A stealth and anti-destruction shielding material and its preparation method

A technology of shielding material and wave absorbing material is applied in the field of stealth and anti-destruction shielding material and its preparation, which can solve the problems of large overall thickness and high areal density, and achieve the effect of solving low areal density.

Active Publication Date: 2020-09-22
宁波甬翔检测技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the three materials with stealth performance, indestructibility performance and electromagnetic shielding performance will have disadvantages in composite applications: 1) The overall thickness is too large; 2) The surface density is too large; 3) It cannot be realized in the wide frequency range of 10KHz-18GHz Good electromagnetic shielding performance

Method used

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  • A stealth and anti-destruction shielding material and its preparation method
  • A stealth and anti-destruction shielding material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A stealth and anti-destroy shielding material, its structure schematic diagram is as follows figure 1 As shown, it is composed of a skin layer 1, a wave-absorbing foam layer 2, an indestructible layer 3, an electromagnetic shielding enhancement layer 4 and a reflective layer 5, wherein the wave-absorbing foam layer 2 is covered with a periodic hollow structure patterned absorbing layer. Wave material 7 compounded:

[0040] 1) Each layer is composited with E51 epoxy resin;

[0041] 2) The skin layer is made of quartz fiber with a thickness of 0.4mm and a relative dielectric constant of 2;

[0042]3) The foam of the wave-absorbing foam layer is PVC, a total of six layers, the first layer is 2.5mm, the second layer is 3.98mm, the third layer is 2.38mm, the fourth layer is 3.97mm, the fifth layer is 1.79mm, and the sixth layer is 4.79mm ;

[0043] 4) The anti-destruction layer is a single-layer bullet-proof board, selected from high-density polyethylene bullet-proof boar...

Embodiment 2

[0055] A stealth and anti-destroy shielding material, its structure schematic diagram is as follows figure 1 As shown, it is composed of a skin layer 1, a wave-absorbing foam layer 2, an indestructible layer 3, an electromagnetic shielding enhancement layer 4 and a reflective layer 5, wherein the wave-absorbing foam layer 2 is covered with a periodic hollow structure patterned absorbing layer. Wave material 7 compounded:

[0056] 1) Each layer is composited with 901 vinyl resin;

[0057] 2) The skin layer is made of glass fiber with a thickness of 0.2mm and a relative dielectric constant of 2.5;

[0058] 3) The foam of the wave-absorbing foam layer is PU, a total of six layers, the first layer is 1.5mm, the second layer is 2.36mm, the third layer is 3.66mm, the fourth layer is 2.98mm, the fifth layer is 0.75mm, and the sixth layer is 2.75mm ;

[0059] 4) The anti-destruction layer is a single-layer bullet-proof board, selected from high-density polyethylene bullet-proof boa...

Embodiment 3

[0071] A stealth and anti-destroy shielding material, its structure schematic diagram is as follows figure 1 As shown, it is composed of a skin layer 1, a wave-absorbing foam layer 2, an indestructible layer 3, an electromagnetic shielding enhancement layer 4 and a reflective layer 5, wherein the wave-absorbing foam layer 2 is covered with a periodic hollow structure patterned absorbing layer. Wave material 7 compounded:

[0072] 1) Each layer is composited with 901 vinyl resin;

[0073] 2) The skin layer is made of aramid fiber with a thickness of 0.5mm and a relative dielectric constant of 5;

[0074] 3) The foam of the wave-absorbing foam layer is PMI, a total of six layers, the first layer is 1.5mm, the second layer is 2.36mm, the third layer is 4.55mm, the fourth layer is 2.98mm, the fifth layer is 0.50mm, and the sixth layer is 5.00mm ;

[0075] 4) The anti-destruction layer is a single-layer bullet-proof board, selected from high-density polyethylene bullet-proof boa...

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Abstract

The invention discloses a stealth and anti-destruction shielding material and a preparation method thereof, which is an integral layered structure formed by sequentially stacking and connecting a skin layer, a wave-absorbing foam layer, an indestructible layer, an electromagnetic shielding enhancement layer and a reflection layer, and its thickness is 25-40mm. The invention perfectly combines three materials with stealth performance, anti-destruction performance and electromagnetic shielding performance, and realizes a composite material system with first-level stealth performance, bulletproof and anti-destruction effect and high-performance electromagnetic shielding. The anti-destruction performance is realized by high-density polyethylene polymer materials; the low surface density is realized by the structural design between the wave-absorbing foam and the wave-absorbing material, which solves the low surface density without affecting the stealth performance.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a stealth and anti-destruction shielding material and a preparation method thereof. Background technique [0002] Stealth materials are the key technology of modern warfare. Stealth materials commonly used at this stage include stealth coatings, stealth grass, and structural absorbing materials, among which stealth coatings are the most widely used. Stealth coating is to apply the coating containing wave absorbing agent directly on the outer surface of the equipment to form a wave absorbing layer. The stealth structure prepared by this method is vulnerable to erosion by the external environment and causes shedding, thereby affecting its stealth performance. [0003] At present, steel plates and ceramic plates are often used as bulletproof materials, but the weight of steel plates and ceramics seriously affects mobility. With the development of polymer ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/30B32B27/40B32B17/04B32B27/04B32B27/32B32B27/06B32B27/12B32B7/12B32B15/14B32B9/00B32B9/04B32B27/38B32B33/00
CPCB32B5/02B32B5/18B32B7/12B32B15/14B32B27/065B32B27/12B32B27/304B32B27/32B32B27/38B32B27/40B32B33/00B32B2262/0261B32B2262/10B32B2262/101B32B2262/106B32B2266/0235B32B2266/0278B32B2307/204B32B2307/212
Inventor 郏保琪蒋博周永江陈超陶名扬熊帮辉
Owner 宁波甬翔检测技术有限责任公司
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