Cured polyimide foam structures and their production
US4898763A · kind A · utility
4Cited by
8References
39Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 26, 1989 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | May 26, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31721
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A body of cured polyimide foam is treated with steam to produce a non-flexible, non-resilient cellular structure. A molding member is impressed into this structure to a depth less than the full thickness of the structure. The structure is then cured to polyimide foam with the molding member removed therefrom either before, during or after the curing has been completed. The resultant articles, which may be laminated, are useful as panels to dampen vibration and sound, and to provide thermal insulation. In addition the articles are flame resistant and flexible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.