Process for manufacturing pitch-type carbon fiber
US5968435A · kind A · utility
1Cited by
3References
5Claims
0Family size
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Key dates
| Filing date | Apr 23, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Apr 23, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F9/15
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.