6results about "Nitroparaffin explosive compositions" 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 discloses a formula of a eutectic microsphere direct-writing booster explosive thread and an explosive charging method, and belongs to the technical field of explosive charging of initiating explosive devices. One purpose of the invention is to provide a formula of the eutectic microsphere direct-writing booster explosive line, namely a formula of suspension explosive ink taking 2CL-20. HMX eutectic microspheres as a main body, and a main body explosive poor solvent isopropanol is selected as a solvent system, so that the microstructure and structure of the eutectic microsphere explosive are protected, and the high energy and insensitive characteristics of the booster explosive line are kept; the mass ratio of the binder to the explosive is 1: 9, writing smoothness and forming stability are kept, meanwhile, the content of energy-containing components is increased to the maximum extent, the forming density reaches 1.62 g / cm < 2 > or above, cracks are avoided, and explosion propagation and high reliability are achieved. The second purpose of the invention is to provide the charging method of the eutectic microsphere direct-writing booster explosive thread, by optimizing an explosive ink formula and process parameters, the forming of the high-precision, high-density and high-energy insensitive booster explosive thread is realized, and the working reliability of the booster explosive thread is improved.

The invention discloses an antistatic composite energetic material capable of completely avoiding charge generation and a preparation method thereof, and the preparation method comprises the following steps: adding an energetic material into an ethanol-water mixed solution, carrying out ultrasonic treatment at room temperature, and fully stirring to obtain an energetic material dispersion liquid; adjusting the pH value of the energetic material dispersion liquid to 3-5 by using glacial acetic acid, and uniformly stirring to obtain a mixed solution; dropwise adding chemical components with a strong electron accepting function and a strong electron donating function into the mixed solution, refluxing, stirring for a period of time, cooling to room temperature, washing and filtering; and drying the washed and filtered sample to obtain the strong electron accepting and strong electron donating molecule modified antistatic composite energetic material. According to the invention, chemical components with strong electron accepting and strong electron donating are modified on the surface of the energetic material through a molecular engineering method, so that the preparation of the antistatic coating and the antistatic composite energetic material capable of completely avoiding charge generation is realized, and the static accumulation of the energetic materials such as RDX and the like in the friction process is effectively reduced.

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.

This invention discloses a method for preparing a high-energy aluminum-containing explosive composite of fluororubber / Al / CL-20, comprising: coating and modifying nano-Al powder with functional materials to obtain modified nano-Al powder; dissolving fluororubber in solvent A and allowing it to stand to obtain a fluororubber solution; adding hexanitrohexaazaisowulzane explosive CL-20 to the fluororubber solution, dissolving it, adding the modified nano-Al powder, and sonicating to prepare spherical liquid fluororubber / Al / CL-20, then adding deionized water and sonicating to obtain an emulsion; and extracting or freeze-drying the emulsion to obtain a solid spherical fluororubber / Al / CL-20 composite. This invention is based on the Pickering emulsion method, using modified nano-Al particles as an interface stabilizer to form a stable emulsion, resulting in a micron-sized composite containing modified nano-Al powder, fluororubber, and CL-20. This allows for close contact between CL-20 and nano-Al powder, and the high-energy composite explosive retains the unique properties of each material, combines multiple functions, and improves the performance of the composite material.

The invention belongs to the field of energetic materials, and discloses an effective method for inhibiting the formation of AB eutectic for a long time, which can ensure that a mixture of A and B does not form eutectic within 25 years when coexisting under conventional storage conditions by adding a eutectic inhibitor. When a small amount of inhibitor is added, the high-temperature acceleration experiment product of the A and B mixture is still a physical mixture of A and B, the X-ray powder diffraction characteristic peak of the product is the physical superposition of the A crystal and the B crystal, and no new characteristic diffraction peak belonging to the A and B eutectic crystal appears, so that the problem that the performance of the propellant is reduced due to the eutectic crystal formed when the A and B mixtures coexist is effectively solved.