msepostdoc-list Preliminary Exam Seminar, December 6, Monday, 9:30 AM

[Morgan, Yuan-Yu Karen]

Please consider attending this seminar:

MATERIALS ENGINEERING
SEMINAR

"Polymer Infiltration and Pyrolysis Processing of Carbon/Carbon Composites"

By

Edwin Romero
Purdue MSE Preliminary Exam


Advisor: Professor Rodney Trice


ABSTRACT


The low density and high thermostability of bulk carbon make carbon fiber-reinforced carbon matrix composites a good candidate for hypersonic applications. To obtain a pure carbon matrix, a polymer matrix composite is thermally decomposed in an oxygen-free atmosphere, resulting in weight loss and a porous matrix structure. The thermomechanical properties of the porous composite can be improved using polymer infiltration and pyrolysis (PIP) processing, where infiltration and conversion of a secondary polymer causes a carbon build-up on pore walls. This simultaneously decreases the total pore volume and increases the carbon matrix density, but since a portion of the secondary polymer is gasified, some residual porosity is left behind. As a result, several cycles of PIP are needed to obtain bulk densities >90%. This review focuses on some aspects of infiltration for carbon/carbon composites that have been used to reduce densification cycles.







Date: December 6, 2021

Time: 9:30 AM
Place: https://purdue.webex.com/meet/rtrice





Yuan-Yu Karen Morgan,Ph.D.
Academic Advisor-Graduate Program
School of Materials Engineering
Neil Armstrong Hall of Engineering, Room 2217
765-494-4103
ymorgan at purdue.edu<mailto:ymorgan at purdue.edu>

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