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A kind of preparation method of multi-layer structure wave absorbing agent

A multi-layer structure and wave absorbing agent technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problem of narrow wave absorption frequency band, achieve the effect of wide absorption frequency band, broaden absorption frequency band width, and high electromagnetic wave loss capability

Inactive Publication Date: 2018-06-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that the existing wave-absorbing material has a narrow wave-absorbing frequency band, and provides a method for preparing a wave-absorbing agent with a similar multi-layer structure

Method used

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  • A kind of preparation method of multi-layer structure wave absorbing agent
  • A kind of preparation method of multi-layer structure wave absorbing agent
  • A kind of preparation method of multi-layer structure wave absorbing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0025] Embodiment 1: A preparation method of a wave absorbing agent with a similar multi-layer structure is carried out according to the following steps.

[0026] 1. Preparation of hollow porous activated carbon fiber-carbon nanotube dielectric loss layer absorber: use polypropylene nitrile-based hollow porous carbon fiber as the matrix, and use electroplating to load nano-Ni catalyst particles on its surface. The electroplating time is 1s, and then Wash several times with distilled water and dry. Carbon nanotubes are grown on the surface by chemical vapor deposition.

[0027] 2. Preparation of polyacrylonitrile-based hollow porous carbon fiber-carbon nanotube-nano ferroferric oxide magnetic particles / epoxy resin wave absorbing agent: epoxy diluent phenyl glycidyl ether 2.9g, curing agent low molecular weight polyamide 1.54 g, 0.13g of antifoaming agent polyoxyethylene polyoxypropylene glyceryl ether (the material should be specified in the embodiment) and 0.43g of epoxy resi...

Embodiment ２

[0032] Embodiment 2: A preparation method of a wave absorbing agent with a similar multi-layer structure is carried out according to the following steps.

[0033] 1. Preparation of absorbing agent for hollow porous activated carbon fiber-carbon nanotube dielectric loss layer: with polypropylene nitrile-based hollow porous carbon fiber as the substrate, nano-Nio catalyst particles are loaded on the surface by electroplating. The electroplating time is 10 minutes, and then Wash several times with distilled water and dry. Carbon nanotubes are grown on the surface by chemical vapor deposition.

[0034]2. Preparation of polyacrylonitrile-based hollow porous carbon fiber-carbon nanotube-nano-nickel magnetic particle absorber: 0.5g of epoxy diluent 1,4-butanediol diglycidyl ether, 0.5g of curing agent, and defoamer Mix 0.053g of polyoxyethylene polyoxypropylene pentaerythritol ether and 3.95g of epoxy resin (E-54) to prepare 5g of epoxy resin solution, add 2g of nano-nickel magnetic...

Embodiment ３

[0038] Embodiment 3: A preparation method of a wave absorbing agent with a similar multi-layer structure is carried out according to the following steps.

[0039] 1. Preparation of hollow porous activated carbon fiber-carbon nanotube dielectric loss layer absorber: use polypropylene-based carbon fiber as the matrix, and carry nano-Fe catalyst particles on its surface by electroplating. The electroplating time is 1min, and then washed with distilled water Several times, dry. Carbon nanotubes are grown on the surface by chemical vapor deposition.

[0040] 2. Preparation of polypropylene-based carbon fiber-carbon nanotube-nanocobalt magnetic particle absorber: 3.9 g of epoxy diluent polypropylene glycol diglycidyl ether, 0.75 g of modified amine curing agent, and defoaming agent polyoxyethylene Mix 0.25g of oxypropyleneamine ether and 0.1g of epoxy resin (E-54) to prepare 5g of epoxy resin solution, add 1g of nano-cobalt magnetic particles to 5g of epoxy resin solution, stir mec...

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Abstract

The invention relates to a preparing method of a wave-absorbing agent of a similar multilayer structure, and relates to a preparing method of a hollow porous carbon fiber-carbon nano tube-nano magnetic particle wave-absorbing agent. The hollow porous carbon fiber-carbon nano tube structure is used as a skeleton, and nano magnetic particles are added into the hollow inside of the hollow porous carbon fiber-carbon nano tube structure and solidified with an epoxy resin solution to obtain the wave-absorbing agent of the similar multilayer structure. The prepared wave-absorbing agent of the similar multilayer structure has good electrical loss and magnetic loss functions on electromagnetic waves, the effective wave-absorbing frequency bandwidth of the wave-absorbing agent can be greatly broadened by means of the special similar multilayer structure, and the wave-absorbing agent has the wideband performance characteristic of a multilayer wave-absorbing composite material, which is beneficial for application of the high-performance wave-absorbing material in the wave-absorbing material field. The prepared hollow carbon fiber is of micron order, and the carbon nano tube / nano magnetic particles are of nano order. The preparing method is used for preparing the micron / nano composite electromagnetic wave absorbing material.

Description

technical field [0001] The invention relates to a preparation method of a wave absorbing agent with a similar multi-layer structure. Background technique [0002] The preparation method of multi-layer structure wave absorbing agent prepared by carbon nanotube-hollow porous carbon fiber and nano-magnetic particles has not been reported at home and abroad. The research background of the present invention will be introduced below. [0003] In today's weapon warfare, the use of stealth technology can break the existing strategic layout, and the combat capability of weapons and equipment will also be significantly improved. Radar stealth technology is the earliest research, the fastest development, and the most widely used stealth technology. Commonly used ways to improve stealth technology are: (a) modifying the shape of weapons; (b) using radar absorbing materials. Because the preparation of wave-absorbing materials is less difficult and less costly, it has become a hot resea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08L71/02C08K7/24C08K7/06C08K3/08C08K3/22C09K3/00
CPCC08K2201/01C08K2201/011C08L63/00C08L2205/025C08L2205/03C09K3/00C08L71/02C08K7/24C08K7/06C08K2003/0862C08K2003/2275C08K2003/0843
Inventor 邱军吴相宜高雪华
Owner TONGJI UNIV
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