US 11,746,068 B2
Three part mixing process for energetic materials and epoxy binder
Christina Yamamoto, Bloomington, IN (US); and Anthony P. Shaw, Madison, NJ (US)
Assigned to The United States of America, as Represented by the Secretary of the Navy, Washington, DC (US)
Filed by The United States of America, as represented by the Secretary of the Navy, Crane, IN (US)
Filed on Mar. 1, 2019, as Appl. No. 16/290,200.
Claims priority of provisional application 62/636,932, filed on Mar. 1, 2018.
Prior Publication US 2019/0270683 A1, Sep. 5, 2019
Int. Cl. C06B 21/00 (2006.01)
CPC C06B 21/0008 (2013.01) 6 Claims
OG exemplary drawing
 
1. A method of preparing pyrotechnic compositions comprising:
selecting a first pre-mixed composition ingredients comprising at least one fuel and a binder curing agent;
selecting a second pre-mixed composition ingredients comprising at least one oxidizer and a binder resin;
preparing a first pre-mixed composition by mixing the first pre-mixed composition ingredients at a first predetermined mixing setting using resonant acoustic mixing with a resonant acoustic mixer (RAM);
preparing a second pre-mixed composition by mixing the second pre-mixed composition ingredients at a second predetermined mixing setting using resonant acoustic mixing with the RAM; and
preparing pyrotechnic compositions by mixing the first and the second pre-mixed compositions at a third predetermined mixing setting;
wherein the first pre-mixed composition and the second pre-mixed composition each comprise a non-explosive, partially processed multi-part binder based pyrotechnic that is storable and has a longer storage shelf-life than a shelf-life of the prepared pyrotechnic compositions formed by mixing the first and the second pre-mixed compositions.