Carbon fiber composite material
US9850368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2013 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Jul 16, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/004
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A carbon fiber composite material includes the material is made of carbon fibers and a thermoplastic resin; the proportion Y, relative to the total weight of carbon fibers, of carbon fiber bundles for which Mn/(Ln×D) is 8.5×10−1 (mg/mm2) or more, is 30≦Y<90 (wt %); the average value X of Mn/Ln for the carbon fiber bundles is 1.1×10−2≦X≦8.1×10−2 (mg/mm); and Y satisfies Y≧100X+30, wherein Mn: weight of carbon fiber bundles, Ln: fiber length of carbon fibers, D: fiber diameter of carbon fibers. The carbon fiber composite material combines high flowability and mechanical properties, has few variations in mechanical properties and shows an excellent adaptability of carbon fibers for small parts such as ribs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.