Low density ablator compositions

Details Low density ablator compositions Low density ablator compositions

1976-01-28

1977-06-21

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 25S, 427387, 428447, C08L 8304

Patent

active

040310590

ABSTRACT:
Two types of highly filled, elastomeric silicone-base abiative compositions whose densities range from about 0.20 g/cc to about 0.30 g/cc. One type is a carbon char forming, high thermal efficiency ablator containing at least 92 percent by volume of low density filler with a total filler-to-resin volumetric ratio of at least 16 to 1. The additives comprise ground cork, silica or glass microspheres, phenolic microballons and silica and/or carbon fibers. The second type is a silica char forming, RF-transparent ablator containing at least 90 percent by volume of low density filler with a total filler-to-resin volumetric ratio of at least 11 to 1. The additives comprise silica or glass microspheres and silica fibers.

REFERENCES:
patent: 2797201 (1957-06-01), Veatch et al.
patent: 3317455 (1967-05-01), Blome et al.
patent: 3344104 (1967-09-01), Hyde
patent: 3429838 (1969-02-01), Hersh
patent: 3506607 (1970-04-01), Bobear
patent: 3623904 (1971-11-01), Ramseyer

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