36 results about "Nitroamine" patented technology

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 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.