Method for the preparation of carbon fiber from polyolefin fiber precursor, and carbon fibers made thereby
US9096955B2 · kind B2 · utility
1Cited by
30References
25Claims
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Key dates
| Filing date | Sep 27, 2012 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | Sep 28, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2918
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Methods for the preparation of carbon fiber from polyolefin fiber precursor, wherein the polyolefin fiber precursor is partially sulfonated and then carbonized to produce carbon fiber. Methods for producing hollow carbon fibers, wherein the hollow core is circular- or complex-shaped, are also described. Methods for producing carbon fibers possessing a circular- or complex-shaped outer surface, which may be solid or hollow, are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.