[article]
| Titre : |
Polymer nanostructured materials for high temperature applications |
| Type de document : |
texte imprimé |
| Auteurs : |
Joseph H. Koo, Auteur ; Louis Pilato, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 7-19 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Polymer nanostructured materials for high temperature applications are formed bu introducing a nanophase into several different polymer systems. These applications include fire retardant coatings, rocket propulsion insulation, rocket nozzle abrasive materials, carbon/carbon composites, and damage tolerant high performance epoxy carbon fiber reinforced composites systems. The polymer resins cinsisting of thermosets like phenolic, cyanate ester, and epoxy; thermoplastics such as Nylon 11 and poluvinyl acetate-acrylic copolymer; and thermoplastic elastomer like polyamide silicone copolymer. Using appropriate processing conditions to uniformly disperse various nanoparticleslike MMt nanoclay, nanosilica, carbon nanofiber, and POSS, nanocomposite morphology was developed within the polymer continuous phase as evidenced by WAXD, TEM, and SEM analyses. Structural property improvements due to the presence of a "nanophase" within the polymer matrix are supported by cone calorimeter data of nanomodified fire retardant coatings exhibiting delayed ignition times, reduced peak heat release rates, and synergism; reduced erosion and lower backside heat-soaked temperature for nanomodified rocket nozzle materials; enhanced thermo-oxidative resistance at intermediate temperatures of 700° to 1,200°F for nanomodified carbon/carbon composite, and improved toughened nanocomposite epoxy carbon fiber reinforced polymer matrix system. |
| Note de contenu : |
- Processing of nanoparticles into polymers
- Types of polymers
- Analyses
- Selection of nanoparticles
- Fire-retardant nanocomposite coatings
- Nanostructured materials for propulsion systems
- Nanocomposite rocket ablative materials (NRAM)
- Nanomodified carbon/carbon composites (NCCC)
- Damage tolerant high performance epoxy system |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23222 |
in SAMPE JOURNAL > Vol. 41, N° 2 (03-04/2005) . - p. 7-19
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