Polyimide resins for high temperature wear applications

Details Polyimide resins for high temperature wear applications Polyimide resins for high temperature wear applications

C - Chemistry, Metallurgy

08

L

C08L 79/00 (2006.01) C08K 3/00 (2006.01) C08K 3/34 (2006.01) C08L 79/08 (2006.01)

Patent

CA 2731172

Polyimide resin compositions that contain an aromatic polyimide, graphite and a sepiolite filler, or a mixture of a sepiolite filler and a kaolin filler, are found to exhibit low wear and high thermal oxidative stability Such compositions are especially useful m molded articles that are exposed to wear conditions at high temperatures such as aircraft engine parts.

L'invention porte sur des compositions de résine de polyimide qui contiennent un polyimide aromatique, du graphite et une charge de sépiolite, ou un mélange d'une charge de sépiolite et d'une charge de kaolin. Ces compositions sont trouvées manifester une faible usure et une stabilité élevée à l'oxydation thermique. De telles compositions sont particulièrement utiles dans des articles moulés qui sont exposés à des conditions d'usure à des températures élevées, tels que des pièces de moteur d'avion.

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