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Preparation method for anti-dielectric substrate delamination of multi-layer fss radome

A radome and anti-dielectric technology, which is applied in the field of preparation of multi-layer FSS radome anti-dielectric substrate delamination, can solve the problems of mismatch between layers, poor exhaust, uneven thickness of dielectric layer, etc., and achieve operability strong effect

Active Publication Date: 2018-01-23
10TH RES INST OF CETC
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AI Technical Summary

Problems solved by technology

Provide a multi-layer FSS radome anti-dielectric substrate delamination preparation method that does not change the forming process of the frequency selective surface layer and dielectric layer, has strong operability, and solves the problem of unmatched media between layers
This method can avoid the air that is easy to be brought in during layup due to the non-adhesion between polyimide and prepreg, and cannot be eliminated through it. The air exhaust is not smooth, which will cause frequency selection. inequality problem

Method used

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  • Preparation method for anti-dielectric substrate delamination of multi-layer fss radome

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Embodiment Construction

[0015] In the following, a radome using four layers of frequency selective surfaces will be selected as an example to further illustrate the present invention.

[0016] refer to figure 1 figure 2 . According to the present invention, the base material of the frequency selective surface of the multilayer frequency selective surface stealth radome is polyimide. The dielectric layer material of the multilayer frequency selective surface stealth radome is quartz fiber cloth reinforced cyanate resin composite material.

[0017] Before the radomes are laid, plasma activation is performed on the polyimide frequency selective surface and cyanate resin is sprayed for tackifying treatment; the gas for plasma activation treatment on the polyimide frequency selective surface is O2 , processing power 2.5Kw ~ 4Kw, processing time 30min ~ 50 min. After treatment, active groups appear on the frequency selective surface of polyimide, which increases the surface energy, improves the chemica...

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Abstract

The invention discloses a preparation method for anti-dielectric substrate delamination of a multi-layer FSS radome. Before the radome is laminated, the polyimide frequency selective surface is plasma activated and the cyanate resin is sprayed for viscosity-increasing treatment; Quantitatively describe the influence of curing process parameters on the internal stress, establish the relationship model between the internal stress of the multilayer frequency selective surface stealth radome and the curing process parameters, and then make the polyimide frequency selective surface into prepreg; select according to the multilayer frequency The circuit design of the surface stealth radome requires the frequency selective surface and the layup sequence design of the composite material dielectric layer, and the layup is carried out according to the layup sequence; after the layup is completed, the autoclave is formed and cured. The invention makes up for the defect that air bubbles are easily trapped when the polyimide frequency selective surface and the dielectric layer prepreg are laminated in the traditional method, and solves the problem that the air bubbles cannot be excluded due to the barrier of the frequency selective surface when the dielectric layer is formed, and separation will occur. layer problem.

Description

technical field [0001] The invention relates to a preparation method for anti-dielectric substrate delamination of a multi-layer FSS radome, in particular to an anti-delamination method when the multi-layer frequency selective surface radome is formed. Background technique [0002] Antennas are strong scattering sources of satellites, and reducing the RCS of antennas is one of the important research topics in satellite stealth design. Due to the characteristics of the radar antenna system itself, it must ensure the normal reception and emission of its own radar waves, and the commonly used stealth measures cannot be simply applied to the radar antenna stealth. Combining frequency selective surface (FSS) technology and radome technology to form an FSS radome, the radome can obtain the function of frequency selection, that is, the FSS radome provides band-pass transmission characteristics for the radar working frequency band, and at the same time changes the radar working freq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/42
Inventor 敖辽辉
Owner 10TH RES INST OF CETC
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