Carbon fibre production

Details Carbon fibre production Carbon fibre production

C - Chemistry, Metallurgy

01

B

18/9

C01B 31/02 (2006.01) D01F 6/18 (2006.01) D01F 9/22 (2006.01) D01F 11/00 (2006.01)

Patent

CA 1050222

ABSTRACT OF THE DISCLOSURE A process for the preparation of polyacrylonitrile precursor fibres and their subsequent conversion to carbon fibres, in which at least the fibre spinning process and oxygen permeation process are carried out under conditions in which particles, and so far as the spinning solution is concerned air bubbles, are excluded from the liquids employed in the spinning process and from the gases in which such process and the oxygen permeation process take place is described. Carbon fibres produced by the above process have an ultimate tensile strength which increases as the final heat treatment temperature is increased, over the whole range of final heat treatment temperatures used, for example up to about 3,000°C.

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