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A graphene-like carbon nitride/ferric oxide/polyaniline nanocomposite wave-absorbing material and preparation method thereof

A technology of triiron tetroxide and ethylene carbon nitride, which is applied in the field of graphene-like carbon nitride/ferric oxide/polyaniline nanocomposite wave-absorbing materials and its preparation, can solve the problems of particle agglomeration, harsh preparation process, and packaging In order to avoid problems such as poor coating effect, achieve the effect of good dielectric properties, good dispersion and low density

Active Publication Date: 2020-08-14
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Synthetic g-C 3 N 4 / Fe 3 o 4 There are many methods, but they are more common in hydrothermal method and ultrasonic method, and there are Fe 3 o 4 Disadvantages such as particle agglomeration, poor coating effect and harsh preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of graphene-like carbon nitride / ferric oxide / polyaniline nanocomposite absorbing material

[0031] (1) Take 20 mg of urea and place it in a crucible, and bake it in an oven at 80°C for 12 hours. The above urea together with the crucible was covered with a lid, placed in a muffle furnace, and reacted under static air at 500°C for 5 hours. After the reaction was finished, the product was cooled naturally, and the product was washed three times with distilled water and absolute ethanol respectively. The product was dried at 60°C for 12h to obtain light yellow g-C 3 N 4 nanomaterials.

[0032] (2) Take 80mg of prepared g-C 3 N 4Add it to 75mL TREG solution, and sonicate for 0.5-1h to obtain a homogeneous light yellow suspension. Then take 600mg Fe(acac) 3 Add to the above suspension, stir for 15 minutes, and ultrasonic bath for 1-2 hours to obtain a homogeneous red suspension.

[0033] (3) The prepared suspension was heated at 3°C·min under the protectio...

Embodiment 2

[0036] Preparation of graphene-like carbon nitride / ferric oxide / polyaniline nanocomposite absorbing material

[0037] (1) Take 20 mg of urea and place it in a crucible, and bake it in an oven at 80°C for 12 hours. The above urea together with the crucible was covered with a lid, placed in a muffle furnace, and reacted under static air at 600°C for 2.5h. After the reaction was finished, the product was cooled naturally, and the product was washed three times with distilled water and absolute ethanol respectively. The product was dried at 60°C for 12h to obtain light yellow g-C 3 N 4 nanomaterials.

[0038] (2) Take 80mg of prepared g-C 3 N 4 Add it to 75mL TREG solution, and sonicate for 0.5-1h to obtain a homogeneous light yellow suspension. Then take 600mg Fe(acac) 3 Add to the above suspension, stir for 15 minutes, and ultrasonic bath for 1-2 hours to obtain a homogeneous red suspension.

[0039] (3) The prepared suspension was heated at 3°C·min under the protection ...

Embodiment 3

[0042] Preparation of graphene-like carbon nitride / ferric oxide / polyaniline nanocomposite absorbing material

[0043] (1) Take 20 mg of urea and place it in a crucible, and bake it in an oven at 80°C for 12 hours. The above urea together with the crucible was covered with a lid, placed in a muffle furnace, and reacted under static air at 550°C for 2.5h. After the reaction was finished, the product was cooled naturally, and the product was washed three times with distilled water and absolute ethanol respectively. The product was dried at 60°C for 12h to obtain light yellow g-C 3 N 4 nanomaterials.

[0044] (2) Take 80mg of prepared g-C 3 N 4 Add it to 75mL TREG solution, and sonicate for 0.5-1h to obtain a homogeneous light yellow suspension. Then take 600mg Fe(acac) 3 Add to the above suspension, stir for 15 minutes, and ultrasonic bath for 1-2 hours to obtain a homogeneous red suspension.

[0045] (3) The prepared suspension was heated at 3°C·min under the protection ...

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Abstract

The invention belongs to the field of preparation of organic and inorganic nano composite materials, and particularly relates to a graphene-like carbon nitride / ferroferric oxide / polyaniline nano composite wave-absorbing material and a preparation method thereof. According to the nano composite wave-absorbing material, multi-pore graphene-like carbon nitride is used as a carrier, and magnetic nanoparticle ferroferric oxide and conductive polymer polyaniline are used as covering layers. The preparation method comprises the following steps: performing heating reflux on g-C3N4 used as a carbon source and Fe(acac)3 used as an iron source through a polyol method to obtain g-C3N4 / Fe3O4, adding an initiator to enable an aniline monomer to be polymerized, and preparing the g-C3N4 / Fe3O4 / PANI nano composite wave-absorbing material. The material is provided with uniform covering layers and is high in dispersibility and mangnetic responsiveness and excellent in wave-absorbing performance. The material and 50 weight percent of paraffin are uniformly mixed and then are pressed to prepare a sample. When the thickness of the sample is 2 to 4 mm, the maximum peak value (RLmin) of reflection loss isup to -50 dB; by adjusting the thickness of the nano composite wave-absorbing material and paraffin mixed material, the effective absorption broadband (RLmin less than -10dB) may be up to 7 GHz.

Description

technical field [0001] The invention belongs to the preparation category of organic-inorganic nanocomposite materials, can be used in the field of wave-absorbing material preparation, and particularly relates to a graphene-like carbon nitride / ferric oxide / polyaniline (g-C 3 N 4 / Fe 3 o 4 / PANI) nanocomposite wave-absorbing material and its preparation method. Background technique [0002] In recent years, the rapid development and widespread use of electromagnetic technology has created a huge material civilization for human beings, and at the same time brought human beings into a living environment full of electromagnetic radiation. These electromagnetic radiations not only have a serious impact on the normal life of human beings, such as harming the immune, reproductive, circulatory and metabolic functions of the human body, inducing cancer and other disadvantages, but also the electromagnetic radiation produced by military electronic equipment may cause electromagnetic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/02C08K3/28C08K3/22
CPCC08K3/22C08K3/28C08K2003/2275C08K2201/01C08L2201/04C08L79/02
Inventor 何曼周钰明黄庭远仝远廖强王瑞丽
Owner SOUTHEAST UNIV
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