Process for manufacturing pitch-type carbon fiber
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United States of America Patent
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Oct 19, 1999
Grant Date -
N/A
app pub date -
Apr 23, 1998
filing date -
Apr 24, 1997
priority date (Note) -
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Abstract
In a step of spinning a molten mesophase pitch in a process for manufacturing a pitch-type carbon fiber, the pitch is allowed to pass through an orifice and to be contracted once, is then expanded in an introduction port with a diameter greater than that of the orifice, and is then allowed to pass through an outlet pore formed at a collecting portion to spin the pitch. The pitch-type carbon fiber has a high elastic modulus in tension and high compressive strength.
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