Tubular carbon fiber reinforced composite material and golf club shaft
US9931552B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2016 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Jan 13, 2036 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2101/40
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Provided are tubular carbon fiber reinforced composite material and having excellent cylindrical bending strength and a golf club shaft using the same. This tubular carbon fiber reinforced composite material is formed by laminating and curing a straight layer and a bias layer. The straight layer comprises carbon fibers S coated with a sizing agent S and arranged in parallel in a direction of −20° to +20° with respect to the axis of the tubular body, and contains a thermosetting resin S. The bias layer comprises carbon fibers B coated with a sizing agent B and arranged in parallel in a direction of +25° to +65° with respect to the axis of the tubular body, and contains a thermosetting resin B. The carbon fiber reinforced composite material constituting the bias layer has an interlaminar shear strength of not less than 110 MPa. A cured product of the thermosetting resin S has an elastic modulus of not less than 4.0 GPa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.