Preparation method of wave absorbing material used in satellite communication uplink frequency band of C wave band

A technology for satellite communication and absorbing materials, applied in chemical instruments and methods, other chemical processes, grain processing, etc., can solve problems such as unsatisfactory impedance matching of materials, and achieve superior absorbing performance, easy availability of raw materials, and absorbing performance. Good results

Active Publication Date: 2017-11-17
安徽璜峪电磁技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional ball milling method is to use a spherical ball mill to grind the material. The impedance matching of the material obtained by this method is often still unsatisfactory.

Method used

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  • Preparation method of wave absorbing material used in satellite communication uplink frequency band of C wave band
  • Preparation method of wave absorbing material used in satellite communication uplink frequency band of C wave band
  • Preparation method of wave absorbing material used in satellite communication uplink frequency band of C wave band

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method for a wave-absorbing material applied to the satellite communication uplink frequency band in the C-band, comprising the steps of:

[0029] Put carbonyl iron powder (80g), composite coupling agent (2g zinc stearate + 2ml titanate), 100ml absolute ethanol, and 400g bearing steel rollers into a ball mill pot and seal it for ball milling. The horizontal planetary ball mill is 500r / min speed ball mill for 10 hours; 400g bearing steel rollers are composed of three types of large, medium and small cylindrical rollers with diameters and heights of 20mm, 10mm and 6mm. The mass of the large, medium and small cylindrical rollers The ratio is large: medium: small = 10:40:50, and the ratio of the height to diameter of the large, medium and small bearing steel rollers is 1:1.

[0030] The slurry after ball milling was taken out, heated at 50° C. for 3 hours and dried to obtain the wave-absorbing material of the present invention. The wave-absorbing material and...

Embodiment 2

[0032] A preparation method for a wave-absorbing material applied to the satellite communication uplink frequency band in the C-band, comprising the steps of:

[0033] Put carbonyl iron powder (100g), composite coupling agent (2g zinc stearate + 4ml titanate), 200ml absolute ethanol, and 800g bearing steel rollers into a ball mill pot and seal it for ball milling. Ball milling at 400r / min for 12 hours; 400g bearing steel rollers are composed of three types of large, medium and small cylindrical rollers with diameters and heights of 20mm, 10mm and 6mm. The mass of large, medium and small cylindrical rollers The ratio is large: medium: small = 5:45:50, and the ratio of the height to diameter of the large, medium and small bearing steel rollers is 0.8:1. The slurry after ball milling was taken out, heated at 60° C. for 2 hours and dried to obtain the wave-absorbing material of the present invention.

Embodiment 3

[0035] A preparation method for a wave-absorbing material applied to the satellite communication uplink frequency band in the C-band, comprising the steps of:

[0036] Put carbonyl iron powder (90g), composite coupling agent (2g zinc stearate + 3ml titanate), 150ml absolute ethanol, and 600g bearing steel rollers into a ball mill pot and seal it for ball milling. 450r / min speed ball mill for 8 hours; 400g bearing steel rollers are composed of three types of large, medium and small cylindrical rollers with diameters and heights of 20mm, 10mm and 6mm. The mass of large, medium and small cylindrical rollers The ratio is large: medium: small = 10:40:50, and the ratio of the height to diameter of the large, medium and small bearing steel rollers is 1.2:1. The slurry after ball milling was taken out, heated at 40° C. for 4 hours and dried to obtain the wave-absorbing material of the present invention.

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Abstract

A purpose of the present invention is to provide a preparation method of a wave absorbing material used in the satellite communication uplink frequency band of a C wave band so as to meet the 5.925-6.425 GHz frequency band wave absorbing material used for satellite communication uplink in the C waveband. The method comprises: placing carbonyl iron powder, a composite coupling agent (zinc stearate and titanate), anhydrous ethanol and a bearing steel roller into a ball mill tank, and carrying out ball milling in a horizontal planetary ball mill; and heating the obtained slurry for 2-4 h at a temperature of 40-60 DEG C, and drying to prepare the wave absorbing material for. According to the present invention, the reflection loss is calculated according to a transmission line theory, wherein the reflection loss RL is less than -15 dB at the C waveband of 5.925-6.425 GHz when the thickness of the coating is less than 1.5 mm; and the wave absorbing material has advantages of thin wave absorbing coating, low area density, easily available raw materials, simple production and the like, and the preparation method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of magnetic wave-absorbing materials, and in particular relates to a preparation method of a wave-absorbing material used in the uplink frequency band of satellite communication in the C-band. Background technique [0002] In recent years, in the military field, the demand for comprehensive and reliable communication support has become higher and higher, which has led to the inseparability of an integrated information system integrating sea, land, air and space. At present, various satellite communication systems are valued by various countries and have been widely used. application. Especially for vehicle-mounted mobile satellite communication systems, the distance between personnel and equipment is close, and electromagnetic radiation is likely to cause harm to personnel. Therefore, the application of absorbing materials to protect operators can effectively reduce the impact of electromagnetic radiation. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/16C09K3/00C09D1/00B02C17/10B02C17/20
CPCB02C17/10B02C17/20C01G49/16C01P2004/03C01P2006/40C01P2006/42C09D1/00C09K3/00
Inventor 谢国治顾家新胡晶谭鑫王瑞邢贝贝胡鑫陈将伟
Owner 安徽璜峪电磁技术有限公司
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