Inorganic whisker containing impact enhanced prepregs and formulations formulations
US4992325A · kind A · utility
9Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1987 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Dec 15, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3545
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A prepeg formulation comprising prepreg filament fibers unidirectionally aligned, and/or woven and nonwoven fabrics, a thermosetting matrix resin and a small amount of well dispersed inorganic whiskers in the resin, alone or in combination with extremely fine fibers of a thermoformable polymer having at least one of a T.sub.m or T.sub.g greater than about 300.degree. C. or no T.sub.m or T.sub.g and a decomposition temperature greater than about 300.degree. C. The preferred matrix resin is a blend of a thermosetting epoxy resin and an amorphous thermoplastic polymer having a T.sub.g greater than about 195.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.