6G radome suitable for terahertz antenna and preparation method thereof

A radome and terahertz technology, applied in the directions of antennas, antenna parts, radiation unit covers, etc., can solve the problems of insubstantial reports, limit the heat resistance of radomes, and less 6G radomes, so as to reduce mutual The effect of interference, reducing the difficulty of the preparation process and improving the quality of the product

Active Publication Date: 2019-10-18
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The glass transition temperature of epoxy resin is lower than 300°C, and its heat resistance is poor, which limits the heat resistance of the radome
[0006] There are few related studies on 6G radome in the prior art, and there are no reports of substantive content

Method used

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  • 6G radome suitable for terahertz antenna and preparation method thereof
  • 6G radome suitable for terahertz antenna and preparation method thereof
  • 6G radome suitable for terahertz antenna and preparation method thereof

Examples

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preparation example Construction

[0051] The present invention provides a kind of preparation method of described 6G radome in the second aspect, and this preparation method comprises the following steps:

[0052] (1) Melting and impregnating the quartz fiber fabric with the polyphenylene ether modified bisphenol M cyanate resin to obtain a prepreg. Melting can be at 60-70°C (it can be any value within this range, for example, it can be 60°C, 61°C, 62°C, 63°C, 64°C, 65°C, 66°C, 67°C, 68°C, 69°C , 70°C).

[0053] (2) Put the foam core layer on the mold, heat and pre-shape.

[0054] (3) Lay the prepreg prepared in step (1) and the foam core layer treated in step (2) sequentially in the order of inner skin, foam core layer, middle skin, foam core layer, and outer skin form a sandwich structure.

[0055] (4) Autoclave heating and pressurized curing molding, the curing temperature is preferably 80-130°C, which can be any value within this range, for example, it can be 80°C, 85°C, 90°C, 95°C, 100°C, 105°C, 110°C...

Embodiment 1

[0059] This embodiment provides a preparation method of polyphenylene ether modified bisphenol M cyanate resin.

[0060] Specifically include the following steps:

[0061] Weigh 280g of bisphenol M-type cyanate monomer into the flask, and carry out prepolymerization reaction at 150°C under the protection of nitrogen. Then, 41.8 g of polyphenylene ether was weighed and added into the flask, and stirred evenly at 110°C. Subsequently, 0.193 g of transition metal catalyst was added at 80° C. and stirred evenly.

[0062] The dielectric constant of the product is ≤2.6, and the loss factor is ≤0.004.

Embodiment 2

[0064] This embodiment provides a preparation process for a 6G radome with a C sandwich structure.

[0065] The structure of the 6G radome includes an outer skin, a foam core layer, a middle skin, a foam core layer and an inner skin in turn, and the outer skin is covered with an outer paint layer, and the components of the outer paint layer include epoxy-based putty, ring Oxygen two-component primer and fluoroplastic topcoat.

[0066] Skin (outer skin, middle skin and inner skin) material: quartz fiber (quartz fiber braid) reinforced polyphenylene ether modified cyanate (prepared according to Example 1) composite material.

[0067] Core material: PMI closed cell foam.

[0068] The specific preparation methods include:

[0069] S1. Melt the polyphenylene ether modified bisphenol M cyanate resin at 60°C and impregnate the quartz fiber braid, and control the impregnation conditions to obtain a prepreg with a glue content of 35wt%.

[0070] S2. Put the foam core layer on the mo...

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Abstract

The invention relates to a 6G radome suitable for a terahertz antenna and a preparation method thereof. The radome comprises an outer skin, a foam core layer, a middle skin, a foam core layer and an inner skin. The 6G radome is characterized in that the prepreg formed by combination of fiber reinforcement and resin is used as the skin material. As for the prpreg, the resin is polyphenylene ether modified bisphenol M cyanate ester resin and has the following dielectric properties: dielectric constant is less than or equal to 2. 6 and the loss factor is less than or equal to 0. 004. The fiber reinforcement is quartz fiber braid. The prepreg gum content is 30wt%-44wt%. The hot-pressing pot forming technology is used. The radome has high wave transmittance within the range of 100-200GHz and can meet the transmission performance requirements of the 6G antenna network within the terahertz band.

Description

technical field [0001] The invention relates to the technical field of sandwich structure wave-transparent composite materials, in particular to a 6G radome suitable for terahertz antennas and a preparation method thereof. Background technique [0002] Today, after more than 100 years of wireless communication development, resources in the 500MHz to 5GHz frequency band in the communication field have become increasingly scarce. Although future quantum communication technology is worth looking forward to, it is still somewhat out of reach. The terahertz band, which has been "forgotten", integrates the advantages of microwave communication and optical communication. It has many characteristics such as high transmission rate, large capacity, strong directionality, high security and good penetration. It is widely used in communication applications. The prospects on the Internet are attractive, and it has become a hot spot for mining and development in various countries. The fre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/42
CPCH01Q1/424
Inventor 兰天李南张昊唐培毅蔡汝峰
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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