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US 2026/0184889 A1Published application
Elastic heat-resistant composition with minimal discharge including alkali metal salts
AssigneeAgency for Defense Development
InventorsJinho HYON, Seung Won KO
Life of this patent
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Abstract
An elastic heat-resistant composition for solid propellant rocket motors is provided, the composition minimizing discharge by including an alkali metal salt.
Claims8
A clean-burn elastic heat-resistant composition, comprising:
- a rubber base material;
- an additive comprising an alkali metal salt;
- and
- a vulcanizing agent,
- wherein the alkali metal salt is one or a combination of two or more selected from the group consisting of calcium oxalate, magnesium hydroxide, ammonium sulfate, ammonium benzoate, and magnesium sulfate,
- wherein the alkali metal salt is present in an amount of 15 to 70 phr based on the rubber base material,
- wherein the vulcanizing agent is selected entirely from the group consisting of an ester of saturated fatty acids, zinc oxide (ZnO), stearic acid, RD (2,2,4-trimethyl-1,2-hydroquinoline), DM (dibenzothiazole disulfide), TRA (dipentamethylene thiuram tetrasulfide), sulfur(S), and PVI (N-(cyclohexylthio) phthalimide), and
- wherein the clean-burn elastic heat-resistant composition is used to suppress nozzle blockage and suppress damage to a combustion chamber of a solid propellant rocket motor for a space launch vehicle.
5 more elements
Dependencies are inferred from the claim text.