Method for preparing subject-object explosive with methanol molecules embedded in crystal cells

Abstract

The invention discloses a method for preparing subject-object explosive with methanol molecules embedded in crystal cells. The method includes preparing anhydrous CL-20 solution with methanol; carrying out supersaturation on the solution by the aid of low-temperature re-crystallization technologies; inducing CL-20 and the methanol molecules to carry out co-crystallization to form CL-20-based subject-object explosive crystals with highly ordered molecular stacking and the methanol molecules embedded in the crystal cells. The method has the advantages that the methanol molecules in the subject-object explosive crystals prepared by the aid the method are inlaid in cavities of the CL-20 crystal cells, compact stacked structures are formed, accordingly, energy density loss of the CL-20 can be effectively reduced, and the method is good in safety; the method includes simple preparation technologies, experimental conditions are mild, the methanol molecules can be embedded in the CL-20 crystalcells without high temperatures or high pressures, and novel ideas can be provided for modifying CL-20-based explosive and constructing high-energy and low-sensitivity explosive.

Description

technical field [0001] The invention relates to a method for preparing high-energy and low-sensitivity explosive crystals, in particular to a method for preparing host-guest explosives in which methanol molecules are embedded in unit cells. Background technique [0002] 2,4,6,8,10,12-Hexanitrohexaazaisowurtzitane (CL-20 or HNIW) is a high-energy explosive with a rigid cage structure. As one of the existing elemental explosives with the highest energy density, it has been been widely studied. The molecular formula of CL-20 is shown in the figure below: [0003] [0004] The performance of CL-20 is superior to 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) in many respects, its density is about 6.4% higher than that of HMX, the detonation velocity It is about 5.8% higher, the detonation pressure is about 12% higher, and the energy is about 14% higher, and it is expected to become a substitute for HMX. And the formula explosive based on CL-20 can significantly impro...

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Problems solved by technology

The experimental conditions of this method are extremely harsh, requiring extremely high pressure, and the operation is very dangerous. An explosion will occur if you are not careful, and limited by the volume of the pressure chamber, only a very small amount of samples can be obtained each time, even explosives. The sensitivity cannot meet the test, which is not conducive to the batch preparation of host-guest explosives with methanol molecules embedded in the unit cell. Therefore, it is necessary to explore a technology with simple preparation process, mild experimental conditions, and scalable preparation.

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