| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
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Preceramic Polymers; Synthesis, Processing, Modeling, and Derived Ceramics
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| Presentation Title |
Metal-coordinated Preceramic Polymer Hairy Nanoparticles for Ultra-high Temperature Structural Materials |
| Author(s) |
Maria Parvulescu, Kara L Martin, Christina M. Thompson, Matthew B Dickerson |
| On-Site Speaker (Planned) |
Kara L Martin |
| Abstract Scope |
Ceramics matrix composites (CMCs) and ultra-high temperature ceramics (UHTCs) are vital structural materials for hotter, more efficient engines and turbines. Their use is hampered by many issues including how to make novel, more processable materials. Preceramic polymers (PCPs) are used in an infiltration-pyrolysis process to make CMCs. Limitations include the number of cycles required due to volume shrinkage and cracking, and the small number of UHTC-producing PCPs. Preceramic polymer hairy nanoparticles (PCP HNPs) composed of an inorganic core and organic corona reduce the number of cycles and have improved rheology. Our first generation PCP-HNPs had the core and corona covalently attached, and our second-generation explores attachment via metal-coordination. The structure and rheological properties and the inclusion of metals gives tailorable materials for structural applications, and expands their use for UHTCs. Synthesis and characterization of PCP HNPs and their ceramic progeny will be discussed and compared to our first-generation PCP-HNPs. |