Process for manufacturing a part made of a composite having a hollow core

A technology of synthetic materials and cores, applied to objects with hollow walls, household appliances, and other household appliances, etc., can solve the problems of complex and large-scale manufacturing methods, and achieve the effect of improving mechanical properties

Inactive Publication Date: 2013-02-06
洛林航空工程公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0033] However, these methods require a large number of intermediate layers (adhesive layers, barrier layers, etc.), which makes the application of the fabrication method relatively complex

Method used

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  • Process for manufacturing a part made of a composite having a hollow core
  • Process for manufacturing a part made of a composite having a hollow core
  • Process for manufacturing a part made of a composite having a hollow core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] figure 1 The manufacture of a sealed hollow-cell honeycomb core 1 for the manufacture of composite material parts is shown.

[0059] To this end, the honeycomb core 1 is placed on a mold 2 and covered by a semi-rigid film 3 which forms a counter-mold and is associated with a device 4 for matching the mold 2 and the semi-rigid A vacuum is applied to the inner space defined by the membrane 3 .

[0060] The vacuum applied may typically be a vacuum of less than 100 mbar, and preferably a vacuum of greater than 4 mbar.

[0061] The semi-rigid membrane 3 can be, for example, a silicone membrane.

[0062] Gasket 5 ensures the seal between semi-rigid membrane 3 and mold 2 .

[0063] According to the invention, the honeycomb core 3 has upper and lower open surfaces covered with a polymerizable adhesive film 6, in particular of the epoxy adhesive type.

[0064]Preferably, the polymerizable adhesive film 6 is supported, ie reinforced, by weft threads, in particular by glass fi...

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PUM

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Abstract

The present invention relates to a process for manufacturing a part made of a composite having a hollow core (1) comprising the following steps: - applying at least one adhesive layer (6) to an open surface of the hollow core, said process being characterized in that the adhesive layer is a polymerizable blocking adhesive layer having, after polymerization, sealing properties with respect to a resin, and capable of preventing the diffusion of a resin into the hollow core; - and polymerizing the blocking adhesive layer so as to seal the hollow core.

Description

technical field [0001] The invention relates to a method for the manufacture of components of synthetic material by resin transfer moulding. Background technique [0002] Many known methods of molding by fibers impregnated with resin, in particular using closed moulds, can be used to manufacture components of synthetic material. [0003] First of all, mention may be made of the resin transfer molding method (RTM). [0004] In the RTM method, a set of fiber elements is arranged in a specific manner around the support, and this set of elements is placed inside a closed mold whose overall shape corresponds to the shape of the part to be manufactured. [0005] In conventional RTM methods, the die is formed from a female or master die and a counter die or punch section. [0006] The resin is then injected into the mold and polymerized. The resin particles then begin to bond together and form a solid network, resulting in a rigid part of the synthetic material formed from fiber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/08B29C70/34B29C70/44B29C70/86B29D24/00
CPCB29C65/486B29C70/443C09J201/00B29C70/086B29C70/865B29C70/342Y10T156/10
Inventor 佛罗伦斯·卡斯特涅埃尔维·于尔林帕特里克·马丁阿兰·德肯托马里于斯·米阿吕塔亨利-弗朗索瓦·佩兰路易·贝特加让-皮埃尔·科舒瓦热罗姆·西尼理查德·芒格诺
Owner 洛林航空工程公司
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