An improved ignition and/or booster composition contains a boron-containing constituent such as boron carbide or a metal boride, and, an oxidizer such as potassium perchlorate. A gas generator and a vehicle occupant protection system containing the composition are also included.
대표청구항▼
1. A composition comprising: a boron-containing compound selected from the group consisting of boron carbide, a metal boride, or a mixture thereof;an oxidizer selected from the group consisting of at least one metal nitrate, metal nitrite, metal perchlorate, metal chlorate, metal oxide, and mixtures
1. A composition comprising: a boron-containing compound selected from the group consisting of boron carbide, a metal boride, or a mixture thereof;an oxidizer selected from the group consisting of at least one metal nitrate, metal nitrite, metal perchlorate, metal chlorate, metal oxide, and mixtures thereof; anda secondary fuel, wherein said secondary fuel is selected from the group consisting of tetrazoles, triazoles, carboxylic acids, hydrazides, triazines, urea derivatives, guanidines, salts thereof or mixtures thereof; wherein the composition is free of ammonium nitrate and ammonium perchlorate. 2. The composition of claim 1, wherein the boron-containing compound is provided at 5-30 weight percent of the total composition. 3. The composition of claim 1 wherein the boron-containing compound selected from the group consisting of a metal boride comprising titanium boride, tungsten boride, magnesium boride, nickel boride, or a mixture thereof. 4. The composition of claim 1, wherein the boron-containing compound comprises boron carbide. 5. The composition of claim 1, wherein the oxidizer is provided at 40-95 weight percent of the total composition. 6. The composition of claim 1, wherein the oxidizer comprises potassium nitrate. 7. The composition of claim 1, wherein the secondary fuel is provided at 0.1-30 weight percent of the total composition. 8. The composition of claim 1 wherein said secondary fuel is selected from the group consisting of mono-ammonium bis-tetrazole amine, 5-aminotetrazole, guanidine nitrate, d,1-tartaric acid, nitroguanidine, 5,5′-bis-1H-tetrazole, di-ammonium salt of 5′5-bis-1H-tetrazole, ammonium dinitrosalicylic acid, and mixtures thereof. 9. A gas generator comprising the composition of claim 1. 10. A vehicle occupant protection system comprising the composition of claim 1. 11. The composition of claim 1, wherein the boron-containing compound is provided at 10-30 weight percent of the total composition. 12. The composition of claim 11, wherein the boron-containing compound is boron carbide. 13. The composition of claim 11, wherein the oxidizer is provided at 70-90 weight percent of the total composition. 14. The composition of claim 11, wherein said oxidizer is selected from the group consisting of potassium perchlorate, potassium nitrate, and mixtures thereof. 15. A gas generator containing the composition of claim 11. 16. A vehicle occupant protection system containing the composition of claim 11.
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이 특허에 인용된 특허 (6)
Shaw, Anthony P.; Poret, Jay C.; Csernica, Christopher M., Boron carbide pyrotechnic time delay.
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