Carbon fibers and process for producing the same
US4452860A · kind A · utility
22Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1983 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Jan 24, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2918
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In the course of producing acrylic fibers, the spun filament bundle before the heat stretching treatment is subjected to a special stretching treatment in a warm water bath under a specific condition so that the degree of filament separability of said spun filament bundle traveling through the heat stretching step will be maintained within a prescribed range, and when the acrylic fibers so prepared are heat-treated for carbonization, carbon fibers representing a peculiar load-elongation behavior can be produced in an industrially advantageous manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.