36 results about "Nitroamine" patented technology

An ultrasensitive method for detecting non-aromatic non-planar nitroamine analytes in a sample is provided.

A training aid for use in training canines to detect an explosive material includes an explosive material adsorbed in the pores of a high surface area mesoporous or nanoporous host material. By adjusting the surfaces of the pores of the substrate material, the substrate can accommodate various types of explosive materials in a non-detonable and non-flammable manner, including nitroaromatics, nitroamines, nitrate-based explosives, and peroxide-based explosives. When the training aid is in an unsealed condition, a continuous flux of explosive material is released without providing any explosive or flame hazard to the trainer and canine.

The invention discloses 2-amino-4-nitramine-6-formyl nitramine-1,3,5-triazine oxynitride and thea preparation method thereof. The preparation method comprises the following steps: (1) at 25 DEG C, adding 1,3,5-triazine and 1,2,4-triazole into trifluoroacetic acid, and then adding 50% hydrogen peroxide for full reaction at this temperature, and then pouring into ice water to quench, filtering to obtain an intermediate; (2) under low temperature condition, adding the intermediate into 100% HNO3, and then performing full reaction at this temperature, after that pouring into ice water to quench, precipitating solids after stirring for a period of time, filtering and washing, and obtaining a target product.The preparation method provided by the invention facilitates obtaining monocyclic triazine high energetic materials that is 2-amino-4-nitramine-6-formyl nitramine-1,3,5-triazine oxynitride.

The invention discloses a method for preparing graphene-coated spheroidization ammonium dinitramide. The method includes steps of firstly, preparing spheroidization ammonium dinitramide by the aid ofnormal-temperature or low-temperature re-crystallization processes under joint induction effects of ultrasonic waves-nitramine explosive; secondly, preparing graphene-coated spheroidization ammonium dinitramide composite materials by the aid of ultrasonic-anti-solvent processes. The method has the advantages that conventional high-temperature melting ammonium dinitramide spheroidization technologies are improved, accordingly, risks due to local overheating or aggregation of materials at the high temperatures can be reduced, and the technological realization of spheroidization-coating processescan be expanded; the spheroidization ammonium dinitramide is coated by high-activity graphene oxide with mutual effects with the spheroidization ammonium dinitramide, accordingly, binding force between the graphene oxide and the spheroidization ammonium dinitramide can be increased, and the moisture absorption of ammonium dinitramide can be obviously deteriorated.

The invention relates to an alkynylated neutral polymer bonding agent, a preparation method and a propellant. The present invention is the first to prepare an alkynylated neutral polymer bonding agent, and the molecular structure simultaneously contains a hydroxyl group, an alkynyl terminal group, and a cyano group. and other three groups, the cyano group in the molecular chain is adsorbed on the surface of the nitramine filler to form a polymer shell insoluble in nitrate ester, which inhibits the dissolution of the nitramine filler by plasticizers such as nitrate ester, and enhances the solubility of the nitramine filler. The physical strengthening effect improves the modulus and strength of the composite material; the hydroxyl group enters the cross-linked curing network system through the isocyanate curing agent to enhance the interaction between the adhesive and the nitramine solid filler; the alkynyl group and the azide adhesive molecule The azide group undergoes a click reaction, which enhances the interaction between the adhesive molecule and the bonding agent and the adhesive molecule. The three interactions can significantly enhance the interaction between the filler and the binder matrix, and significantly improve the modulus and tensile strength of the composite propellant.

The invention relates to a polydopamine interface regulation-based nitramine explosive modified aluminum powder and a preparation method thereof. Micron-sized crystals containing an aluminum powder and a nitramine explosive are prepared by an anti-solvent process, uniform distribution and close contact of the aluminum powder and the nitramine explosive are achieved, and the crystals have the advantages of compact structure, high thermal stability and high density. The adoption of the polydopamine interface regulation-based nitramine explosive modified aluminum powder in an aluminum-containingexplosive reduces the content of an adhesive and additives in a formula, increases the mass fraction of the main explosive, and achieves the purpose of developing high-energy explosives. In addition,a part of the energetic material adopted to replace RDX, HMX, CL-20 and other nitramine explosives in traditional solid propellants improves the energy level of the propellants, improves the problem of too large viscosity of a propellant slurry, caused by the addition of nano-aluminum powder or high-aluminum powder, and optimizes the preparation technology of the propellants.

The invention relates to the field of energetic material synthesis, specifically 3,6,7-trinitramine[1,2,4]triazolo[4,3-b][1,2,4]triazole and its energetic materials Ionic salt and preparation, the compound in the present invention will have better application prospect in high-energy explosives. 6 kinds of energetic ion salts of trinitramine trihexamethylene, the tested density is relatively high, ranging from 1.65‑1.89 g / cm 3 . The theoretical detonation velocity calculated by EXPLO5 (v6.01) software of the energetic ion salt in the present invention is between 8519-9518 m / s, and the detonation pressure is between 27.6-41.1 GPa. The synthesis method of this kind of salt is simple, the condition is mild, the yield is high, and deionized water is mostly used as the reaction solvent, and the environment is friendly.

The invention discloses a butyl hydroxy aluminum-free propellant and a preparation method thereof. The raw materials comprise the following components in percentage by mass: 7.5%-8.0% of an adhesive,2.5%-3.5% of a plasticizer, 0.5%-1.0% of a curing agent, 63%-74% of an oxidant, 10%-20% of a nitramine explosive, 1.5%-2.5% of a combustion rate catalyst, 1.0%-3.0% of a combustion stabilizer and 0.5%-2% of a combustion rate regulator which is one or more of organic barium salt, amantadine derivative and ferrocenyl quaternary ammonium salt. The hydroxyl-terminated polybutadiene aluminum-free propellant provided by the invention has the characteristics of less smoke and low characteristic signal, and has lower combustion speed pressure index within the range of 16-24MPa, thereby ensuring the working stability of a high-pressure engine.

The invention provides a low burning rate and high energy solid propellant, and belongs to the technical field of solid propellants. The solid propellant comprises the following components in percentage by weight: 17.5 to 22.5% of plasticizer, 6 to 7.5% of adhesive, 6.0 to 8.0% of oxidant, 48.0 to 52.0% of energy containing explosive, 14.0 to 16.0% of metal fuel, and 1.0 to 4.0% of functional additive; wherein the plasticizer comprises a plasticizer A and a plasticizer B, the plasticizer A is composed of nitroglycerin (NG) and butanetrioltrinitrate (BTTN), and the plasticizer B is one or two of butyl nitroxyethyl nitramine (Bu-NENA) and trimethylolethanetrinitrate (TMETN). The provided propellant can solve the problem that low burning rate and high energy cannot be achieved at the same time. The propellant has a low burning rate and high energy, and the standard static burning rate can reach 9 mm / s or lower.