Accession Number : ADD012742

Title :   A Processing Method for Increasing Propellant Burning Rate.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Sayles,David C

Report Date : 07 Apr 1987

Pagination or Media Count : 3

Abstract : The effectiveness of the burning rate accelerator, iron oxide (Fe2O3), is enhanced, and a markedly improvement in the mechanical properties of a propellant composition are simultaneously achieved as a result of grinding a composite propellant paste in a roller mill instead of in a conventional sigma blade propellant mixer. The propellant paste is composed of a hydroxyl-terminated polybutadiene prepolymer, fluid-energy mill-ground ammonium perchlorate, dioctyl adipate, aluminum oxide, isophthaloyl bis-1-(2-methylaziridine), and iron oxide. The final product has a higher stress capability, higher strain capability, higher modulus, and higher gel fraction, and a burning rate that is about 80% higher as compared with sigma blade propellant ground and mixed propellant.

Descriptors :   *PATENTS, *BURNING RATE, *COMPOSITE PROPELLANTS, *PATENTS, ALUMINUM OXIDES, PARTICLE ACCELERATORS, STRAINS(BIOLOGY), STRAIN(MECHANICS), HYDROXYL RADICALS, POLYBUTADIENE, MECHANICAL PROPERTIES, PROCESSING, COMPOSITION(PROPERTY), PROPELLANTS, BLADES, STRESSES, IRON OXIDES, MIXING, ROLLERS

Subject Categories : Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE