Method of increasing the strength and fatigue resistance of fiber reinforced composites
US6306320A · kind A · utility
2Cited by
20References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1999 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Jul 29, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1376
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of increasing the amount of entrained vapor in fiber-reinforced resin composite materials, and in particular filament wound composites, wherein a particularly effective chemical foaming or blowing agent is incorporated into the resin matrix composition used to form the composites. The foaming agent creates vapor-filled voids throughout the resin matrix of the composite as it cures. The superior composites containing these vapor-filled voids demonstrate high burst strength retention and excellent resistance to cyclic fatigue. The invention also relates to composite materials and articles thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.