201results about "Non-explosive fillers/gelling/thickening agents" patented technology

Mixtures of high explosives with materials that readily absorb microwaves ignite more readily when exposed to microwave energy than the corresponding neat explosives. A charge of HMX (0.5 gram) mixed with carbon nanotubes (1 percent by mass) ignited with 7.5 joules at an average rate of 750 W for 10 milliseconds. To raise a charge of the same mass of neat HMX to an autoignition temperature of 200 degrees Celsius would require much more energy (about 110 joules) for a longer duration (about 150 milliseconds).

The invention is a composition for a high burning-rate solid rocket propellant, where the composition includes a binder compounded with a soluble energetic additive; a metallic fuel; and an oxidative fuel. The resulting composition has a tactical Class 1.3 hazard rating, and a linear regression rate that is substantially equivalent to a tactical Class 1.1 hazard rating obtainable using solid rocket propellants. The composition may include a heat-conducting element, a plasticizer, a curing component, a combustion catalyst, and curing catalyst.

The present invention provides a simulant material comprising a primary explosive and a carrier.

The invention discloses an alternating micro-layered heat conduction PBX mixed explosive. The mixed explosive comprises, by weight, 90%-95% of an explosive, 4%-9.8% of a polymer binder and 0.2%-1% ofa heat conduction filler. The heat conduction filler comprises a flake-like heat conduction filler and a linear heat conduction filler. The flake-like heat conduction filler comprises any one of graphene, graphene nanosheets and boron nitride nanosheets. The linear heat conduction filler comprises any one of single-walled carbon nanotubes, multi-walled carbon nanotubes, boron nitride nanotubes andnano-carbon fibers. The invention also provides a preparation method of the alternating micro-layered heat conduction PBX mixed explosive. The preparation method fully utilizes the thermal conductivity characteristics and advantages of the two-dimensional flake-like and one-dimensional linear high thermal conductivity fillers and adopts an ingenious structure control strategy so that the fillersare respectively enriched in the partial layer space to form flake-like and linear thermal conduction layer passages and thus parallel transmission in layers is realized and heat transfer is maximized.

Disclosed is a novel underground mine gel emulsion explosive. The explosive is mainly prepared from ammonia nitrate,sodium nitrate,a compound oil phase,water,sensitizer,a viscosity reducer,a thickening agent and a thickening agent wrapping film material. The viscosity reducer is used for reducing the viscosity of the emulsion explosive,pumping resistance is lowered,and it is ensured that the emulsion explosive can be smoothly pumped into a gun hole. Meanwhile,the thickening agent wrapped by micro-capsules is added into the emulsion explosive,in the pumping and spraying charging process of thethickening agent wrapped by micro-capsules,due to the extrusion,friction and spraying collision effects,the micro-capsules are damaged,enable the thickening agent to be exposed,and react with water inthe emulsion explosive,and the viscosity of the underground mine gel emulsion explosive after the explosive reaches the gun hole is enhanced,so that the problem that charging and recharging of the hole are serious on an underground mine is effectively solved. Meanwhile the underground mine gel emulsion explosive is good in detonation performance,and the requirement for storage stability is met.

Compositions and methods relate to gas generants used in inflatable restraint systems. The gas generant grains include a fuel mixture having at least one fuel and at least one oxidizer, which have a burn rate that is susceptible to pressure sensitivity during combustion. The gas generant composition further includes a plurality of pressure sensitivity modifying glass fiber particles distributed therein to lessen the pressure sensitivity and/or to increase combustion stability of the gas generant. Such gas generants can be formed via spray drying techniques.

A high density, generally recognized as safe hybrid rocket motor is described which has a density-specific impulse similar to a solid rocket motor, with good performance approaching or equal to a liquid rocket motor. These high density hybrid motors resolve the packaging efficiency/effectiveness problems limiting the application of safe, low cost hybrid motor technology.

The present invention relates to a process for producing a fine diamond characterized by that an explosive composition containing a compound having an aliphatic hydrocarbon ring with 4 to 15 carbons, a fullerenes or a tubular or fiber carbon nanostructure having a diameter of 1 to 100 nm as a carbon raw material is exploded for explosive synthesis, and a fine diamond obtained by said process; the ultrafine particulate diamond of 1 to 3 nm is expected, as a single nano diamond, for application of the fields such as ultrafine processing, the uniform, spherical fine particulate diamond of 0.01 to 100 μm is expected as abrasive grains for polishing in precise processing and the like, and the needle diamond is expected for application in various sensors and the like.

The invention relates to a pouring-type high-energy insensitive explosive and a preparation method thereof. In order to solve the problem of a low energy level of traditional butylated hydroxy castingPBX explosives, an energy-containing adhesive and an energy-containing plasticizer are introduced as a binder system, and through addition of high-energy explosives and metal fuel components, the prepared pouring-type PBX explosive has high energy characteristics; the explosive formula has a density greater than 1.85 g/cm<3>, the detonation velocity is greater than 7800 m/s, and the explosive power is that of 1.9 times or above the TNT equivalent; and at the same time, the explosive formula has good low-vulnerability, and especially has mild reactions in slow-speed burning tests, and the reaction level does not exceed a detonation level.

The invention relates to a piece of ammunition or ammunition component comprising a pyrotechnic load associated with a structure, such as a casing. This ammunition is characterized in that part at least of its structure is made of an energetic material comprising at least one energetic component mixed with at least a first structural reinforcement material.

Systems and methods for chemoremediation or mechanical destruction of undetonated explosive materials. An explosive apparatus contains an explosive material in close proximity to a chemical reagent selected for its chemoremediative properties. A barrier is interposed between the explosive material and the chemical reagent to delay the chemoremediation of the explosive material.

Alternatively a water expandable material may be incorporated into the explosive material, whereby upon exposure to moisture the water absorbing material will expand sufficiently to fragment the explosive material into initiation insensitive particles. Initiation insensitivity is achieved by incorporation of water, which acts as a desensitizing agent as well as fragmenting the explosive material into particles sufficiently small that they are below the critical diameter for explosive initiation.

The present invention also relates to self-degradable, shaped explosive formulations, comprising an explosive material and a water expandable material.