Process for producing stabilized yarn for producing carbon fiber

Details Process for producing stabilized yarn for producing carbon fiber Process for producing stabilized yarn for producing carbon fiber

1986-06-12

1989-03-21

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

Work is organic material

264 85, 264 292, 2642905, 2642907, 264234, 264345, 264 401, D02J 1300

Patent

active

048141291

ABSTRACT:
A process for producing a stabilized yarn for producing a carbon fiber is disclosed. It includes a step for thermally stabilizing a yarn by travelling a continuous fiber through the heated inside of a thermal stabilization furnace. The yarn stabilizing step is characterized in that a tension applied to the continuous fiber at a final stage of stabilizing process is higher than that applied to the continuous fiber at an initial stage of stabilizing process. An apparatus for carrying out the process is also disclosed. According to the present invention, a thermal stabilization fiber having a higher strength and a finer radius can be produced.

REFERENCES:
patent: 4100004 (1978-07-01), Moss et al.
patent: 4534919 (1985-08-01), McAliley et al.
patent: 4609540 (1986-09-01), Izumi et al.

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