Deposing initiary compositions

Abstract

There is provided a composition and method of deposing an initiatory composition, said composition, comprising a:(i) a nanothermite suspension of a metal (M) oxide and a metal (M′) in a solvent, wherein the average particle size of the metal (M) oxide and a metal (M′) is less than 1000 nm, provided that (M)≠(M′),(ii) wherein said nanothermite suspension comprises a charging reagent comprising a reagent capable of forming a stable complex with each of the metal (M) oxide and the metal (M′), to from a metal (M) oxide complex, and a metal (M′) complex that have the same electrostatic charge, such that said metal (M) oxide complex and a metal (M′) complex repel each other in said suspension, wherein the admixture of the binder, nanothermite suspension charging reagent, has been caused to be mixed under Resonant Acoustic Mixing to provide a stable suspension of a nanothermite complex.

1 . A method of filling an explosive device with a nanothermite initiatory composition, the method comprising:
 forming a nanothermite suspension of a metal (M) oxide and a metal (M′) in a solvent, wherein an average particle size of the metal (M) oxide and the metal (M′) is less than 1000 nm, provided that (M)≠(M′);   forming a charging reagent comprising a reagent capable of forming a stable complex with each of the metal (M) oxide and the metal (M′), wherein the metal (M) and the metal (M′) have a same electrostatic charge or are sterically hindered, such that the metal (M) oxide complex and the metal (M′) complex repel each other;   forming an admixture of a binder, the nanothermite suspension, and the charging reagent;   causing the admixture of the binder, the nanothermite suspension, and the charging reagent to be mixed under Resonant Acoustic Mixing to provide a stable suspension of an admixture of a nanothermite complex; and   filling the explosive device with the admixture of the nanothermite complex.   
     
     
         2 . The method according to  claim 1 , wherein the Resonant Acoustic Mixing is caused at a frequency in a range of less than 200 Hz. 
     
     
         3 . The method according to  claim 2 , wherein the Resonant Acoustic Mixing is caused at a frequency in a range of less than 100 Hz. 
     
     
         4 . The method according to  claim 3 , wherein the Resonant Acoustic Mixing is caused at a frequency in a range of 58 Hz to 60 hz. 
     
     
         5 . The method according to  claim 1 , wherein a Resonant Acoustic Mixing stimulus applies an acceleration force of up to 100 g. 
     
     
         6 . The method according to  claim 1 , wherein the nanothermite suspension comprises a binder, in the range of from 0.1 to 16% w/w. 
     
     
         7 . The method according to  claim 1 , wherein the nanothermite suspension comprises a non-ionic surfactant. 
     
     
         8 . The method according to  claim 1 , wherein the composition is deposed in a primer cup, initiator, or explosive train. 
     
     
         9 . The method according to  claim 1 , wherein the metal (M) oxide is an oxide of a metal selected from a transition metal, Al, In, Sn, Mg, Be, B, and Si or a mixture thereof. 
     
     
         10 . The method according to  claim 9 , wherein the transition metal is Sc, Bi, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Mo or Zn. 
     
     
         11 . The method according to  claim 1 , wherein the metal (M′) is selected from a transition metal, Al, In, Sn, Mg, Be, B, Si or a mixture thereof. 
     
     
         12 . The method according to  claim 11 , wherein the transition metal is Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu or Zn. 
     
     
         13 . The method according to  claim 1 , wherein the composition comprises a graphitic filler in the range of 20-40% by weight. 
     
     
         14 . The method according to  claim 1 , wherein the solvent is a polar organic solvent. 
     
     
         15 . The method according to  claim 1 , further comprising causing the nanothermite suspension to be evaporated, to provide a powered nanothermite encapsulated in the binder. 
     
     
         16 . The method according to  claim 1 , wherein filling the explosive device includes applying the admixture of the nanothermite complex to the explosive device by extrusion, deposition, spray process, nozzle printing, or vapor deposition. 
     
     
         17 . A method of forming a nanothermite initiatory composition, the method comprising:
 forming a nanothermite suspension of a metal (M) oxide and a metal (M′) in a solvent, wherein an average particle size of the metal (M) oxide and the metal (M′) is less than 1000 nm, provided that (M)≠(M′);   forming a charging reagent comprising a reagent capable of forming a stable complex with each of the metal (M) oxide and the metal (M′), wherein the metal (M) and the metal (M′) have a same electrostatic charge or are sterically hindered, such that the metal (M) oxide complex and the metal (M′) complex repel each other;   forming an admixture of a binder, the nanothermite suspension, and the charging reagent; and   causing the admixture of the binder, the nanothermite suspension, and the charging reagent to be mixed under Resonant Acoustic Mixing to provide a stable suspension of an admixture of a nanothermite complex.   
     
     
         18 . The method according to  claim 17 , wherein the Resonant Acoustic Mixing is caused at a frequency in a range of less than 200 Hz. 
     
     
         19 . The method according to  claim 17 , wherein a Resonant Acoustic Mixing stimulus applies an acceleration force of up to 100 g. 
     
     
         20 . A nanothermite initiatory composition formed according to the method of  claim 17 .