Method of bonding a hydrogenated nitrile rubber composition...

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

400/4224, 18/949

C08L 9/04 (2006.01) B29C 70/02 (2006.01) B32B 25/02 (2006.01) C08J 5/06 (2006.01) C08L 15/02 (2006.01) C08L 61/14 (2006.01)

Patent

CA 2034873

The present invention is directed to a method wherein fibers are treated with a first, second, and third treatment solution. The third treatment solution includes a chlorinated rubber and a rubber-containing composition having acrylonitrile-butadiene rubber or hydrogenated acrylonitrile-butadiene rubber. The treated fibers are positioned contiguous, and adhered, to an unvulcanized hydrogenated acrylonitrile-butadiene rubber composition which is then vulcanized. The resulting rubber-fiber composite exhibits improved adhesion between the hydrogenated acrylonitrile-butadiene rubber composition and the fibers. Adhesion is maintained in a hot environment even if subjected to what would conventionally be considered conditions that would result in thermal deterioration under high temperature. Thus, the rubber-fiber composite exhibits enhanced durability under the severe service conditions experienced by rubber-fiber composites.

La présente invention concerne une méthode au cours de laquelle des fibres sont traitées à l'aide d'une première, d'une deuxième et d'une troisième solutions de traitement. La troisième solution de traitement comprend un caoutchouc chloré et une composition contenant du caoutchouc sous forme de caoutchouc acrylonitrile-butadiène ou de caoutchouc acrylonitrile-butadiène hydrogéné. Les fibres traitées sont placées en position contiguë, et collées sur une composition de caoutchouc acrylonitrile-butadiène hydrogéné non vulcanisé, qui est ensuite vulcanisé. Le composite caoutchouc-fibre obtenu présente une adhésivité améliorée entre la composition de caoutchouc acrylonitrile-butadiène et les fibres. L'adhésivité persiste dans un environnement chaud, même si on soumet ce composite à des conditions que l'on pourrait considérer habituellement comme des conditions conduisant à une détérioration thermique à haute température. Ce composite caoutchouc-fibre possède donc une durabilité améliorée dans les conditions d'utilisation intense auxquelles il est soumis.

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