A process for the manufacture of a fibrous preform formed of...

Details A process for the manufacture of a fibrous preform formed of... A process for the manufacture of a fibrous preform formed of...

D - Textiles, Paper

01

H

D01H 7/00 (2006.01) D02G 3/18 (2006.01)

Patent

CA 2056789

A fibrous preform is formed from a yarn composed of long discontinuous fibers made of a refractory material or its precursor. the discontinuous fibers are disposed parallel to one another without twist, and theintegrity of the yarn is achieved by a covering yarn made of a fugitive material. The fibrous preform is intended to be densified by a matrix material for the manufacture of a composite material article. The covering yarn is eliminated before the preform is densified by the matrix material.

Préforme fibreuse formée d'un fil composé de longues fibres discontinues d'une matière réfractaire ou de son précurseur. Les fibres discontinues sont disposées sans torsion en parallèle les unes par rapport aux autres, et l'intégrité du fil est préservée par un fil de recouvrement d'un matériau volatil. La préforme fibreuse est conçue afin d'être densifiée par un matériau matrice pour la fabrication d'un article en matériau composite. Le fil de recouvrement est éliminé avant que la préforme ne soit densifiée par le matériau matrice.

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