Honeycomb three-dimensional integral woven structure type wave-absorbing composite material and preparation method thereof

A composite material and honeycomb technology, applied in shielding materials, magnetic/electric field shielding, electrical components, etc., can solve problems such as poor structural performance, easy cracking, and poor integrity, and achieve good wave-absorbing performance, reduced reflection, and integrity Good results

Active Publication Date: 2021-04-09
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on the above inadequacies, the present invention proposes a honeycomb three-dimensional integral woven structural wave-absorbing composite material and a preparation method to solve the shortcomings of the existing structure-type wave-absorbing composite materials, such as poor structural performance, poor integrity and easy cracking

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Honeycomb three-dimensional integral woven structure type wave-absorbing composite material and preparation method thereof
  • Honeycomb three-dimensional integral woven structure type wave-absorbing composite material and preparation method thereof
  • Honeycomb three-dimensional integral woven structure type wave-absorbing composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A honeycomb three-dimensional overall woven structure wave-absorbing composite material is prepared by the following steps:

[0038] 1) According to the characteristics of the honeycomb three-dimensional woven fabric to be woven, adopt a reasonable organizational structure such as figure 1 As shown in the figure, design the pattern pattern and drafting pattern of the fabric, and select the reed number of 40 reed / 10cmd, use 240 pieces of 800tex basalt fiber filament yarn and 120 pieces of 800tex carbon fiber filament yarn, and weave the suction on the ordinary loom. The wave layer is a single-layer honeycomb three-dimensional woven fabric;

[0039] 2) the rigid polyurethane foam is cut into a strip-shaped triangular prism, and the cross-section at both ends is an isosceles triangle whose base length is 15 mm and height is 7 mm;

[0040] 3) filling the rigid polyurethane foam prepared in step 2) into the holes of the honeycomb three-dimensional woven fabric woven in step...

Embodiment 2

[0044]A honeycomb three-dimensional overall woven structure wave-absorbing composite material is prepared by the following steps:

[0045] 1) According to the characteristics of the honeycomb three-dimensional woven fabric to be woven, adopt a reasonable organizational structure such as figure 2 As shown in the figure, design the pattern pattern and drafting pattern of the fabric, and select the reed number of 40 reed / 10cmd, use 480 pieces of 800tex basalt fiber filament yarn and 120 pieces of 800tex carbon fiber filament yarn, and weave the suction on the ordinary loom. Honeycomb three-dimensional woven fabric with two wave layers;

[0046] 2) the rigid polyurethane foam is cut into a strip-shaped triangular prism, and the cross-section at both ends is an isosceles triangle whose base length is 15 mm and height is 7 mm;

[0047] 3) filling the triangular rigid polyurethane foam prepared in step 2) into the holes of the honeycomb three-dimensional woven fabric woven in step ...

Embodiment 3

[0051] A honeycomb three-dimensional overall woven structure wave-absorbing composite material is prepared by the following steps:

[0052] 1) According to the characteristics of the honeycomb three-dimensional woven fabric to be woven, adopt a reasonable organizational structure such as image 3 As shown in the figure, design the pattern pattern and drafting pattern of the fabric, and select the reed number of 40 reed / 10cmd, use 720 pieces of 800tex basalt fiber filament yarn and 120 pieces of 800tex carbon fiber filament yarn, and weave the suction on the ordinary loom. Honeycomb three-dimensional woven fabric with three wave layers;

[0053] 2) the rigid polyurethane foam is cut into a strip-shaped triangular prism, and the cross-section at both ends is an isosceles triangle whose base length is 15 mm and height is 7 mm;

[0054] 3) filling the triangular rigid polyurethane foam prepared in step 2) into the holes of the honeycomb three-dimensional woven fabric woven in ste...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a honeycomb three-dimensional integral woven structure type wave-absorbing composite material and a preparation method thereof, and belongs to the technical field of functional materials. The composite material comprises a wave-transmitting layer, wave-absorbing layers and a reflecting layer from top to bottom. The wave-transparent layer is basalt fiber filament yarn which is used as an impedance matching layer and has an electromagnetic wave transmission characteristic; the wave absorbing layer is of a honeycomb structure woven by basalt fiber filaments and filled with rigid polyurethane foam; and the reflecting layer is carbon fiber filament yarn which can reflect electromagnetic waves penetrating through the wave absorbing layer and enhance secondary absorption of the electromagnetic waves and has the electromagnetic wave reflecting characteristic, the number of the wave-absorbing layers is one or more, and the cross section of each wave-absorbing layer is triangular. The product is good in integrality, small in thickness and good in wave absorbing performance, and has the bearing capacity. The wave-absorbing material is simple in processing technology, durable in use and low in cost, the thickness can be adjusted according to different applicable environments, green and environment-friendly materials are used, and the low-carbon and environment-friendly age requirements are met while the wave-absorbing performance is met.

Description

technical field [0001] The present invention relates to the technical field of functional materials, in particular to a honeycomb-shaped three-dimensional integral woven structure wave-absorbing composite material and a preparation method thereof. Background technique [0002] In the current wave of information age, electronic information technology has developed rapidly. Electromagnetic waves, as the most efficient and common carrier of information dissemination, have covered every corner of people's daily life. While people rely on electromagnetic waves to transmit information and accelerate the development of information modernization, they are also facing various threats brought by electromagnetic radiation. When aerospace equipment such as aircraft is working, the interference of radio waves may cause electronic instruments to fail, and interfere with aircraft indication signals or air command signals; electromagnetic waves will interfere with the precise positioning of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L75/04C08K13/04C08K7/06C08K7/10C08K3/04C08K3/08C08J5/04H05K9/00
CPCC08J5/047C08J5/042H05K9/009C08J2363/00C08J2475/04C08K13/04C08K7/06C08K7/10C08K3/04C08K2003/0856
Inventor 吕丽华刘文迪郭静钱永芳高原周兴海王滢熊小庆
Owner DALIAN POLYTECHNIC UNIVERSITY
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