Lead-Free Nanoscale Metal/Oxidizer Composite for Electric Primers

Abstract

A lead-free electric primer composition including a mixture of at least one metal having nanometer-sized particles with at least one oxidizer having nanometer-sized particles producing a metal(s)-oxidizer(s) nanocomposite, wherein the oxidizer(s) is present in an effective amount to substantially oxidize the metal(s), at least one gas generating material mixed with the metal(s)-oxidizer(s) nanocomposite producing a metal(s)-oxidizer(s)-gas generator(s) composition, at least one binder, the metal(s)-oxidizer(s)-gas generating composition is coated with the binder, and at least one conductive material.

1 . A lead-free electric primer composition comprising:
 a mixture of at least one metal having nanometer-sized particles with at least one oxidizer having nanometer-sized particles producing a metal(s)-oxidizer(s) nanocomposite, wherein said oxidizer(s) is present in an effective amount to substantially oxidize said metal(s);   at least one gas generating material (gas generator) mixed with said metal(s)-oxidizer(s) nanocomposite producing a metal(s)-oxidizer(s)-gas generator(s) composition, wherein said gas generating material comprises bis-aminotetrazolyltetrazine (BTATz);   at least one binder, said metal(s)-oxidizer(s)-gas generating material composition is coated with said binder; and   at least one conductive material.   
     
     
         2 . The composition according to  claim 1 , wherein said metal(s) being in the form of a powder which comprises at least one of aluminum, boron, titanium, zirconium, magnesium, hafnium, and any combination thereof. 
     
     
         3 . The composition according to  claim 1 , wherein said metal is a powder having a particle size of up to about 100 nanometers. 
     
     
         4 . The composition according to  claim 1 , wherein said metal is a powder having a particle size of about 20 nm to about 80 nm. 
     
     
         5 . The composition according to  claim 4 , wherein said metal is a powder having a particle size of about 20 nm to about 60 nm. 
     
     
         6 . The composition according to  claim 1 , wherein said oxidizer(s) includes metal oxidizer(s) comprising at least one of Molybdenum Trioxide (MoO 3 ), Copper Oxide (CuO), Tungsten Oxide (WO 3 ), Molybdenum Dioxide (MoO 2 ), and any combination thereof. 
     
     
         7 - 9 . (canceled) 
     
     
         10 . The composition according to  claim 1 , wherein said oxidizer(s) being in the form of a powder is molybdenum trioxide. 
     
     
         11 . The composition according to  claim 1 , wherein said oxidizer is a powder having a particle size of up to about 100 nanometers. 
     
     
         12 . The composition according to  claim 1 , wherein said oxidizer is a powder having a particle size of about 20 nm to about 80 nm. 
     
     
         13 . The composition according to  claim 12 , wherein said oxidizer is a powder having a particle size of about 20 nm to about 60 nm. 
     
     
         14 . The composition according to  claim 1 , wherein said gas generating material(s) comprises at least one of bis-aminotetrazolyl-tetrazine (BTATz) salts. 
     
     
         15 . (canceled) 
     
     
         16 . The composition according to  claim 1 , wherein said gas generating material comprises about 5 to about 50 weight % of said primer composition. 
     
     
         17 . The composition according to  claim 16 , wherein said gas generating material comprises about 25 to about 35 weight % of said primer composition. 
     
     
         18 . The composition according to  claim 1 , wherein said gas generating material comprises about 20 to about 30 weight % of said primer composition. 
     
     
         19 . The composition according to  claim 1 , wherein said binder(s) comprises at least one of polychlorotrifluoroethylene (PCTFE), Polyethylene Oxide (PEO), Polyethylene Glycol (PEG), Gylcidyl Azide Polymer (GAP), Hydroxyl-Terminated Polybutadiene (HTPB), and any combination thereof. 
     
     
         20 . The composition according to  claim 1 , wherein said binder comprises at least one of polychlorotrifluoroethylene (PCTFE). 
     
     
         21 . The composition according to  claim 1 , wherein said primer composition includes about 2 to about 25 weight % of said binder. 
     
     
         22 . The composition according to  claim 21 , wherein said primer composition includes about 4 weight % of said binder. 
     
     
         23 . The composition according to  claim 1 , wherein said binder is a powder having a particle size of up to about 100 nanometers. 
     
     
         24 . The composition according to  claim 1 , wherein said conductive material is a powder having a particle size of up to about 100 nanometers. 
     
     
         25 . The composition according to  claim 1 , further comprising conductive additive having a particle size of up to about 100 nanometers. 
     
     
         26 . The composition according to  claim 1 , wherein said conductive material comprises at least one of carbon black. 
     
     
         27 . The composition of  claim 1 , wherein said at least one metal is a powder, having nanometer-sized particles, including Aluminum. 
     
     
         28 . A lead-free electric primer composition comprising:
 a metal powder, having nanometer-sized particles, including Aluminum;   an oxidizer powder, having nanometer-sized particles, including molybdenum trioxide (MoO 3 ) in sufficient amount to substantially oxidize said Aluminum;   a gas generating material including bis-aminotetrazolyl-tetrazine (BTATz);   a binder including polychlorotrifluoroethylene (PCTFE); and   a conductive material including carbon black in sufficient amount to render the composition electrically conducting.