New Ablative Plastics and Composites, Their Formulation and Processing. Part 1
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 (3/4-in. dia by 1/2-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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1966
- Accession Number
- AD0483967
Entities
People
- Boyce G. Kimmel
- George Schwartz
Organizations
- Hughes Aircraft Company