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Films, preimpregnated tapes and composites made from polyimide "salt-like" solutions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 2001 |
| Description | High quality films, preimpregnated tape (prepegs), and composites have been fabricated from polyimide precursor 'saltlike' solutions. These salt-like solutions have a low viscosity (5,000 to 10,000 cp) and a high solids content (50-65% by weight) and can be coated onto reinforcing fiber to produce prepegs with excellent tack and drape at 12-15% residual solvent (approximately 4-6% water from thermal imidization reaction). The processing of these types of prepegs significantly overcomes solvent removal problems and allows excellent fiber wet out. In addition, the physical characteristics of the polyimide precursor salt-like solutions permits processing into high-performance materials through the use of standard prepregging and composite fabrication equipment. The resultant composites are of high quality. |
| File Size | 664615 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20010054943 |
| Archival Resource Key | ark:/13960/t3jx39x77 |
| Language | English |
| Publisher Date | 2001-04-24 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Patents Composite Materials Polyimides Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
