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Integrated molding method for high-temperature-resistant heat-insulation wave-transmissive radome with honeycomb interlayer C

A molding method and technology of radome, which is applied in the field of composite material structure molding technology, can solve the problems of honeycomb sandwich structure service temperature not higher than 200°C and less research on radome, shorten assembly cycle, improve assembly quality, and improve insulation The effect of thermal performance

Active Publication Date: 2016-08-17
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the operating temperature of the above-mentioned honeycomb sandwich structure is not higher than 200°C, and it is powerless for the case of higher temperature requirements.
The polyimide honeycomb sandwich structure has excellent heat resistance and mechanical properties, but the polyimide honeycomb sandwich structure radomes are less studied in China

Method used

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  • Integrated molding method for high-temperature-resistant heat-insulation wave-transmissive radome with honeycomb interlayer C
  • Integrated molding method for high-temperature-resistant heat-insulation wave-transmissive radome with honeycomb interlayer C
  • Integrated molding method for high-temperature-resistant heat-insulation wave-transmissive radome with honeycomb interlayer C

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Embodiment 1

[0055] Step (1), preparation and molding of the overall weaving of the honeycomb core material 6; the preparation and molding of the overall weaving of the honeycomb core material 6 includes the following steps:

[0056] S1: Quartz fiber monofilament is used to continuously weave the honeycomb core material 6 as a whole. The honeycomb core material 6 includes a plurality of adjacent honeycomb cells, and the nodes between adjacent honeycomb cells are reinforced by physical weaving instead of the traditional chemical method. way of sticking;

[0057] S2: Soak the woven honeycomb core material 6 in the polyimide resin glue solution until completely soaked;

[0058] S3: Leave the fully soaked honeycomb core material 6 in the air at room temperature until all the solution contained therein is volatilized; then put it into a high-temperature oven and bake at 130° C. for 0.7 hours to realize the preparation and molding of the honeycomb core material 6 .

[0059] Such as image 3 Sh...

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Abstract

The invention discloses an integrated molding method for a high-temperature-resistant heat-insulation wave-transmissive radome with a honeycomb interlayer C and relates to the field of composite structure molding processes. The integrated molding method is realized through the steps of preparing a high-temperature-resistant polyimide honeycomb core; filling honeycomb core girds with aerogel; precuring a quartz / polyimide composite flanged connection frame; molding a quartz / polyimide skin; assembling through bonding by using a high-temperature-resistant glue film; coating; curing; machining and the like. The schematic diagram of the radome is as shown in figure 1; one-step integrated molding is realized by using an autoclave molding process and a stepwise preparation way of the core, the skin and a connecting flange, so that the problem that the high-temperature-resistant radome with the honeycomb interlayer structure has no multifunctional integration is solved, and the radome is enabled to be high-temperature-resistant and also meets the design requirements of heat insulation and wave transmission; and meanwhile, a flanged connection structure, shaped like a Chinese character Hui, of the radome is artfully and integrally molded together with a radome body, so that the connection process is simplified, the assembling quality is improved, and the assembling period is shortened.

Description

technical field [0001] The invention relates to the field of a composite material structure molding process method, in particular to an integrated molding method for a high-temperature-resistant, heat-insulating, and wave-transmitting honeycomb C sandwich radome. Background technique [0002] In the structural design of aerospace radome, more and more radome functions are required to be designed, which not only meet the requirements of wave penetration, but also meet the requirements of high temperature resistance, heat insulation, light weight and strength and rigidity. The honeycomb sandwich structure radome not only has the advantages of light weight, high strength, and good bending resistance, but also can obtain a smooth and flat appearance by controlling the molding process, so it has excellent aerodynamic performance. At the same time, the honeycomb sandwich structure also has mechanical properties, electrical properties The designability of performance and heat insul...

Claims

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Application Information

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IPC IPC(8): B29C70/44
CPCB29C70/44
Inventor 崔超潘玲英赵伟栋蒋文革刘含洋
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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