Method of electrochemically surface treating carbon fibers, fibers treated by the method, and composite materials including such fibers
US4690738A · kind A · utility
5Cited by
5References
9Claims
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Key dates
| Filing date | May 10, 1985 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | May 10, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31511
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of electrochemically surface-treating carbon fibers, fibers treated by the method, and composite materials including such fibers. The method consists in positively polarizing fibers relative to a cathode in an aqueous solution of an electrolyte constituted by a weak amino base. Nitrogen-containing groups are thus fixed to the surface of the fibers thereby improving the adhesion of the fibers to the resin in a composite material constituted by carbon fibers embedded in a synthetic resin matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.