Wave-absorbing material based on vertical micro-porous flexible nonwoven fabric and preparation and application of wave-absorbing material

A microwave-absorbing material and microporous technology, applied in textiles and papermaking, other chemical processes, chemical instruments and methods, etc., can solve the problems of insufficient wave-absorbing attenuation, only passive wave-absorbing, and insufficient wave-absorbing depth, etc., to achieve The effect of light weight, adjustable absorption rate and high absorption rate

Inactive Publication Date: 2020-06-23
SHANGHAI SHUQUE TRADING CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiments of the present application provide a wave-absorbing material based on vertical microporous flexible non-woven fabrics, which solves the problem of heavy weight, insufficient wave-absorbing depth, insufficient wave-absorbing attenuation range, and only The technical problem of passive wave absorption; the wave-absorbing material provided by the embodiment of this application can have a high absorption rate for electromagnetic waves in a wide frequency band; at the same time, it has light weight, adjustable and controllable electromagnetic wave absorption rate, and can be combined in shape The technical effect of deep wave absorption and active directional wave absorption

Method used

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  • Wave-absorbing material based on vertical micro-porous flexible nonwoven fabric and preparation and application of wave-absorbing material
  • Wave-absorbing material based on vertical micro-porous flexible nonwoven fabric and preparation and application of wave-absorbing material
  • Wave-absorbing material based on vertical micro-porous flexible nonwoven fabric and preparation and application of wave-absorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] This embodiment provides a wave-absorbing material based on vertical microporous flexible non-woven fabrics, such as figure 1 and figure 2 As shown, the wave-absorbing material based on vertical microporous flexible nonwoven fabrics includes vertical microporous flexible nonwoven fabrics, and wave-absorbing powder is uniformly adsorbed in the vertical microporous flexible nonwoven fabrics.

[0059] The vertical microporous flexible non-woven fabric includes the fiber body 1 of the network structure arranged vertically and set upright at 90 degrees. The fiber body 1 of the network structure forms uniform and directional pores 2, and the pores 2 are formed from the fiber body. 1 through the communication hole on one side to the other side. The pore 2 is adjustable and controllable, and its shape and size can be set and adjusted according to specific needs, including but not limited to circular, triangular, quadrilateral, pentagonal, hexagonal, etc.

[0060] The vertica...

Embodiment 2

[0095]On the basis of Example 1, this example provides another optional method for preparing a wave-absorbing material based on vertical microporous flexible non-woven fabrics by adjusting the relevant steps and process parameters of the preparation method, including the following steps:

[0096] Step S201: preparing a wave-absorbing powder solution;

[0097] Disperse 5 g of 20-mesh hydroxyl iron, 5 g of binder and 100 g of penetrant in water to form a wave-absorbing powder solution, wherein the solid content of the wave-absorbing powder is 15 wt%.

[0098] Step S202: preparing a flame-retardant vertical microporous flexible non-woven fabric;

[0099] Mix 30wt% PE / PET (polyethylene / polyethylene terephthalate) low-melting fiber with 70wt% flame-retardant polyester fiber, comb it into a web, and then go through a folding web-forming equipment to form a folded Type network structure fiber body, after being heat-treated in an oven at 195°C for 10 minutes, a flame-retardant vertic...

Embodiment 3

[0109] On the basis of Embodiment 1 and Embodiment 2, this embodiment provides a wave-absorbing material with a layered gradient profiled structure.

[0110] Specifically, the plate-shaped wave-absorbing material 10 based on vertical microporous flexible non-woven fabrics in Embodiment 1 is combined with the zigzag-shaped wave-absorbing material 20 based on vertical microporous flexible non-woven fabrics in Example 2. , glued together. The zigzag-shaped wave-absorbing material in the second embodiment is located at the upper part 20, and the plate-shaped wave-absorbing material 10 in the first embodiment is located at the lower part, as Figure 5 As shown, a layered absorbing structure material with gradient and special-shaped appearance structure is formed.

[0111] In addition to the beneficial effects of Embodiment 2, the above-mentioned technical solutions in the embodiments of the present application also have the following technical effects or advantages: they can be cu...

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Abstract

The invention discloses a wave-absorbing material based on a vertical micro-porous flexible nonwoven fabric and a preparation method and application of the wave-absorbing material. The wave-absorbingmaterial comprises the vertical micro-porous flexible nonwoven fabric, wherein the vertical micro-porous flexible nonwoven fabric comprises fibers which are arranged vertically in a netlike structure;pores arranged uniformly and directionally are formed in the fibers, and the pores are communicating holes which penetrate through the fibers from one side to the other side; and wave-absorbing powder is uniformly adsorbed in the vertical micro-porous flexible nonwoven fabric. The wave-absorbing material based on the vertical micro-porous flexible nonwoven fabric can have a high absorption rate on electromagnetic waves in a wide frequency band; and meanwhile, the wave-absorbing material has the technical effects that the mass is small, the electromagnetic wave absorption rate can be adjustedand controlled, model combination can be realized, and the material can absorb waves deeply, actively and directionally.

Description

technical field [0001] The invention relates to the technical field of electromagnetic wave absorbing materials, in particular to an electromagnetic wave absorbing material based on vertical microporous flexible non-woven fabrics and its preparation method and application. Background technique [0002] Electromagnetic wave absorbing material refers to a class of materials that can absorb electromagnetic wave energy projected onto its surface. In the increasingly important stealth and electromagnetic compatibility (EMC) technology, the role and status of electromagnetic wave absorbing materials are very prominent, and have become the magic weapon and "secret weapon" of electronic countermeasures in modern military. [0003] Absorbing materials are generally divided into two types, one is the absorbing coating coated on the target surface, and the other is the structural absorbing material with a thickness of centimeters. The wave-absorbing coating adopts the principle of int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D06M11/83C09K3/00D06M101/20D06M101/32
CPCD06M11/74D06M11/83C09K3/00D06M2101/20D06M2101/32
Inventor 秦爽王根泉周恒安
Owner SHANGHAI SHUQUE TRADING CO LTD
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