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Explosion-proof broadband wave absorption composite material and preparation method thereof

A composite material and wave absorbing material technology, applied in the field of multifunctional materials, can solve the problems of inability to achieve explosion-proof, broadband wave absorption, no explosion-proof performance, and no consideration of broadband wave-absorbing performance at the same time, and achieve excellent explosion-proof characteristics, dielectric Low constant, the effect of overcoming technical barriers that are difficult to combine

Active Publication Date: 2018-05-18
AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing broadband absorbing composite materials basically have no explosion-proof performance, and professional explosion-proof materials do not take broadband absorbing performance into consideration, and these composite materials cannot simultaneously realize the dual functions of explosion-proof and broadband absorbing

Method used

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  • Explosion-proof broadband wave absorption composite material and preparation method thereof
  • Explosion-proof broadband wave absorption composite material and preparation method thereof
  • Explosion-proof broadband wave absorption composite material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0026] The preparation method of this explosion-proof broadband wave-absorbing composite material includes:

[0027] Step S1: Prepare an explosion-proof skin by using quartz fiber and unsaturated resin.

[0028] The explosion-proof skin is the surface layer of composite materials, which has the function of explosion-proof in structure, and has the characteristic of transmitting electromagnetic waves in terms of wave-absorbing function.

[0029] At present, the most widely used explosion-proof materials are para-aramid fiber (P-ARF), ultra-high molecular weight polyethylene (UHMWPE), high-strength quartz fiber, and more expensive polyparaphenylene benzodiene Oxazole (PBO) and pyridine aramid fiber (M-5), etc., can only be used in special fields.

[0030] Preparation method of explosion-proof skin: cut para-aramid fiber (P-ARF), high-strength quartz fiber and ultra-high relative molecular weight polyethylene according to specifications, apply unsaturated resin between explosion...

Embodiment 1

[0054] This embodiment provides an explosion-proof broadband wave-absorbing composite material, which has a layered structure and includes sequentially contacting reflective substrates, broadband interlayer wave-absorbing materials and explosion-proof skins.

[0055] The process of its preparation method is as follows figure 2 shown, including:

[0056] 1). Preparation of explosion-proof skin:

[0057] 2). Preparation of broadband interlayer absorbing material:

[0058] a. Using chopped carbon fiber as a wave absorbing agent, put the chopped carbon fiber into a crucible, put it into a high-temperature curing furnace, and heat it at 400°C for 4 hours. Take out the chopped carbon fiber and soak it in concentrated sulfuric acid for 1 hour, remove the concentrated sulfuric acid and wash it with acetone for 3 times, and put the cleaned chopped carbon fiber on filter paper to dry naturally for 24 hours.

[0059] b. Prepare tetrahydrofuran, acetone and epoxy film in a mass ratio ...

Embodiment 2

[0067] This embodiment provides an explosion-proof broadband wave-absorbing composite material, which has a layered structure and includes sequentially contacting reflective substrates, broadband interlayer wave-absorbing materials and explosion-proof skins.

[0068] Its preparation method is consistent with embodiment 1 basically, and difference is:

[0069] 2). Preparation of broadband interlayer absorbing material:

[0070] a. Using carbon nanotubes as a wave absorbing agent, put the carbon nanotubes into a crucible, put them into a high-temperature curing furnace, and heat at 500° C. for 3 hours. The carbon nanotubes were taken out and soaked in concentrated sulfuric acid for 0.5 hours, the concentrated sulfuric acid was removed and washed with acetone for 3 times, and the cleaned carbon nanotubes were placed on filter paper to dry naturally for 24 hours.

[0071] b. Prepare tetrahydrofuran, acetone and epoxy film in a mass ratio of 1.2:1.2:1 to form a glue solution, and ...

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Abstract

The invention provides an explosion-proof broadband wave absorption composite material and a preparation method thereof, and belongs to the technical field of multifunctional materials. The preparation method of the explosion-proof broadband wave absorption composite material comprises the following steps: preparing explosion-proof skin by utilizing quartz fiber and unsaturated resin, preparing anelectrical loss wave absorption piece, preparing a magnetic loss wave absorption piece, preparing a broadband interlayer wave absorption material, and sequentially adhering the broadband interlayer wave absorption material and the explosion-proof skin to a reflecting base plate. The explosion-proof broadband wave absorption composite material prepared by the invention is of a laminated structure,and comprises the reflecting base plate, the broadband interlayer wave absorption material and the explosion-proof skin which are in contact in sequence. According to the preparation method providedby the invention, the technical obstacle that a wave absorption material and an explosion-proof material are difficult in combination is overcome, and the preparation method is simple and is easy in industrial implementation; the prepared explosion-proof broadband wave absorption composite material simultaneously has an explosion-proof function and a broadband wave absorption function and has thecharacteristics of good low-frequency performance, broad absorption band, low surface density and excellent environment performance, the explosion-proof function of a product is solved, and the broadband wave absorption function is also integrated.

Description

technical field [0001] The invention relates to the technical field of multifunctional materials, in particular to an explosion-proof broadband wave-absorbing composite material and a preparation method thereof. Background technique [0002] With the increasing demand for military and civilian electromagnetic absorbing materials, various electromagnetic wave absorbing materials have been widely studied and used. Most of the current development of absorbing materials is considered from a single absorbing aspect, and less consideration is given to other structural functions, which limits its application prospects in certain fields. [0003] The invention patent (201510607620.6) provides a honeycomb high-temperature resistant wave-absorbing structure material, which consists of a silicon rubber wave-absorbing layer, an aluminum alloy honeycomb structure layer and an isocyanate composite material layer. The aluminum alloy honeycomb structure layer has a first wave-absorbing coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/00B32B37/06B32B9/00B32B9/04B32B27/38B32B27/06B32B33/00B32B27/30B32B27/32B32B27/28B32B27/08C08J9/36C09D163/00C09D7/61C08L33/24C08L27/06C08L23/12
CPCB32B5/02B32B27/06B32B27/08B32B27/281B32B27/304B32B27/32B32B27/38B32B33/00B32B37/0038B32B37/06B32B2255/02B32B2255/20B32B2255/205B32B2255/26C08J9/365C08J2323/12C08J2327/06C08J2333/24C08J2463/00C09D163/00
Inventor 谢云王绪超
Owner AEROSPACE SCI & IND WUHAN MAGNETISM ELECTRON
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