A lightweight ablator formulation has been developed which offers superior thermal performance compared to current state of the art ablator formulations. The lightweight ablator formulations described herein typically include at least one endothermically decomposing (energy absorbing) material with a fluxing agent resulting in significantly reduced backface temperature response and a more stable surface. According to one implementation the ablator composition comprises about 30 to about 70 percent by weight of a base silicone resin, about 25 to about 67 percent by weight of a low-density filler, about 3 to about 7 percent by weight of a curing agent and greater than 0 and up to about 10 percent by weight of a boron-containing compound.
High efficiency erosion resistant silicone ablator composition
2016-10-04
Patent
Elektronische Ressource
Englisch
IPC: | C09D Überzugsmittel, z.B. Anstrichstoffe, Firnisse oder Lacke , COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS / B64G Raumfahrt , COSMONAUTICS / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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