Char Strength Characterization of Glass Phenolic Ablatives and Graphite
This papers details the experimental methods used to measure various properties relevant to the performance of ablative materials. The materials tested were fine grain graphite, and two glass-phenolic ablatives, including MXBE-350 (rubber modified glass-phenolic) and MXB-360 (glass-phenolic) manufactured by Cytec-Solvay. Such properties observed in this paper includes mass loss, erosion rate, heat-soaked temperature, compression char strength, and shear char strength. High definition images and infrared images were also recorded to observe the changes undergone during experimentation. The results from the experiment showed that graphite is superior in terms of structural integrity, however it fails to provide the same level of heat protection as the two glass-phenolic materials. MXBE-350 proved to be the best material in terms of insulation, although it does not hold up structurally like MXB-360.
Author: Joel Mendez
Conference: SAMPE Seattle 2017