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Preparation method of wave-absorbing material with layered structure

A wave absorbing material, layered structure technology, applied in electrical components, antennas, magnetic field/electric field shielding and other directions, can solve the problems of high temperature resistance and low corrosion resistance, improve high temperature resistance and corrosion resistance, and improve density , the effect of shortening the time

Inactive Publication Date: 2021-10-29
苏州容纱新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In this embodiment, a preparation method of a layered structure absorbing material is provided to solve the problem of low high temperature resistance and low corrosion resistance of the absorbing material in the prior art after processing

Method used

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  • Preparation method of wave-absorbing material with layered structure

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preparation example Construction

[0029] The preparation method in this embodiment can be applied to absorbing materials. For example, the following corrosion-resistant carbon-based absorbing material is provided in this embodiment. The preparation method in this embodiment can be used for corrosion-resistant carbon-based absorbing materials. wave material.

[0030] It includes a wave-absorbing material, and the two sides of the wave-absorbing material are respectively provided with a limit inserting rod and a limit slot, and the limit slot and the limit inserting rod are set in one-to-one correspondence, and the bottom of the wave-absorbing material is close to the limit One side of the insertion rod is equipped with a clamping device, and the other side of the wave-absorbing material is provided with a fixing plate. The rod and the adjustment cylinder are respectively fixedly connected to the bottom of the wave-absorbing material. The top support spring rod is movably inserted into the adjustment cylinder, a...

Embodiment 1

[0034] The preparation method of the layered structure absorbing material comprises the following steps:

[0035] (1) prepare sol;

[0036] (2) After drying the sol, burn it;

[0037] (3) Repeatedly grinding and drying the burned ash to make powder;

[0038] (4) Add an organic binder to the powder and mix evenly;

[0039] (5) The mixed material is hot-pressed and sintered into shape.

[0040]In the step (1), when preparing the sol, add metal nitrate, modified binder and complexing agent to water, stir to form a solvent, then adjust the pH value of the solvent to 7, after the adjustment is completed, heat again Stir to form a sol.

[0041] The complexing agent in the step (1) is polyphosphate or aminocarboxylic acid, and the modified adhesive can be butyl titanate. When adjusting the pH value, add ammonia water to the inside of the solvent several times in small amounts. After adding During the process, the pH value of the solvent needs to be measured repeatedly.

[0042]...

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Abstract

The invention discloses a preparation method of a wave-absorbing material with a layered structure. The preparation method of the wave-absorbing material with the layered structure comprises the following steps: preparing sol; drying the sol, and burning the dried sol; repeatedly grinding and drying the burnt ashed substance to prepare powder; adding an organic binder into the powder and uniformly mixing materials; and carrying out hot pressing sintering molding on the mixed material. By adding a small amount of aluminum powder and monatomic silicon powder into the powder, the porosity can be reduced, the density of the material is improved, the strength and sintering performance of the material are improved, the monatomic silicon powder can also be used as an initiator of the aluminum powder, and the oxidation reaction time of the aluminum powder is shortened; the problem that an existing wave-absorbing material is low in high-temperature resistance and corrosion resistance after being processed is solved, and the high-temperature resistance and corrosion resistance of the wave-absorbing material are improved while the wave-absorbing performance is guaranteed.

Description

technical field [0001] The present application relates to a preparation method, especially a preparation method of a layered structure wave-absorbing material. Background technique [0002] Absorbing material refers to a class of materials that can absorb or greatly reduce the electromagnetic wave energy received by its surface, thereby reducing the interference of electromagnetic waves. In engineering applications, in addition to requiring a high absorption rate of electromagnetic waves in a wide frequency band, the absorbing material also needs to have properties such as light weight, temperature resistance, moisture resistance, and corrosion resistance. In the increasingly important stealth and electromagnetic compatibility technologies , the role and status of electromagnetic wave absorbing materials are very prominent. [0003] At present, there are many types of wave-absorbing materials on the market, and the preparation methods of different wave-absorbing materials a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00H01Q17/00
CPCH05K9/0088H01Q17/008H01Q17/004
Inventor 郝沙沙
Owner 苏州容纱新材料科技有限公司
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