Inert substrate-bonded fluoroelastomer components and...

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 127/12 (2006.01) B29C 65/48 (2006.01) B29C 65/70 (2006.01) C09D 7/04 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2719795

Included within the scope of the invention is an article of cured fluoroelastomer composition bonded to an inert substrate. The cured fluoroelastomer composition includes a fluoropolymer, a silica, and an acrylate compound. The fluoroelas-tomer composition is bonded to the inert substrate with a bind having a bond durability of at least about 1500 pounds load at 20 °C. The inert substrate may be a metal substrate or a ketone-based polymer substrate. Also included are methods of bonding a flu-oroelastomer composition to an inert substrate that may be, for example, a metal substrate or a ketone-based polymer substrate. The methods include contacting a curable fluoroelastomer composition to an inert substrate and curing the fluoroelastomer com-position to form a bond between the composition and the inert substrate. The curable fluoroelastomer composition of the methods includes an acrylate compound, a curing agent, silica, and a fluoropolymer that comprises at least one cure site monomer.

L'invention concerne un article de composition fluoroélastomère durcie collée sur un substrat inerte. La composition de fluoroélastomère durcie comprend un fluoropolymère, une silice et un composé acrylate. La composition de fluoroélastomère est collée sur le substrat inerte par une liaison ayant une durée de vie résistant à une charge d'au moins environ 1500 livres à 20°C. Le substrat inerte peut être un substrat métallique ou un substrat de polymère à base de cétone. L'invention concerne également des procédés de collage d'une composition de fluoroélastomère sur un substrat inerte qui peut être, par exemple, un substrat métallique ou un substrat de polymère à base de cétone. Les procédés comprennent la mise en contact d'une composition de fluoroélastomère durcissable avec un substrat inerte et le durcissement de la composition de fluoroélastomère pour former une liaison entre la composition et le substrat inerte. La composition de fluoroélastomère durcissable selon les procédés comprend un composé acrylate, un agent de durcissement, de la silice et un fluoropolymère qui comprend au moins un monomère de traitement.

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