Preparation method of ammonium perchlorate and crown ether eutectic oxidant

Abstract

The invention discloses a preparation method of an ammonium perchlorate and crown ether eutectic oxidant. The preparation method is characterized by comprising steps as follows: 1-4 g of ammonium perchlorate is added to a crystallizing agent, the temperature is controlled in a range from 25 DEG C to 50 DEG C, an ammonium perchlorate saturation solution is obtained through dissolving and filtering, and then 2-6 g of crown ether is added to the ammonium perchlorate saturation solution, and the mixture is dissolved and filtered to obtain an ammonium perchlorate and crown ether mixed saturation solution; the ammonium perchlorate and crown ether mixed saturation solution obtained in the step one is filtered, filtrate obtained after the filtration is put in a beaker, the beaker is left to stand in a constant-temperature incubator, the filtrate is evaporated, and the ammonium perchlorate and crown ether eutectic oxidant is obtained after crystal cell formation, crystal grain growth, crystal formation, filtering and drying are performed sequentially. The preparation method of the ammonium perchlorate and crown ether eutectic oxidant has the benefits as follows: in order to reduce moisture absorption performance of ammonium perchlorate, ammonium perchlorate and crown ether form eutectic crystal, so that the moisture absorption performance is effectively reduced by the aid of the eutectic crystal, meanwhile, the sensitivity is reduced, and the application range is broadened.

Description

technical field [0001] The invention belongs to the technical field of energetic materials, and in particular relates to a preparation method of ammonium perchlorate and crown ether eutectic oxidant. Background technique [0002] As a special energetic material, propellant is the power source of today’s rockets, missiles and space vehicle engines, and plays an important role in the development of missiles and aerospace technology. Provide sufficient oxygen, which generally accounts for 50%-80% of the mass of the propellant. The combustion performance of the oxidant directly determines the combustion performance of the propellant, which in turn affects its specific impulse and other important properties. The effect of action has an important influence. [0003] Commonly used oxidants in propellants include ammonium perchlorate, ammonium nitrate, and the new oxidant ammonium dinitramide, but all of these oxidizer molecules contain ammonium radicals. Due to the strong hygrosco...

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Problems solved by technology

[0006] The invention overcomes the disadvantages that the internal structure of the oxidant cannot be changed and the problems of strong hygroscopicity and agglomeration cannot be solved by using traditional methods such as recrystallization (spheroidization) and polymer coating to modify the oxidant in the prior art. Provide a method to reduce the hygroscopicity of ammonium perchlorate, form a cocrystal with crown ether, realize the eutectic to effectively reduce hygroscopicity, reduce its sensitivity, and expand the application range of ammonium perchlorate and crown ether cocrystal oxidant preparation method

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