D - Textiles – Paper – 02 – G
Patent
D - Textiles, Paper
02
G
D02G 3/16 (2006.01) C04B 35/83 (2006.01)
Patent
CA 2221929
A yarn is formed from discontinuous parallel fibers which are not twisted and which are held together by a covering yarn of sacrificial material wound around the fibers. The fibers comprise an intimate mixture of fibers of at least two different natures selected from carbon fibers or pre-oxidized polyacrylonitrile based carbon precursor fibers, or anisotropic or isotropic pitch based carbon precursor fibers, or phenolic or cellulosic based carbon precursor fibers, and ceramic fibers or ceramic precursor fibers. The mixture of fibers comprises, in its carbon state, at least 15% by weight of high strength fibers, having a tensile strength of at least 1500 MPa and a modulus of at least 150 MPa, and at least 15% by weight of fibers with a low Young's modulus of at most 100 GPa.
Le fil est formé de fibres (14) discontinues parallèles entre elles et non retordues maintenues au moyen d'un fil de guipage (16) en une matière fugitive enroulé autour des fibres (14). Les fibres (14) comprennent un mélange intime d'au moins deux natures différentes de fibres choisies parmi des fibres de carbone ou de précurseur de carbone à base polyacrylonitrile préoxydé, ou brai anisotrope ou brai isotrope, ou phénolique, ou cellulosique, et des fibres en céramique ou en précurseur de céramique. Le mélange de fibres comprend à l'état carboné, au moins 15 % en poids de fibres haute résistance, ayant une résistance en traction au moins égale à 1500 MPa et un module au moins égal à 150 MPa, et au moins 15 % en poids de fibres bas module de Young au plus égal à 100 GPa.
Coupe Dominique
Duval Renaud
Olry Pierre
Zerdouk Amina
Sim & Mcburney
Snecma Propulsion Solide
Societe Europeenne de Propulsion
LandOfFree
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