SODIUM AZIDE GAS GENERATING SOLID PROPELLANT WITH FLUOROCARBON BINDER

• US 3,833,432 A
• Filed: 02/11/1970
• Issued: 09/03/1974
• Est. Priority Date: 02/11/1970
• Status: Expired due to Term

• Current Assignee: Bertram K. Moy, Gerald L. Mackenzie, Marguerite S. Chang
• Original Assignee: Bertram K. Moy, Gerald L. Mackenzie, Marguerite S. Chang
• Inventors: Moy, Bertram K., MacKenzie, Gerald L., Chang, Marguerite S.
• Primary Examiner(s): Padgett, Benjamin R.
• Assistant Examiner(s): Miller, E. A.
• Application Number:
  US05/014,827
• Time in Patent Office: 1,665 Days
• Field of Search: 149/19,35,19.3
• US Class Current: 149/19.3
• CPC Class Codes: C06B 35/00 Compositions containing a metal azide
• CPC Class Codes: C06B 45/10 the organic component containing a resin
• CPC Class Codes: C06D 5/06 by reaction of two or more solids

Abstract

Gas generating solid propellant compositions which utilize sodium azide as a nitrogen source and are further comprised of a fluorocarbon binder material and a combustion catalyst of finely divided colloidal silicon dioxide and/or finely divided carbon black.

Claims

2. The gas generating solid propellant composition of claim 1 wherein said finely divided colloidal silicon dioxide is further characterized by having a minimum surface area of about 175 square meters per gram.

3. The gas generating solid propellant composition of claim 1 wherein said fluorocarbon binder material is a polymeric fully fluorinated fluorocarbon.

4. The gas generating solid propellant composition of claim 1 wherein said fluorocarbon binder material is a polymeric partially fluorinated fluorocarbon.

5. The gas generating solid propellant composition of claim 1 which further includes a metal selected from the group consisting of magnesium and aluminum.

6. The gas generating solid propellant composition of claim 1 wherein said sodium azide is present in an amount within the range of from about 50 to about 75 weight percent, said fluorocarbon binder material is present in an amount within the range of from about 25 to about 40 percent by weight and said combustion catalyst is present in an amount up to about 10 percent by weight.

7. The gas generating solid propellant composition of claim 1 wherein said sodium azide and said fluorocarbon binder material are present in about stoichiometric quantities.

8. The gas generating solid propellant composition of claim 1 wherein said fluorocarbon material is selected from the group consisting of polytetrafluoroethylene, and a copolymer of vinylidene fluoride and perfluoropropylene.

9. The gas generating solid propellant composition of claim 3 wherein said polymeric fully fluorinated fluorocarbon is polytetrafluoroethylene.

10. The gas generating solid propellant composition of claim 4 wherein said polymeric partially fluorinated fluorocarbon is a copolymer of vinylidene fluoride and hexafluoropropylene.

11. The gas generating solid propellant composition of claim 4 wherein said polymeric partially fluorinated fluorocarbon is a homopolymer of chlorotrifluoroethylene.

12. The gas generating solid propellant composition of claim 4 wherein said polymeric partially fluorinated fluorocarbon is a copolymer of vinylidene fluoride and chlorotrifluoroethylene.