Abstract:
Energetic compounds based on bismuth salts with reduced toxicity that are obtained through the reaction of soluble bismuth salts with soluble salts of organic or inorganic energetic compounds based on azides, derivatives aromatic nitro compounds or nitrogenous heterocyclic compounds, together with the methods for their preparation and application.
Abstract:
The inclusion of between about 15 to about 60 formulation weight percent of a reaction product of basic copper nitrate and at least one transition metal complex of 5-aminotetrazole, wherein the at least one transition metal complex of 5-aminotetrazole and the basic copper nitrate are included in a weight ratio of no more than 1 part of the at least one transition metal complex of 5-aminotetrazole per 1 part of basic copper nitrate in azide fuel-free gas generant formulations exhibiting increased burn rates, as compared to the same formulation without the inclusion of that reaction product.
Abstract:
What is described is the use of a microjet reactor for the production of initiating explosive, each of the starting solutions for explosive production in the microjet reactor being injected through a nozzle onto a common collision point into a reactor space enclosed by a reactor housing, a gas being admitted into the reactor space via an opening, and the resulting initiating explosive crystals being removed from the reactor housing together with the liquid and excess gas through a further opening.
Abstract:
Solid pyrotechnic gas generant compositions and monopropellants are provided for use in inflators of automotive air bag restraint systems which, when combusted, produce acceptable burning rates, generate a high concentration of substantially innocuous gases, and a low concentration of substantially water insoluble non-toxic solid combustion products which limits the potential for asthmatic and pulmonary conditions. The propellant compositions provided are based on metal salts of lanthanide and rare earth elements, particularly lanthanide or rare earth nitrate salts and lanthanide or rare earth complexes with nitrogen-containing cations and nitrate anions. Scandium and cerium are preferred lanthanide and rare earth elements for these compositions.
Abstract:
Basic copper nitrate-containing gas generant compositions and associated methods are provided for producing or resulting in increased burn rates via the inclusion of an effective amount of one or more metal (e.g., Al, Ti, Zn, Mg and/or Zr) oxide additives.
Abstract:
Gas generating compositions and methods for their use are provided. Metal complexes are used as gas generating compositions. These complexes are comprised of a cationic metal template, sufficient oxidizing anion to balance the charge of the complex, and a neutral ligand containing hydrogen and nitrogen. The complexes are formulated such that when the complex combusts nitrogen gas and water vapor is produced. Specific examples of such complexes include metal nitrite ammine, metal nitrate ammine, and metal perchlorate ammine complexes, as well as hydrazine complexes. Such complexes are adaptable for use in gas generating devices such as automobile air bags.
Abstract:
A N,N-dinitramide salt is disclosed having the formula MN(NO.sub.2).sub.2 where M is a cation selected from the class consisting of a metal ion and a nitrogen-containing ion. The dinitramide salt exhibits high temperature stability, high energy density, and an absence of smoke generating halogens, rendering it useful as an oxidizer in rocket fuels. The dinitramide salts are meltable and pumpable oxidizers which may be used in start-stop rocket engines instead of other less stable oxidizers.
Abstract:
A priming composition with an elevated thermal stability, which is sensit to percussion, is disclosed. The priming composition comprises a tetrazolic ring containing primary explosive and a sensitivity additive. The sensitivity additive comprises an oxidizing agent and a reducing agent. 40 to 95 weight percent of the priming composition is the primary explosive, 2.5 to 40 weight percent of the priming composition is the oxidizing agent and 2.5 to 40 weight percent of the priming composition is the reducing agent. The priming composition is applied to heads of percussion fuses.
Abstract:
Energetic materials that are photoactive or believed to be photoactive may include a conventional explosive (e.g. PETN, nitroglycerine) derivatized with an energetic UV-absorbing and/or VIS-absorbing chromophore such as 1,2,4,5-tetrazine or 1,3,5-triazine. Absorption of laser light having a suitably chosen wavelength may result in photodissociation, decomposition, and explosive release of energy. These materials may be used as ligands to form complexes. Coordination compounds include such complexes with counterions. Some having the formula M(L)n2+ were synthesized, wherein M is a transition metal and L is a ligand and n is 2 or 3. These may be photoactive upon exposure to a laser light beam having an appropriate wavelength of UV light, near-IR and/or visible light. Photoactive materials also include coordination compounds bearing non-energetic ligands; in this case, the counterion may be an oxidant such as perchlorate.