Stampable glass fiber reinforced thermoplastic resin and method of producing the same
US5529808A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Aug 15, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J5/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A glass fiber reinforced polymer which excels in mechanical properties and is suitable for use in a large-sized structural members, formed from a dispersion liquid by dispersing reinforcement glass fibers and particulate thermoplastic resin in a surfactant-containing aqueous medium in which bubbles of air are dispersed, forming a sheet-like web on a porous support plate, and applying heat and pressure to form a sheet. The reinforcement glass fibers include a silane coupling agent while the matrix resin has functional groups bonded to the silane coupling agent. The concentration of said functional groups is higher in the regions adjacent the surfaces of said reinforcement glass fibers than in regions farther removed therefrom, and said concentration progressively decreases in the direction away from said reinforcement glass fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.