Silicone resin based composites interleaved for improved...

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B32B 27/04 (2006.01) B05D 1/02 (2006.01) B05D 1/36 (2006.01) B05D 3/02 (2006.01) B29C 70/06 (2006.01) B32B 5/26 (2006.01) B32B 9/04 (2006.01) C08J 5/04 (2006.01) H05K 1/03 (2006.01)

Patent

CA 2477948

Fiber reinforced silicone matrix resin based composites are made more resistant to delamination by incorporating a suitably tough, lower modulus silicone resin, different from said matrix resin, between each fiber layer of the composite. Preferably, woven mats of glass or carbon fibers impregnated with a desired silicone matrix resin are coated with a precursor of the tougher interleaf silicone resin. The resulting laminate of alternating matrix resin-fiber layers and interleaved layers of the tougher silicone resin provides a tougher silicone based composite.

La présente invention concerne des matières composites à base de résine silicone matricielle renforcée par fibres, rendues plus résistantes à la déchirure grâce à l'incorporation d'une résine silicone à faible module et résistance suffisante, différente de ladite résine matricielle, entre toutes les couches de la matière composite. De préférence, des couches tissées de fibres de verre ou de carbone imprégnées d'une résine silicone matricielle désirée sont revêtues d'un précurseur de la résine silicone intercalaire de résistance supérieure. Le laminé résultant formé de couches alternées fibres-résine matricielle et de couches intercalaires de résine silicone de résistance supérieure permettent d'obtenir une matière composite à base de silicone de résistance supérieure.

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