초록 ▼

This substantially water-free method for preparing high density igniter granules involves uniformly coating fuel and oxidizer particulates dispersed in a non-solvent with a thermoplastic elastomer solution to produce coated igniter granules exhibiting substantially uniform size and shape distributio

This substantially water-free method for preparing high density igniter granules involves uniformly coating fuel and oxidizer particulates dispersed in a non-solvent with a thermoplastic elastomer solution to produce coated igniter granules exhibiting substantially uniform size and shape distributions. The coated igniter granules are especially useful for waterless extrusion into igniters for automobile gas generating inflation devices, solid propellant rocket motors, and thrust decoys.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of preparing extrudable igniter granules suitable for waterless extrusion, the method comprising:preparing a substantially water-free slurry comprising fuel particles and oxidizer particles dispersed in a liquid comprising at least one first non-solvent, wherei

[ What is claimed is:] [1.]1. A method of preparing extrudable igniter granules suitable for waterless extrusion, the method comprising:preparing a substantially water-free slurry comprising fuel particles and oxidizer particles dispersed in a liquid comprising at least one first non-solvent, wherein the fuel particles and the oxidizer particles are substantially insoluble in the liquid, and wherein at least one member selected from the group consisting of the fuel particles and the oxidizer particles is water sensitive;separately dissolving at least one thermoplastic elastomer binder into at least one solvent to form a binder solution;mixing at least a portion of the binder solution in a substantially water-free state with at least a portion of the slurry to form a mixture comprising the fuel particles and the oxidizer particles dispersed in the binder solution;combining at least one second non-solvent with the mixture, wherein the fuel particles and the oxidizer particles are substantially insoluble in the second non-solvent; andforming the extrudable igniter granules, the extrudable igniter granules comprising the fuel particles and the oxidizer particles coated with the thermoplastic elastomer binder.