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Structure and function integrated continuous fiber resin-based wave-absorbing stealth composite material and preparation method thereof

A continuous fiber and composite material technology, applied in the field of microwave absorption composite materials, can solve the problems of large thickness and narrow absorption bandwidth

Active Publication Date: 2021-05-11
ZHONGBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a continuous fiber resin-based wave-absorbing stealth composite material with integrated structure and function and its preparation method, so as to overcome the problems of narrow absorption bandwidth and large thickness in traditional laminate-type structure wave-absorbing composite materials

Method used

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  • Structure and function integrated continuous fiber resin-based wave-absorbing stealth composite material and preparation method thereof
  • Structure and function integrated continuous fiber resin-based wave-absorbing stealth composite material and preparation method thereof
  • Structure and function integrated continuous fiber resin-based wave-absorbing stealth composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] (1) Cut ultra-high molecular weight polyethylene fiber cloth, glass fiber cloth, and carbon fiber cloth to a length×width of 200×200mm, and weigh them to be 8 g, 200 g, and 15 g respectively; the selected length is the length of the cut fiber cloth ( i.e. 200 mm) and a continuous carbon fiber bundle with a width of 2 mm;

[0040] (2) Weigh 87 g of epoxy resin E51 and 48 g of curing agent polyetheramine D400 according to the mass ratio of 1:0.55, mix them evenly, and then put them in a vacuum oven at 85°C for 10 minutes to defoam to obtain the resin glue;

[0041] (3) Lay the glass fiber cloth cut out in (1), and arrange the glass fiber cloth cut out in (1) in a grid arrangement between any two layers of glass fiber cloth at a distance of 10 mm both horizontally and vertically. One bundle of carbon fiber bundles, even if n=2mm, and the carbon fiber bundles on the upper and lower layers of glass fiber cloth are misplaced, specifically, the grid of carbon fiber bundles on ...

Embodiment 2

[0046] (1) Cut ultra-high molecular weight polyethylene fiber cloth, glass fiber cloth, and carbon fiber cloth to a length×width of 200×200mm, and weigh them to be 8 g, 205 g, and 15 g respectively; the selected length is the length of the cut fiber cloth ( i.e. 200mm) and a continuous carbon fiber bundle with a width of 2 mm;

[0047] (2) Weigh 90 g of epoxy resin E51 and 51 g of curing agent polyetheramine D400 according to the mass ratio of 1:0.55, mix them evenly, and then put them into a vacuum oven at 85°C for 10 minutes to defoam to obtain the resin glue;

[0048] (3) Lay the glass fiber cloth cut out in (1), and arrange the glass fiber cloth cut out in (1) in a grid arrangement between any two layers of glass fiber cloth at a distance of 20 mm both horizontally and vertically. Two bundles of carbon fiber bundles, even if n=4mm, and the carbon fiber bundles on the upper and lower layers of glass fiber cloth are misplaced, that is, the grid of carbon fiber bundles on the...

Embodiment 3

[0053] (1) Cut ultra-high molecular weight polyethylene fiber cloth, glass fiber cloth, and carbon fiber cloth to a length×width of 200×200mm, and weigh them to be 7.5 g, 203 g, and 16 g respectively; the selected length is the length of the cut fiber cloth ( i.e. 200 mm) and a continuous carbon fiber bundle with a width of 2 mm;

[0054] (2) Weigh 92 g of epoxy resin E51 and 52 g of curing agent polyetheramine D400 according to the mass ratio of 1:0.55, mix them evenly, and then put them into a vacuum oven at 85°C for 10 minutes to defoam to obtain the resin glue;

[0055] (3) Lay the glass fiber cloth cut out in (1), and arrange the glass fiber cloth cut out in (1) in a grid arrangement between any two layers of glass fiber cloth at a distance of 30 mm both horizontally and vertically. Three bundles of carbon fiber bundles, even if n=6mm, and the carbon fiber bundles on the upper and lower layers of glass fiber cloth are misplaced, that is, the grid of carbon fiber bundles o...

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Abstract

The invention relates to the technical field of microwave absorption composite materials, in particular to a structure and function integrated continuous fiber resin-based wave-absorbing stealth composite material and a preparation method thereof. The structure and function integrated continuous fiber resin-based wave-absorbing stealth composite material is formed by compounding a wave-transparent layer, a wave-absorbing layer and a reflecting layer in sequence. The upper wave-transparent layer can provide good impedance matching performance; the middle wave-absorbing layer can endow the composite material with strong electromagnetic wave loss capability by means of dielectric loss, magnetic loss, one fourth wavelength loss and multiple scattering and edge scattering among carbon fiber bundles through array staggered arrangement of multiple layers of the continuous carbon fiber bundles or cooperative use of the middle wave-absorbing layer and wave-absorbing functional particles; and the bottom reflecting layer can reflect electromagnetic waves and is secondarily lost, so that the electromagnetic wave absorption performance of the composite material is further improved. According to the structure and function integrated continuous fiber resin-based wave-absorbing stealth composite material and the preparation method thereof, raw materials are wide in source, the forming process is stable, operation is convenient and fast, and the prepared composite material is excellent in wave absorbing performance and mechanical performance and has good application prospects in the military and civil fields.

Description

technical field [0001] The invention relates to the technical field of microwave-absorbing composite materials, in particular to a continuous fiber resin-based microwave-absorbing stealth composite material with integrated structure and function and a preparation method thereof. Background technique [0002] Structural wave-absorbing composite materials are radar wave stealth materials that are designed based on fiber reinforcements that take into account both wave-absorbing performance and mechanical properties. The stealth performance usually achieves the goal of reducing detectability by using special materials and structures. . Structural wave-absorbing materials have the advantages of good wave-absorbing performance, light weight, and loadability. They are one of the key research directions of wave-absorbing stealth technology in various countries, and are of great significance to the design and manufacture of stealth materials. The current structural absorbing composi...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29C70/10B29C70/88B32B27/38B32B27/04B32B33/00B32B17/04B32B37/10B32B37/12
CPCB29C70/34B29C70/10B29C70/88B32B27/38B32B27/04B32B33/00B32B17/04B32B37/10B32B2037/1253
Inventor 刘亚青杜晓梅韩冠宇樊益泽杜苏睿赵贵哲
Owner ZHONGBEI UNIV
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