Process for the production of pitch-type carbon fibers

Details Process for the production of pitch-type carbon fibers Process for the production of pitch-type carbon fibers

1988-09-19

1990-05-08

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Filaments

26421111, 425461, D01F 912

Patent

active

049236482

ABSTRACT:
A carbon fiber having a cross-sectional structure of regular mesh form orientation as observed by a polarizing microscope is produced by a method comprising melt spinning pitch material through spinning nozzles, followed by infusible treatment and carbonization, wherein a mesh filter layer is provided at an upstream portion of each nozzle, and the pitch material is passed first through the mesh filter layer and then through the nozzle for spinning.

REFERENCES:
patent: 3104419 (1963-09-01), La Forge
patent: 3475527 (1969-10-01), Chapman
patent: 3506753 (1970-04-01), Flamand
patent: 3781399 (1973-12-01), Kobayashi et al.
patent: 3847524 (1974-11-01), Mott
patent: 4376747 (1983-03-01), Nazem et al.
patent: 4511625 (1985-04-01), Nazem et al.

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