The development of processable, fully imidized, polyimides for high-temperature applications
| Autor: | Andy Wang, Mark Southcott, James Senger, Amy Polio, Mike Amone, C H Sheppard |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Materials science
Polymers and Plastics Organic Chemistry 02 engineering and technology 021001 nanoscience & nanotechnology Matrix (mathematics) chemistry.chemical_compound 020401 chemical engineering Chemical engineering chemistry Advanced composite materials Materials Chemistry 0204 chemical engineering Composite material 0210 nano-technology Norbornene |
| Zdroj: | High Performance Polymers. 6:1-12 |
| ISSN: | 1361-6412 0954-0083 |
| DOI: | 10.1088/0954-0083/6/1/001 |
| Popis: | Novel end-capped, fully imidized polyimides have been developed as potential high-performance matrix materials for advanced composites. This study describes the synthetic development of norbornene-capped oligomers, subsequent screening of neat resin mechanical and thermo-oxidative properties and, finally, composite property evaluation. It is shown that these soluble reactive oligomers can be prepared reproducibly and give crosslinked networks that have mechanical properties more typical of thermoplastics, as well as good hot/wet and thermo-oxidative stability. Composites were prepared using a cure cycle more characteristic of thermosetting-type polyimides and it was demonstrated that fully imidized polyimides allow low-void-content laminate manufacture via autoclave processing. The evolution of imidization volatiles, which are generated using the more common PMR- and polyamic-acid-type systems, is averted using these reactive oligomers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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