C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 95/00 (2006.01) C04B 35/532 (2006.01)
Patent
CA 2180081
Filled thermoplastic pitch comprising particulate filler such as carbon fiber, coke flour, powdered graphite or the like, in combination with advanced mesophase pitch having a TMA deformation temperature of at least 400°C, and a method for the manufacture thereof. The filled pitch may be shaped and densified in forming operations, and is particularly useful in providing shaped preforms for carbon-carbon composites. The thermoplastic preform may be thermoset and carbonized in conventional carbonizing operations without the use of molds and pressurized vessels.
Brai thermoplastique chargé de matières particulaires comme la fibre de carbone et une poudre de coke ou de graphite, ou d'un autre produit analogue combinées à un brai mésomorphe de pointe ayant une température de déformation (ATM) d'au moins 400 degrés C, et une méthode de fabrication dudit brai. Le brai chargé peut être formé et densifié par formage; il est aussi particulièrement utile dans la fabrication de préformes de composites carbone-carbone. La préforme thermoplastique peut être soumise à un thermodurcissement et à une carbonisation classique, sans l'utilisation de moules ni d'enceinte pressurisée.
Orient David Thomas
Singer Leonard Sidney
Amoco Corporation
Bp Corporation North America Inc.
Gowling Lafleur Henderson Llp
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