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Accession Number:
AD0483967
Title:
New Ablative Plastics and Composites, Their Formulation and Processing. Part 1
Descriptive Note:
Summary rept. Feb 1965-1966
Corporate Author:
HUGHES AIRCRAFT CO CULVER CITY CA AEROSPACE GROUPS
Report Date:
1966-04-01
Pagination or Media Count:
76.0
Abstract:
Precise processing techniques were used in preparing new ablative plastic composites. This research involved the use of novel heat resistant resins such as cross-linked, branched polyphenylenes para-polyphenylenes, an amide-blocked polybenzimidazole, a phosphonitrilic-modified phenolic, a carborane and a polyimide. Novel materials used as reinforcements included boron fibers, boron nitride fibers, fused silica fabric coated with pyrolytic graphite, polybenzimidazole fibers, rayon-silica fabric, carbon-silica fabric, sapphire wool fibers and silicon carbide fibers. Resin impregnation techniques used in preparing research specimens included spatula coating, dip coating, machine coating in a laboratory treater, Buchner funnel impregnation and dry powder layup. Research specimens were prepared in various geometric configurations depending on their intended ablative characterization. Test specimen geometries included small pellets 34-in. dia by 12-in. thick for hyperthermal reentry screening, subscale rocket nozzles for solid- and liquid-propellant rocket motor screening and hot-gas flow specimens for channel-type hyperthermal tests.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
