Honeycomb sandwich layer structure and preparation method thereof

A technology of honeycomb interlayer and honeycomb core material, which is applied in the field of material forming to achieve the effects of stable and reliable honeycomb quality, avoiding collapse and good bonding interface

Inactive Publication Date: 2018-05-18
BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the honeycomb is a multi-porous material. When the resin is injected using the conventional process, it will flow into the honeycomb cells, and it is difficult to remove a large amount of gas in the honeycomb cells under vacuum conditions, and the gas easily enters the skin panel to form pores.

Method used

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  • Honeycomb sandwich layer structure and preparation method thereof
  • Honeycomb sandwich layer structure and preparation method thereof
  • Honeycomb sandwich layer structure and preparation method thereof

Examples

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preparation example Construction

[0039] Such as figure 1 As shown, the preparation method includes the following steps S101-S104:

[0040] S101, laying a layer of adhesive 2 on the upper surface, lower surface and surroundings of the honeycomb core material 1;

[0041] Specifically, the adhesive can be an adhesive film. Since both the skin panel material of the honeycomb core material and the adhesive film are made of resin, in order to ensure the compatibility between the resins, the material of the adhesive should be selected to be compatible with the honeycomb core material. The resin material of the skin panel is the adhesive film and prepreg of the same resin system, and the material with the same curing temperature level is selected, such as low temperature curing material, medium temperature curing material or high temperature curing material; optionally, the adhesive film material can be Henkel The company's HYSOL EA 9628, PL7000, METLBOND 1515, etc.

[0042] S102, laying a layer of prepreg 3 on the...

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PUM

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Abstract

The invention discloses a honeycomb sandwich layer structure and a preparation method thereof. The preparation method comprises the following steps of coating the upper surface and the lower surface respectively of a honeycomb core material with a layer of sticking substances; coating the upper surface and the lower surface of the honeycomb core material coated with the sticking substances with alayer of prepreg respectively; vacuumizing the honeycomb core material coated with the prepreg and curing the honeycomb core material coated with the prepreg under an atmospheric pressure to obtain the pretreated honeycomb core material; vacuumizing the pretreated honeycomb core material and curing the pretreated honeycomb core material to make the pretreated honeycomb core material shape up so asto obtain the honeycomb sandwich layer structure. The honeycomb sandwich layer structure is low in cost, and can prevent collapse of honeycomb materials.

Description

technical field [0001] The invention belongs to the technical field of material forming, and in particular relates to a preparation method of a honeycomb sandwich structure and a honeycomb sandwich structure prepared by the preparation method. Background technique [0002] The honeycomb sandwich structure is a layered structure composed of a skin and a honeycomb core material. It has the advantages of light weight, good strength and rigidity, impact resistance, and fatigue resistance. It is also one of the structural forms with the highest structural efficiency in aircraft structures. Common honeycomb core materials include aluminum honeycomb, Nomex honeycomb, etc. Honeycomb sandwich structure is widely used in aircraft wing leading edge, rudder, flap, aileron and other parts. [0003] At present, in the field of aviation, the preparation method of the honeycomb sandwich structure is mainly to lay the prepreg on the pre-processed honeycomb structure on the mold, and use the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/12B32B3/08B32B5/02B32B9/00B32B9/04B32B17/02B32B17/06B32B27/02B32B27/34B32B27/04B32B33/00B32B37/14B32B38/18
CPCB32B3/08B32B3/12B32B5/02B32B27/00B32B33/00B32B37/00B32B37/146B32B38/18B32B38/1858B32B2260/046B32B2262/0261B32B2262/101B32B2262/106
Inventor 熊美蓉丛晶洁陈凯
Owner BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC
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