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Method for densifying FOX-7 explosives induced by lattice intercalation

A FOX-7, densification technology, used in explosives, explosives processing equipment, nitrified explosives components, etc., can solve the problems of not mentioning the relevant data of density enhancement, complex two-dimensional material process flow, high cost, and achieve a higher cost of raw materials. Low, improved detonation performance, high crystal density effect

Inactive Publication Date: 2019-10-25
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patents [CN107540019B] and [CN109502578A] respectively developed a method for preparing a molybdenum disulfide / graphene and vanadium oxide nanosheet / graphene alternate intercalation structure material. The above two reports confirmed that two-dimensional materials can pass through Complementary lattice intercalation, but no density enhancement related data
Judging from the existing public information, the preparation of lattice intercalation type two-dimensional materials still has problems such as complex process, high cost, and difficulty in scaling up. At the same time, there is no lattice intercalation modification technology for FOX-7 Densified reports

Method used

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  • Method for densifying FOX-7 explosives induced by lattice intercalation
  • Method for densifying FOX-7 explosives induced by lattice intercalation
  • Method for densifying FOX-7 explosives induced by lattice intercalation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 0.36g of triaminoguanidine nitrate and 2.25g of FOX-7, add 45mL of dimethyl sulfoxide to the reactant (at this time the solute concentration is 58mg / mL), heat to 105°C to mix the reactant evenly The glyoxal of 0.41g was added to the above-mentioned hot solution, and after stirring and reacting for 60 minutes at a rotating speed of 500rpm, a mixed solution was obtained; 45mL deionized water was added to the mixed solution to separate out the product; finally, the product was filtered, washed with deionized water, After vacuum drying, a high-density FOX-7-based composite material can be obtained with a yield of 98.7%.

example 1

[0029] The flow chart of the high-density FOX-7 base composite material prepared by example 1 is shown as figure 1 shown.

[0030] The high-density FOX-7 base composite material prepared by example 1 is carried out scanning electron microscope (SEM) observation, scanning electron microscope result is as follows figure 2 and image 3 shown. It can be seen from the figure that the FOX-7 crystal has a good degree of recombination, no single two-dimensional conjugated material body is found, and the crystal structure is dense and the plane shape is obvious.

[0031] The high-density FOX-7 based composite material prepared in Example 1 is subjected to vacuum density analysis by gas displacement method, and the density test result is 1.9826g / cm 3 .

Embodiment 2

[0033] Weigh 0.36g of triaminoguanidine hydrochloride and 0.96g of FOX-7, add 13mL of thionyl chloride to the reactant (at this time the solute concentration is 102mg / mL), heat to 70°C to mix the reactant evenly ; 0.58g of formaldehyde solution was added to the above-mentioned hot solution, and after stirring and reacting at 100rpm for 120 minutes, a mixed solution was obtained; 13mL of deionized water was added to the mixed solution to precipitate the product; finally, the product was filtered, washed with deionized water, and vacuum-dried High-density FOX-7-based composite materials can be obtained with a yield of 96.9%

[0034] The high-density FOX-7 composite material that example 2 prepares adopts gas replacement method to carry out vacuum density analysis, and the density test result is 1.9013g / cm 3 .

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Abstract

The invention discloses a method for densifying FOX-7 explosives induced by lattice intercalation, and relates to the technical field of preparing novel composite materials. The method aims at the shortage of low FOX-7 lattice stacking density, and selects a high-nitrogen two-dimensional material as intercalation molecule to obtain a kind of two-dimensional material intercalation modified FOX-7-based new high-density explosive. The method comprises the following steps: step 1: adding an organic solvent into high-nitrogen two-dimensional polymer monomer material and 1,1-diamino-2,2-dinitroethylene (FOX-7) according to a certain ratio and a certain concentration, heating to a certain temperature; step 2, adding that organic aldehyde solution into the hot solution of the step 1, maintaining the temperature of the step 1, and reacting for a certain time at a certain stirring rate; step 3, adding antisolvent with the volume equal to that volume of the solvent in the step 2 to precipitate the product; after centrifugation and drying of the product, obtaining the high density FOX-7 matrix composite.

Description

technical field [0001] The invention belongs to the technical field of preparation of novel composite materials, and in particular relates to a method for inducing densification of FOX-7 explosives by lattice intercalation. Background technique [0002] As a relatively promising insensitive explosive, 1,1-diamino-2,2-dinitroethylene (FOX-7) was first reported and synthesized by Latypov et al. Possibility of Sensitive Ammunition [Propellants, Explos. Pyrotech. 1993, 18, 1]. The molecular configuration of FOX-7 is a wavy layered structure, and the layers are mainly composed of hydrogen bonds. When the layers are stimulated by the outside world, the mutual sliding between the layers can buffer part of the external stress, so it has better safety performance[ Acta Pyrodynamics, 2009, 32: 6]. However, because the wavy crystal structure has a large internal space that is not filled, the degree of lattice packing is not high, and the crystal density is low (1.885g / cm 3 ), so the...

Claims

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Application Information

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IPC IPC(8): C06B25/00C06B21/00
CPCC06B21/0016C06B25/00
Inventor 赵煦杨志剑严启龙刘佳辉巩飞艳张庆华
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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