Exploring composites based on PPO blend as ablative thermal protection systems – Part II: The role of equiaxial fillers

Similarly to the activity described in Part I, the PPO-based composites were studied in view of their pre-screening as potential candidates in innovative ablative shields. In this case equiaxial, oxide and non-oxide powders, precisely magnesium aluminate spinel, aluminum hydroxide (boehmite), δ- and...

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Bibliographic Details
Published in:Composite structures 2012-02, Vol.94 (3), p.1060-1066
Main Authors: Fino, P., Lombardi, M., Antonini, A., Malucelli, G., Montanaro, L.
Format: Article
Language:English
Subjects:
Ablation
Ablative materials
Alumina hydrate
Ceramic filler
Combustion
Fillers
Intermetallics
Molybdenum disilicides
Polymer–matrix composites (PMCs)
Silicon carbide
Thermal properties
Thermal protection
Thermoplastic resin
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Summary:Similarly to the activity described in Part I, the PPO-based composites were studied in view of their pre-screening as potential candidates in innovative ablative shields. In this case equiaxial, oxide and non-oxide powders, precisely magnesium aluminate spinel, aluminum hydroxide (boehmite), δ- and α-alumina, silicon carbide, silicon nitride and molybdenum disilicide, were used as fillers. Nanometric and micrometric α-alumina and silicon carbide powders were exploited to investigate the effect of the particle size. The alumina-based composites presented the most promising behavior. On the other hand, molybdenum disilicide implied a significant decrease in thermal stability and combustion time.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2011.10.020