Emulsion explosives with gas bubbles that are resistant to in-borehole migration or coalescence are disclosed herein. Such emulsions can be sensitized by mechanically introducing gas bubbles into the emulsion. Gassing can be performed at any of multiple points from initial formation of the emulsion to delivery of the emulsion into the borehole. Resistance to gas bubble migration and coalescence can be achieved by homogenization, without the need for bubble stabilization agents.

Provided are systems and methods for synthesis of metastable intermolecular composites, specifically energetic nanocomposites. The method may include dispersing a reductive fuel within a first aqueous solution and combining the reductive fuel solution with a second aqueous solution comprising a metal oxide and base to create a reductive fuel-metal oxide/base solution. The reductive fuel-metal oxide/base solution is mixed and solid material is filtered and collected from the mixture. The solid material is heated to obtain reductive fuel-metal oxide energetic nanocomposites. The ratio of base to metal oxide can be varied to achieve different structures of including core-shell or well-mixed nanocomposites. The reductive fuel may be aluminum nanoparticles, the metal oxide may be copper oxide, and the base may be ammonia. The method can be used for mass production of energetic nanocomposites and the structure of the energetic nanocomposites can be varied to tune the energetic performance of the energetic nanocomposites.

A method of making RDX nanoparticles comprises dissolving RDX in acetone; injecting the RDX/acetone through an inner tube of a turbulent mixer to form an inner flow; injecting an anti-solvent through an outer tube of a turbulent mixer to form an outer flow, wherein the inner tube is concentric with the outer tube, wherein turbulent mixing of the inner flow and outer flow precipitates nanoparticle of RDX. The concentration of RDX in acetone may be 0.5-1.0 mg RDX/mL acetone. The anti-solvent is a mixture of hexane and cyclohexanone.

A method of synthesising an organic high explosive includes the steps of i) providing a first solution A, ii) providing a second solution B, wherein the admixture of solution A and solution B are selected such that they are capable upon formation of the admixture of reacting together to provide an organic high explosive, and iii) causing the solution A and B to be mixed and passed through a flow reactor to create an admixture, wherein the flow reactor includes a pipe, wherein the internal diameter of the pipe is selected such that it is less than the critical diameter of the organic high explosive, thereby preventing detonation of the formed organic high explosive in said flow reactor.

A processing vessel (1) provided with a material inlet (2, 3, 4, 5) and a processed material outlet (25) wherein the material flows continuously through the vessel which is split into a series of zones (6, 7, 8) through which the material passes wherein the zones are shielded from each other by controlling the rate at which the material flows and an increasing level of vacuum is applied inconsecutive zones and the system is provided with acoustic energy which imparts energy to the process material by virtue of the contact between the zone dividers and the process material and processing material in such a vessel.

Disclosed are an ignition powder, a preparation method therefor and a use thereof, and an airbag gas generator, which belong to the technical field of ignition powders. The raw materials of the ignition powder include the following components in percentages by mass: potassium perchlorate. 30%50%; basic copper nitrate: 5%20%; a fuel: 15%60%; a metal oxide: 1%25%; and a metal powder: 1%25%, wherein the metal powder is at least one of a titanium powder, a magnesium powder, a copper powder, an iron powder, a zirconium powder, a hafnium powder, a tungsten powder or a silicon powder.

A continuous mixing technology is used to develop a continuous process as an alternative manufacturing technology to sigma-blade batch mixer process for producing flexible explosive formulations (e.g. Flex-X) that is composed of energetic solids and additives without any solvents. This continuous mixer's chamber is partially filled under atmospheric pressure with significant overhead space, reducing energetic hazards. The continuous mixing machine can be comprised with one or two temperature zones, wherein all ingredients are added subsequently into the mixing chamber.