Method for producing a composite component

Patent metadata

Field	Value
Publication number	US-11548247-B2
Application number	US-201816188919-A
Country	US
Kind code	B2
Filing date	Nov 13, 2018
Priority date	Nov 30, 2017
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

A method for producing a component from a fibre-reinforced plastic includes the steps of providing a moulding tool having a tool surface, positioning a first layer of a textile semifinished product comprising dry fibres on the tool surface, arranging a second layer of an electrically conductive, resin-permeable grid on the first layer, arranging an uppermost arrangement of layers, sealing the arrangement of layers by a closure device to form a mould, introducing resin into the mould for infiltration of all the layers with the resin and curing and removal of the component.

First claim

The invention claimed is:

1. A method for producing a component from a fibre-reinforced plastic, comprising:
providing a moulding tool having a tool surface;
positioning a first layer of a textile semifinished product comprising dry fibres on the tool surface;
arranging a second layer of an electrically conductive, resin-permeable grid on the first layer;
arranging an uppermost arrangement of layers;
sealing the arrangement of layers by a closure device to form a mould;
introducing resin into the mould for infiltration of all the layers with the resin; and
curing and removal of the component, wherein the curing comprises heating the moulding tool, and wherein the first layer includes uncured resin before or during the curing, and
wherein the first layer is configured to provide a resin layer on an outer side of the component and
wherein the first layer comprises a material configured to disintegrate or decompose during heating of the moulding tool for curing of the component, so that uncured resin contained therein is at least partially given off into the remaining layers before the curing.

2. The method according to claim 1 , further comprising evacuating the mould.

3. The method according to claim 1 , wherein the resin-permeable electrically conductive grid is a woven fabric of a metallic material.

4. The method according to claim 1 , wherein the resin-permeable electrically conductive grid is a three-dimensional grid of a metallic material.

5. The method according to claim 1 , wherein the metallic material is copper or bronze.

6. The method according to claim 1 , wherein the first layer comprises unwoven fibres.

7. The method according to claim 1 , further comprising placing an intermediate layer between the electrically conductive, resin-permeable grid and the uppermost arrangement of layers,
wherein the intermediate layer comprises electrically nonconductive fibres.

8. The method according to claim 7 , wherein the fibres of the intermediate layer are glass fibres.

Assignees

• Airbus Operations Gmbh

Inventors

• Fastert Claus
• Stolz Johannes
• Seegel Hauke

Classifications

• B64C2001/0072

  from composite materials · CPC title

• B29L2031/3085

  Wings · CPC title

• B29C70/88

  characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced · CPC title

• B29L2031/3082

  Fuselages · CPC title

• B29C70/885 Primary

  with incorporated metallic wires, nets, films or plates (as lost heating elements B29C35/0272, B29C61/0625) · CPC title