Gas generant igniter coating materials and methods
First Claim
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1. An ignition material comprising:
- finely divided particulates of metal fuel, the metal fuel being reactive with fluorine moieties of a fluoropolymer, finely divided oxidizer particulates, and a fluoropolymer binder in which the finely divided particulates of metal fuel and the finely divided oxidizer particulates are substantially uniformly distributed.
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Abstract
Gas generant grains, such as tablets, granules or particulates, are coated with a dispersion of oxidizer particulates, metal fuel particulates, a fluoropolymer binder with which at least a portion of the metal fuel is reactive, and a solvent for the fluoropolymer.
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Citations
27 Claims
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1. An ignition material comprising:
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finely divided particulates of metal fuel, the metal fuel being reactive with fluorine moieties of a fluoropolymer, finely divided oxidizer particulates, and a fluoropolymer binder in which the finely divided particulates of metal fuel and the finely divided oxidizer particulates are substantially uniformly distributed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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- 18. An ignition material useful for coating a gas generant material substrate, the ignition material comprising oxidizer particulates, fuel particulates comprising metal fuel, and a fluoropolymer reactive with the metal fuel, the fluoropolymer being present at a level of between about 1 and about 5 wt. % of the ignition material.
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23. A method of coating a gas generant material to provide an adherent ignition material film thereon;
- the method comprising,
dissolving a fluoropolymer in a solvent to form a fluoropolymer solution, dispersing particulates of oxidizer and fuel in the fluoropolymer solution to form a dispersion, and coating a gas generant substrate with the dispersion. - View Dependent Claims (24, 25, 26, 27)
- the method comprising,
Specification