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Wave-absorbing composite foam and preparation method thereof

A composite foam and wave-type technology, applied in the field of wave-absorbing materials, can solve the problems of high price and achieve the effect of broad application prospects

Active Publication Date: 2020-01-17
GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, PMI foam is used as a wave-absorbing structural material on the wings of drones, but it is mainly imported from Germany, and the price is relatively expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A wave-absorbing composite foam, which includes a glass fiber reinforced plastic layer, a wave-absorbing layer, and a carbon fiber cloth reflective layer from the outside to the inside of the electromagnetic wave incident surface, each of which is provided between the glass fiber reinforced plastic layer and the wave-absorbing layer, and between the wave-absorbing layer and the carbon fiber cloth reflective layer Adhesive layer; Wherein, absorbing layer is obtained by following preparation steps:

[0027] (1) Place a layer of glass fiber cloth on a flat surface;

[0028] (2) Use liquid electrostatic spraying equipment to spray the mixture of liquid thermosetting resin and curing agent on the surface of the glass fiber cloth to obtain a thermosetting resin layer;

[0029] (3) Using the method of electrostatic flocking to implant carbon nanotubes vertically and orientedly on the basis of step (2);

[0030] (4), using powder electrostatic spraying equipment to spray a lay...

Embodiment 2

[0037] A wave-absorbing composite foam, which includes a glass fiber reinforced plastic layer, a wave-absorbing layer, and a carbon fiber cloth reflective layer from the outside to the inside of the electromagnetic wave incident surface, each of which is provided between the glass fiber reinforced plastic layer and the wave-absorbing layer, and between the wave-absorbing layer and the carbon fiber cloth reflective layer Adhesive layer; Wherein, absorbing layer is obtained by following preparation steps:

[0038] (1) Place a layer of glass fiber cloth on a flat surface;

[0039] (2) Use liquid electrostatic spraying equipment to spray the mixture of liquid thermosetting resin and curing agent on the surface of the glass fiber cloth to obtain a thermosetting resin layer;

[0040] (3) Using the method of electrostatic flocking to implant carbon nanotubes vertically and orientedly on the basis of step (2);

[0041] (4), using powder electrostatic spraying equipment to spray a lay...

Embodiment 3

[0048] A wave-absorbing composite foam, which includes a glass fiber reinforced plastic layer, a wave-absorbing layer, and a carbon fiber cloth reflective layer from the outside to the inside of the electromagnetic wave incident surface, each of which is provided between the glass fiber reinforced plastic layer and the wave-absorbing layer, and between the wave-absorbing layer and the carbon fiber cloth reflective layer Adhesive layer; Wherein, absorbing layer is obtained by following preparation steps:

[0049] (1) Place a layer of glass fiber cloth on a flat surface;

[0050] (2) Use liquid electrostatic spraying equipment to spray the mixture of liquid thermosetting resin and curing agent on the surface of the glass fiber cloth to obtain a thermosetting resin layer;

[0051] (3) Using the method of electrostatic flocking to implant carbon nanotubes vertically and orientedly on the basis of step (2);

[0052] (4), using powder electrostatic spraying equipment to spray a lay...

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Abstract

The invention belongs to the technical field of wave-absorbing materials, and discloses wave-absorbing composite foam and a preparation method thereof. An electromagnetic wave incoming surface comprises a glass fiber reinforced plastic layer, a wave-absorbing layer and a carbon fiber cloth reflecting layer sequentially from outside to inside, and an adhesive layer is arranged between the layers, wherein the wave-absorbing layer is obtained by (1) laying a layer of glass fiber cloth flatly; (2) applying a mixture of liquid thermosetting resin and curing agent onto the surface of the glass fibercloth by liquid electrostatic spraying; (3) vertically and directionally implanting a carbon wave-absorbing material on the basis of the step (2) by adopting an electrostatic flocking method; (4) forming a layer of hollow glass microspheres by powder electrostatic spraying; (5) continuously spraying a mixture of liquid thermosetting resin and curing agent; and (6) stacking a layer of glass fibercloth again on the basis of the step (5) to obtain the wave-absorbing layer. The wave-absorbing composite foam structure obtained herein allows weaponry to be efficiently invisible.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing materials, and in particular relates to a wave-absorbing composite foam and a preparation method thereof. Background technique [0002] Absorbing materials were first used in the military field, known as stealth materials, and their purpose is to minimize the detectability of targets within a certain range of remote sensing detection. In modern warfare, in order to improve the survivability and combat effectiveness of weapons and achieve pre-emptive control of the enemy, the stealth technology of weapons and equipment must be improved. Therefore, radar absorbing materials, as a kind of stealth technology, have become one of the key items of military research in various countries. [0003] With the rapid development of electronic technology, electromagnetic wave radiation pollution is increasingly affecting and threatening people's working and living environment. The first wave-absorbing mat...

Claims

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Application Information

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IPC IPC(8): D06N3/00D06N7/00B05D1/04B05D1/06B05D7/24B32B9/00B32B5/02B32B5/26B32B9/04B32B17/02B32B17/06B32B17/12B32B17/10B32B27/06B32B7/12B32B33/00B32B37/12B32B37/06
CPCD06N3/0022D06N3/0088D06N7/0097B05D1/06B05D1/04B05D7/24B32B27/12B32B5/02B32B5/26B32B7/12B32B33/00B32B37/1284B32B37/06B32B2262/101B32B2262/106B32B2307/212B32B2307/50
Inventor 姚栋嘉吕多军吴恒张东生刘喜宗杨超董会娜杨红霞
Owner GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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