| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of High and Ultra-high Temperature Ceramics and Composites: Processing, Characterization and Testing
|
| Presentation Title |
Evaluating Extrusion Deposited Additively Manufactured Fiber-reinforced Thermoplastic Polymers as Carbon/Carbon Preforms |
| Author(s) |
Edwin Romero, Eduardo Barocio, Rodney W. Trice |
| On-Site Speaker (Planned) |
Edwin Romero |
| Abstract Scope |
Extrusion deposition additive manufacturing of thermoplastic polymers allows embedded fibers to be oriented locally and globally without the use of molds, enabling more control over fiber architectures, the matrix thermal history, and its microstructure. Carbon/carbon composite processing can benefit from extrusion deposition additive manufacturing but thermoplastic conversion to carbon results were needed. In this study, we analyzed several short carbon fiber-reinforced thermoplastic polymers with varying fiber contents, including polyphenylene sulfide, polyetherimide, poly sulfone, polyether sulfone, and polyether ether ketone via thermogravimetric analysis and carbonization tests to compare carbon yields and dimensional stabilities during pyrolysis. The results showed that conversion of short carbon fiber-reinforced polyphenylene sulfide into carbon/carbon composites was the most promising because of its dimensional stability. The carbonization results for an additively manufactured fiber-reinforced polyphenylene sulfide nozzle showed that slow heating rates could be used to perform shape- and size-preserving initial pyrolysis processing of more complex geometries. |