Process for preparing precursor pitch for carbon fibers

Details Process for preparing precursor pitch for carbon fibers Process for preparing precursor pitch for carbon fibers

C - Chemistry, Metallurgy

10

C

196/36

C10C 3/00 (2006.01) D01F 9/145 (2006.01)

Patent

CA 1196304

ABSTRACT A precursor pitch for the production of carbon fibers is obtained by heat-treating a carbonaceous pitch in the form of a thin film having a thickness not larger than 5 mm at a temperature in the range of 250° to 390°C and under a reduced pressure not higher than 100 mmHg. By melt-spinning this precursor pitch and subjecting the resultant pitch fiber to infusiblization and carboniza- tion and, if required, to subsequent graphitization, there is obtained a high quality carbon fiber.

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