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A Deformable Method for Testing the Reflectivity of Absorbing Material Plates

A technology of microwave-absorbing materials and testing methods, which is applied in the direction of material analysis, analytical materials, and measuring devices using microwave means, which can solve the problems that hinder the research and application of microwave-absorbing materials, and the microwave-absorbing properties of microwave-absorbing materials cannot be effectively and accurately evaluated , Inability to accurately test the reflectivity of the absorbing material plate, etc., to achieve the effect of simple production and accurate and credible test results

Active Publication Date: 2022-04-01
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual research process of absorbing materials, due to the influence of the preparation process conditions or after long-term thermal assessment, the absorbing material plate has a certain deformability, and its surface flatness is greater than 0.1mm, even reaching 3mm, which cannot be achieved by using the traditional bow method. Accurately test the reflectivity of the deformable absorbing material plate. At present, there is no document disclosing the reflectivity test method of the deformable absorbing material plate. The absorbing performance of the absorbing material cannot be effectively and accurately evaluated, which hinders research and application

Method used

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  • A Deformable Method for Testing the Reflectivity of Absorbing Material Plates
  • A Deformable Method for Testing the Reflectivity of Absorbing Material Plates
  • A Deformable Method for Testing the Reflectivity of Absorbing Material Plates

Examples

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Embodiment 1

[0026] A method for testing the reflectivity of a wave-absorbing material plate with deformability, comprising the following steps:

[0027] (1) The test system is turned on and preheated, and the measurement parameters are input into the test system, such as figure 1 As shown, the test system includes a vector network analyzer 1, a bow frame 2, a transmitting antenna 3, a receiving antenna 4, a sample holder 5 and a background absorbing material 6;

[0028] (2) Place the calibration plate on the sample holder, measure the reflected power of the calibration plate, and paste the calibration patch on the absorbing material plate to form a calibration plate. The calibration patch is composed of an aluminum foil layer and an acrylic pressure-sensitive adhesive layer. The thickness of the metal foil layer is 50 μm, and the thickness of the adhesive layer is 20 μm;

[0029] (3) Remove the calibration patch, place the absorbing material plate on the sample holder, and measure the re...

Embodiment 2

[0038] A method for testing the reflectivity of a wave-absorbing material plate with deformability, comprising the following steps:

[0039] (1) The test system is turned on and preheated, and the measurement parameters are input into the test system, such as figure 1 As shown, the test system includes a vector network analyzer 1, a bow frame 2, a transmitting antenna 3, a receiving antenna 4, a sample holder 5 and a background absorbing material 6;

[0040] (2) Place the calibration board on the sample holder and measure the reflected power of the calibration board. The calibration patch is pasted on the absorbing material board to form a calibration board. The calibration patch is pressed by a copper-clad polyimide film and a rubber system. The adhesive layer is composed of a copper layer with a thickness of 15 μm, a polyimide film with a thickness of 50 μm, and an adhesive layer with a thickness of 50 μm.

[0041] (3) Remove the calibration patch, place the absorbing mater...

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Abstract

The invention relates to the technical field of microwave testing, and specifically discloses a method for testing the reflectivity of a deformable wave-absorbing material plate, comprising the following steps: the test system is turned on and preheated, and measurement parameters are input; the calibration patch is completely attached to the wave-absorbing material A calibration plate is formed on the surface of the plate, and the reflection power of the calibration plate is measured; the calibration patch is removed, and the reflection power of the absorbing material plate is measured; the reflectivity of the absorbing material is calculated. The reflectivity testing method of the present invention can accurately test the reflectivity of a deformable wave-absorbing material plate, and provide basis and data support for the evaluation of the wave-absorbing performance of the wave-absorbing material and the development and application of the wave-absorbing material.

Description

technical field [0001] The invention belongs to the technical field of microwave testing, in particular to a method for testing the reflectivity of a wave-absorbing material plate with deformability. Background technique [0002] With the rapid development of radar technology, the role of radar wave absorbing materials in the stealth defense system of military equipment is becoming more and more important. Radar reflectivity is an important index parameter used to measure the absorbing performance of absorbing materials. Accurate measurement of the reflectivity of absorbing materials is of great significance for the study of the characteristics of absorbing materials. Commonly used methods for testing the reflectivity of absorbing materials include: compact field, bow method, etc. In order to achieve a comprehensive and accurate evaluation of the absorbing performance of the absorbing material, the test method must meet the following requirements: the incident angle of elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N22/00
CPCG01N22/00
Inventor 刘海韬黄文质
Owner NAT UNIV OF DEFENSE TECH