Long-fiber-reinforced thermoplastic resin preform and fiber-reinforced resin compact using same
US9416235B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2012 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Dec 4, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2300/22
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a long-fiber-reinforced thermoplastic resin preform including glass fibers excellent in strength and modulus of elasticity and easily produced and a long-fiber-reinforced resin compact excellent in strength and modulus of elasticity. The long-fiber-reinforced thermoplastic resin preform is produced by cutting to a predetermined length glass fiber bundles impregnated with a thermoplastic resin and holding the thermoplastic resin around the glass fiber bundles, and includes the glass fiber bundles as long fiber bundles. The glass fiber bundles are formed by bundling glass fibers. The glass fibers have a composition wherein the content of SiO2 is 57.0 to 63.0% by mass, the content of Al2O3 is 19.0 to 23.0% by mass, the content of MgO is 10.0 to 15.0% by mass and the content of CaO is 5.5 to 11.0% by mass, and the ratio MgO/CaO is 0.8 to 2.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.