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NASA NTRS · 20260008453

In Situ Synchrotron Micro-CT of Microballoon-Filled RTV Silicone During Thermal Decomposition

Spencer Dansereau·Shreya Pokharel·Sreevishnu Oruganti·Eli Hiss·Brody Bessire·Sergio Fraile Izquierdo·Claire Kent·Luis Chacon·Sebastian Colom·Henry Boesch·Liz Clark·Dula Parkinson·Austin Yunker·Andrew Santos·Kyle Watson·Francisco Lopez Jimenez·Savio Poovathingal·David Marshall·Lauren Abbott
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Abstract

This work investigates the thermal decomposition of microballoon-filled room-temperature-vulcanizing (RTV) silicone using time-resolved synchrotron micro-CT at the Advanced Light Source. In situ imaging of constrained and unconstrained samples captures the evolution of the internal microstructure during heating, including material expansion, microballoon and void growth, tearing, pyrolysis, shrinkage, and increasing porosity. The measurements provide new insight into the mechanisms governing RTV degradation and generate three-dimensional data for future quantitative analysis and material-response model development.

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TPSPyrolysisSynchrotronMicroballoonMicro-CTRTV

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Spencer Dansereau, Shreya Pokharel, Sreevishnu Oruganti, Eli Hiss, Brody Bessire, Sergio Fraile Izquierdo, Claire Kent, Luis Chacon, Sebastian Colom, Henry Boesch, Liz Clark, Dula Parkinson, Austin Yunker, Andrew Santos, Kyle Watson, Francisco Lopez Jimenez, Savio Poovathingal, David Marshall, Lauren Abbott. In Situ Synchrotron Micro-CT of Microballoon-Filled RTV Silicone During Thermal Decomposition. https://ntrs.nasa.gov/citations/20260008453

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