5 results about "Polymer-bonded explosive" patented technology

This invention discloses a method for preparing a polymer-bonded explosive with synergistic enhancement of graphene and carbon nanotubes, aiming to solve the problem of poor thermal conductivity of existing PBX. By using carbon nanotubes as thermally conductive fillers and forming a multi-level structure through a water suspension method and a slurry method composite process, the prepared composite material has a high thermal conductivity.

The invention belongs to the related technical field of online monitoring of the curing and forming process of polymer bonded explosive, and discloses a device and method for online measurement of the curing and forming process of polymer bonded explosive, and the device comprises a coaxial probe, a dielectric property measurement module and a curing degree online measurement and calculation module which are connected in sequence; the coaxial probe comprises an electrode, an insulating layer and a shielding layer which are coaxially arranged from inside to outside, and the electrode is located in the middle of the coaxial probe and forms an electric field loop with the shielding layer; the dielectric property measurement module is used for detecting the dielectric constant of the polymer bonded explosive at the corresponding position; and the curing degree online measurement and calculation module is used for calculating the curing degree of the polymer bonded explosive corresponding to the measurement position of the coaxial probe in real time. The device can realize on-line measurement of the PBX curing forming process, is suitable for directly measuring the curing degrees of different spatial positions under the actual curing forming working condition, is stable and convenient in measurement, is high in anti-interference capability, and is very suitable for industrial large-scale preparation and actual working condition application.

Explosives using thermally expandable microspheres (TEMs) in a solid matrix are disclosed that facilitate tunable changes in local density, porosity, and ultimately, shock sensitivity. Solid high explosive systems with “on demand” shock sensitivity may be created. A relatively small fraction (e.g., 1% or less) of TEMs may incorporated during the manufacturing process of the solid matrix explosive (e.g., polymer-bonded explosives (PBX), trinitrotoluene (TNT), etc.). The fraction of TEMs used to achieve the desired explosive properties will depend on the base explosive material to achieve the desired initiation sensitivity.

The invention discloses a high polymer bonded explosive with mild and self-healing damage, a polyamidosemicarbazide binder and a preparation method of the high polymer bonded explosive. The high polymer bonded explosive with mild and self-healing damage comprises the following components: (a) a high-energy explosive; and (b) a polyamidosemicarbazide binder, the polyamidosemicarbazide binder has a disulfide bond structure and also contains multiple hydrogen bonds, and can be subjected to reversible exchange or reconstruction reaction under a mild heating condition, and a polymer molecular chain has sufficient movement ability at a damaged part of the high polymer bonded explosive, flows and fills a damaged interface, so that the damage of the high polymer bonded explosive to the damaged part is avoided. The disulfide bond and the hydrogen bond can be formed again, so that the microstructure and the strength of the explosive are recovered.

The invention discloses a method and a system for testing cross-linking degree spatial distribution of a flexible flat plate polymer bonded explosive. The method comprises the following steps: acquiring dielectric constants at different positions and different thicknesses of a flexible flat plate PBX to be tested; two interdigital electrode sensor arrays are designed, dielectric constants at different positions and different depths of the PBX are measured respectively, the crosslinking degrees at different positions and different thicknesses are further calculated through a crosslinking degree-dielectric constant formula, and finally the spatial distribution of the crosslinking degrees of the PBX is obtained. The invention also provides a flexible flat plate PBX crosslinking degree spatial distribution measurement system. According to the invention, flexible flat plate PBX crosslinking degree space distribution measurement can be realized, and the anti-interference capability is strong.