Forming method of thin-walled helical antenna supporting medium tube made of high-temperature-resistant polyimide composite

A technology of helical antenna and supporting medium, which is applied in the forming field of high-temperature-resistant polyimide composite material thin-walled helical antenna supporting medium tube, can solve the problems of reducing composite material forming processability and engineering application obstacles, and achieve excellent comprehensive performance , improve the mechanical properties, and fully pressurize the effect

Active Publication Date: 2016-07-27
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with PMR-15 resin, although the temperature resistance grade of the second-generation polyimide resin has been greatly improved, it reduces the molding processability of composite materials and hinders the expansion of its engineering application.

Method used

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  • Forming method of thin-walled helical antenna supporting medium tube made of high-temperature-resistant polyimide composite
  • Forming method of thin-walled helical antenna supporting medium tube made of high-temperature-resistant polyimide composite
  • Forming method of thin-walled helical antenna supporting medium tube made of high-temperature-resistant polyimide composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The resin is PMR type thermosetting polyimide resin, with PEPA (phenylethynyl phthalic anhydride) as the end-capping agent. After imidization, the minimum melt viscosity of the resin is 1000Pa.s (heating rate is 4°C / min). The reinforcement is QW220 quartz fiber twill cloth, the glue content is 48%, and the single layer thickness is 0.20mm.

[0057] The thickness of the helical antenna supporting dielectric tube is 2mm, the thickness of the bottom is 2mm, and the number of layers of the barrel and the bottom is 10 layers. Cut the prepreg block according to the design size of the product, and carry out the overall winding and laying on the surface of the male mold 1 to form a cylinder for the helical antenna to support the medium tube. , to complete the layering of the medium pipe;

[0058] Wrap the outer surface of the layer on the male mold 1 with a heat-shrinkable tape as a whole, and carry out imidization in a heating device such as an oven. The imidization process i...

Embodiment 2

[0064] The resin selection is the same as in Example 1, the reinforcement is QW110 quartz fiber twill cloth, the glue content is 50%, and the single layer thickness is 0.10 mm.

[0065] The thickness of the helical antenna supporting dielectric tube is 2mm, the thickness of the bottom is 2mm, and the number of layers of the barrel and the bottom is 20 layers. Cut the prepreg block according to the design size of the product, and carry out the overall winding and laying on the surface of the male mold 1 to form a cylinder for the helical antenna to support the medium tube. , to complete the layering of the medium pipe;

[0066] The outer surface of the laminate material on the male mold 1 is wrapped with a heat shrinkable tape, and imidized in a heating device such as an oven. The imidization process is as follows: heating up to 200°C, pressure 0.6MPa, and holding for 0.5 hours.

[0067] After the imidization is completed, the block female mold 2 and the imidized laminate are ...

Embodiment 3

[0071] The resin selection is the same as in Example 1, the reinforcement is EW220 glass fiber twill cloth, the glue content is 55%, and the single layer thickness is 0.20mm.

[0072] The helical antenna supports the medium tube with a body size of 2mm and a bottom of the tube with a thickness of 2mm. The prepreg block is cut according to the product design size, and the overall winding layer is carried out on the surface of the male mold 1 to form a cylinder for the helical antenna to support the medium tube. The bottom layer of the cylinder is turned down toward the cylinder to overlap the cylinder , to complete the layering of the medium pipe;

[0073] Wrap the outer surface of the laminate material on the male mold 1 with a heat shrinkable tape as a whole, and carry out imidization in a heating device such as an oven. The imidization process is as follows: heating up to 170°C and holding the temperature for 1.5 hours.

[0074] After the imidization is completed, the block...

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Abstract

The invention relates to a forming method of a thin-walled helical antenna supporting medium tube made of a high-temperature-resistant polyimide composite, belongs to the technical field of high-temperature-resistant wave-transparent resin matrix composite forming, and particularly relates to a forming method applied in space returner GPSs and S-frequency-band antenna spiral supporting medium tubes. A thin wall refers to the wall, with the wall thickness ranging from 1.5 mm to 3 mm, of the spiral antenna supporting medium tube. According to the mechanics, wave transmissivity, heat resistance and weight reduction requirements of the high-temperature-resistant thin-walled helical antenna supporting medium tube used for air returners, a special mold is designed, materials are preferentially selected, and the prepared spiral antenna supporting medium tube has the following excellent comprehensive performance.

Description

technical field [0001] The invention relates to a molding method for a thin-walled helical antenna support medium tube of a high-temperature-resistant polyimide composite material, which belongs to the technical field of high-temperature-resistant wave-transmitting resin-based composite material molding, and particularly relates to a method for GPS and S frequency bands of space return devices The forming method of the antenna spiral support medium tube, the thin wall means that the wall thickness of the spiral antenna support medium tube is 1.5mm-3mm. Background technique [0002] The wave-transparent material is a multifunctional dielectric material that protects the communication, telemetry, guidance, and detonation systems of the spacecraft in harsh environments. It is widely used in the antenna systems of space vehicles such as launch vehicles, spacecraft, missiles, and return satellites Applications. With the change of the working mechanism of the antenna system, high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54
CPCB29C70/342B29C70/54B29C70/545
Inventor 刘含洋赵伟栋潘玲英崔超张毅
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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