171results about "Alkali metal salt explosive compositions" patented technology

An explosive material composition containing, as an active ingredient, particles of a water-soluble reactive ingredient having an uniform particle size. Each particle is coated with an oil ingredient and/or a thickener. The coated particles form an agglomerate.

A safe environment-friendly novel pyrotechnic composition is used as a powdery colorful flower-forming spray composition, and comprises the compositions in parts by weight: 20-50 parts of a high-energy oxidizing agent, 30-60 parts of nitrocellulose, 1-15 parts of a colouring agent, 1-15 parts of a combustible effect agent, 1-10 parts of an adhesive, and 1-10 parts of a stabilizing agent. A preparation technology for the novel pyrotechnic composition is simple, the pyrotechnic composition prepared by employing the above formula is relatively low in friction sensitivity and impact sensitivity, far higher in chemical stability and safety than those of other pyrotechnic compositions, slightly smoky and environment-friendly after being combusted, and is widely applicable to various pyrotechnic composition products.

A nitrocellulose-free, gas-generating composition for use in vehicle occupant restraint systems, in particular in a belt tensioner gas generator, substantially consists of at least one nitrogen-containing organic fuel in a proportion of 55 to 70% by weight, an inorganic oxidator in a proportion of 30 to 45% by weight, at least one combustion moderator in a proportion of up to 10% by weight and up to 5% by weight conventional adjuvants and additives, each in relation to the overall weight of the composition. The composition has a pressure exponent of less than 0.35 and a combustion rate at 200 bar of at least 40 mm/s.

The invention discloses an electric-controllable combustion solid propellant based on perchlorate and a preparation method thereof. By weight, the electric-controllable solid propellant is prepared by the following raw materials: 35-90 parts of an oxidant, 10-30 parts of an adhesive, 0.1-2 parts of a cross-linking agent, 0.2-10 parts of a plasticizer and 5-20 parts of a metal fuel, wherein the oxidant is the perchlorate. The electric-controllable solid propellant has the better air humidity stability and high-temperature resistance, the difficulty of the preparation technology is low, the preparation process is simple, the operation is easy, and the safety coefficient is high.

The present invention is directed to a tracer composition for tracer bullets and other projectiles. One preferred formula of the tracer composition generally includes about 58 parts by weight of magnesium, about 38 parts by weight of polytetraflouroethylene, about 4 parts by weight of acrylic rubber, and a burn rate stabilizer such as about 1.5 parts by weight of carbon black or graphite. Tracer bullets including the tracer composition of the invention tend to exhibit a projectile path that is almost unnoticeable to the naked eye but quite visible through the use of equipment detecting energy in the near infrared range.

An autoignition composition 14 is provided to manage the safe combustion of a primary gas generant composition 12. The autoignition composition 14 contains carboxylic acid and potassium chlorate. A method of managing the safe combustion of the primary gas generant composition 12 is also provided.

A solid state moderated chemical reaction for use with a heating device comprises the complete reaction between iron powder and the oxidizer sodium chlorate in stoichiometric balance such that the oxygen, rather than being emitted externally to the device, is fully reacted internally in the heating device to a solid oxide. A heating device comprises a heating chamber defining an interior space for receiving and storing a substance to be heated, a heater for use as a source of heat which includes a reaction chamber, a solid state reaction composition disposed within the reaction chamber such that it is physically isolated from and in thermal communication with the interior space of the heating chamber, an activation mechanism in communication with the composition disposed within the reaction chamber, and wherein the reaction composition is inert until the activation mechanism is actuated. Activation mechanism comprises an actuator having a user interface portion and an actuation portion, and the actuation portion carries a reaction initiation material that, when assembled with the heater, is capable of initiating a chemical reaction in the chemical composition when the actuation portion is actuated by a user. Heater comprises a housing defining an exterior shape of the heater and an interior space, a solid state chemical heating composition disposed within the interior space, and an activation mechanism in communication with the composition and having an actuator and disposed within the housing such that the activation mechanism is actuable exteriorly from the housing. Heater may be incorporated into the heating device, or alternatively may be modular and removably coupled to heating device. Heater may include an opening, or alternatively may be fully sealed for emission-free operation as well as to assure a controlled internal environment and to promote stability during storage. Various passive and active thermal controls based on physical or chemical responses of materials to temperature and appropriate to important use conditions for heating device are also provided.

The invention relates to a potassium chlorate-free and sulfur-free fragrant environmental- protection safety powder of firecrackers and its components are compounded of potassium perchlorate, Al powder, perlite powder and sandalwood powder. It has simple formula, a few components, good chemical stability and safety, no potassium chlorate and no sulfur, eliminates the defects of strong impact and friction sensitivity, high danger, etc, and has the advantages of low mechanical sensitivity and high safety, excellent bang rate of setting off firecrackers and sound level value.

An oxidant of firecracker consists of potassium perchlorate 20-40wt%, nitrate 30-50wt%, passive filler 5-20wt% and active agent 5-10wt%. It achieves better safety, low cost, no pollution, stable physic and chemical performances and good hear-resisting property.

A composition of matter capable of producing a nontoxic smoke upon combustion comprising a smoke formulation. The composition of matter further comprises an oxidizer selected from the group consisting of potassium chlorate and sodium chlorate. The smoke formulation further comprises a fuel.

Propellant compositions are provided herein for use in small arms cartridges. Such propellant compositions include from about 70 to about 90% by weight of a cellulose-based organic fuel, from about 5 to about 30% by weight of a non-azide, nitrogen-containing primary organic oxidizer and from about 0.5 to about 10.0% by weight of a secondary nitrate, perchlorate, chlorate of peroxide oxidizer. Preferably, such compositions are in the form of extruded shaped hollow cylindrical grains having a length in the range of 0.030 to 0.200 inch, a diameter in the range 0.040 to 0.070 inch, and having a coaxial opening there through having a wall grain thickness in the range 0.008 to 0.016 inch. Ignition grains are also provided for use alone or in a mixture with the propellant compositions. When used in a small caliber firearm or muzzleloader, the temperature of combustion is at a level that ensures substantially complete combustion of the fuel during firing so that the products of combustion are mostly gaseous.

The present invention relates to a potassium perchlorate fire crackers powder. Its composition includes (by wt%) potassium perchlorate (KClO4) 38.46%-52.63%, sulfur (S) 17.39%-31.82%, aluminium powder (AL) 12.5%-23.81% and ground perlite 8.33%-15.38%. It is safe and low in cost, and its explosive effect is identical to that of potassium chlorate.