductive graphite, carbon nanotubes, carbon fiber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/52C04B35/628
Inventor 李素芳陈宗璋
Owner HUNAN UNIV
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