Fiber-reinforced composite material
US9580568B2 · kind B2 · utility
2Cited by
1References
7Claims
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Key dates
| Filing date | Oct 14, 2013 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Oct 14, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2377/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
There is provided a fiber-reinforced composite material is constituted by reinforcing fibers with an average fiber length of 5 mm to 100 mm and a thermoplastic resin, in which in a viscoelastic characteristic that is defined by following formulas (1) and (2), an average value in a range of −25° C. of the melting point of a matrix resin to +25° C. of the melting point of a matrix resin satisfies following formula (3):tan δ=G″/G′ (1)tan δ′=Vf×tan δ/(100−Vf) (2)0.01≦tan δ′≦0.2 (3)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.