Accession Number : ADD009119

Title :   Liner-Barrier for Ultrahigh Burning Rate Propellants.

Descriptive Note : Patent,


Personal Author(s) : Sayles,David C

Report Date : 08 Dec 1981

Pagination or Media Count : 4

Abstract : A highly effective liner-barrier is disclosed for use with carborane-containing ultrahigh burning rate propellants. The liner-barrier includes a resinous matrix selected from an epoxy, polysulfide, and a near neutral phenolic resinous liner-barrier composition, and a leafing aluminum flake incorporated therein. When this liner-barrier is applied to the surface of a rocket motor case, or insulation when used, the leafing aluminum flake floats to a region near the surface of the resin. the liner-barrier is cured to yield a leafing aluminum flake sub-surface layer which markedly reduces the permeability of the linear-barrier by the carboranyl burning rate catalysts which results from the migration or diffusion of the carborane from the propellant. The ultrahigh burning rate propellant is compatible with and forms a secure bond to the liner-barrier. these requirements of compatibility and forming a secure bond are essential for the field of use. (Author)

Descriptors :   *Patents, *Combustion chamber liners, *Rocket engine cases, *Solid propellant rocket engines, *Rocket propellant grains, Inventions, Barriers, Linings, Migration, Carboranes, Carboranyl radicals, Aluminum, Composite materials, Epoxy resins, Phenolic plastics, Polysulfides

Subject Categories : Solid Propellant Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE