Thermally stabilized polyacrylonitrile polymers for carbon...

Details Thermally stabilized polyacrylonitrile polymers for carbon... Thermally stabilized polyacrylonitrile polymers for carbon...

D - Textiles, Paper

01

F

18/9

D01F 9/22 (2006.01)

Patent

CA 2009546

Disclosed is a process for manufacturing carbon fiber in which a polyacrylonitrile polymer in the form of a multitude of filaments is heated in an atmosphere that is substantially free of oxygen to form a thermally stabilized carbon fiber precursor in an oxygen-containing atmosphere to form a stabilized and oxidized precursor and then the thermally- stabilized precursor is heated in an oxygen-containing atmosphere to oxidize the precursor, which is then conventionally carbonized in an atmosphere substantially free of oxygen.

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