Prepreg and method for manufacturing same
US10047478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2012 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Dec 16, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2049
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a prepreg comprising: a primary pre-pregnant made of a reinforced fiber substrate and an epoxy resin composition containing at least epoxy resin and thermoplastic resin impregnated into the reinforcing fiber that forms the reinforced fiber substrate; and a surface layer made of epoxy resin composition containing at least an epoxy resin and an epoxy resin-soluble thermoplastic resin that dissolves in the epoxy resin, the surface layer being formed on one or both surfaces of the primary prepreg; the prepreg being characterized in that only one of either the epoxy resin composition of the primary prepreg or the epoxy resin composition of the surface layer contains a hardening agent for an epoxy resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.