Carbon fiber prepeg for wood reinforcement, wooden sheet laminated therewith, wood reinforcing composite comprising carbon fibers and the wooden sheet, and carbon fiber reinforced wood
US6287677A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 14, 1998 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Sep 14, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31989
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The first group of the present invention is a wood reinforcing carbon fiber prepreg, which is produced through impregnation with a mixture resin at a viscosity of 3 to 150 poises at 20.degree. C., wherein the mixture resin contains one or more resins selected from resorcinol based resins and resol type phenol based resins, formaldehydes as curing agents and inorganic acids or organic acids as curing catalysts. The first group of the present invention is a wood reinforcing carbon fiber prepreg having a longer usable time and being capable of imparting the rigidity and elastic modulus of carbon a fiber to the wood to be reinforced at a high ratio. The second group of the present invention is a wood reinforcing carbon fiber prepreg attached wood based sheet, wherein a wood based sheet of a thickness of 0.01 mm to 0.06 mm is arranged on at least one face of a carbon fiber prepreg sheet produced through impregnation with a mixture resin containing a thermosetting resin and a curing agent or a curing catalyst. The second group of the present invention is a carbon fiber prepreg sheet, or a carbon fiber prepreg attached wood based sheet produced through the attachment of the strand, or a c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.