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Lightweight Porous Nanostructured Ablative TPS Materials

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Lightweight Porous Nanostructured Ablative TPS Materials

 

Among porous ablative Thermal Protection System (TPS) materials, Phenolic Impregnated Carbon Ablators (PICAs), offer substantial specific weight reduction with excellent ablative properties. Firstly developed by NASA impregnating a carbon preform or Milled Carbon Fibers (MCFs) with phenolic resin, the production methods allow to obtain a low density porous material. The aim of this work was to modify the phenolic resin used to produce PICAs with nanoparticles in order to obtain a nanostructured PICA (n-PICA). Two different nanofillers were used: Multi-Walled Carbon Nanotubes (MWNTs) and nanoclays. In order to evaluate the thermal and ablative properties of n-PICAs and the synergistic effect of the two nanofillers thermal and dimensional stability and ablation resistance via oxy-acetylene torch were studied. Scanning electron microscope was used to investigate the exposed surface morphologies of the oxy-acetylene torch tested specimens in order to highlight the differences in the thermal erosion mechanisms.

 

Author: Luigi Torre

 

Conference: SAMPE Seattle 2017

 

SKU/Code: SE17--0725

Pages: 12




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