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Method for performing heat treatment on sensitized explosive

A technology for sensitizing explosives and heat treatment temperature, applied in explosives, explosives processing equipment, offensive equipment, etc., can solve problems such as dead pressure, easy degradation, poor stability, etc., and achieve improved detonation sensitivity, simple operation steps, impact sensitivity and friction Effect of Sensitivity Improvement

Active Publication Date: 2014-04-09
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthesis of these compounds is complicated, the stability is poor, and there are potential safety hazards in large-scale preparation.
In addition, tetrazole primers are also research hotspots to replace lead primers. However, some of these substances are easy to degrade, some are easy to form dead pressure, and some are equally toxic, so they are not ideal substitutes for primers.
[0003] Once the high explosive is detonated, it will have a higher detonation velocity and more violent destructive power. The main form of its explosion is detonation, but the high explosive has low sensitivity and considerable stability. It is currently difficult to apply to the primary explosive

Method used

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  • Method for performing heat treatment on sensitized explosive
  • Method for performing heat treatment on sensitized explosive
  • Method for performing heat treatment on sensitized explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] FOX-7 explosive sensitization test:

[0022] Step 1: Weigh 5g of explosive FOX-7 and put it into KSL-1100X box-type muffle furnace;

[0023] Step 2: Check the TG-DTA thermal property curve of explosive FOX-7, determine its initial decomposition temperature at 220°C, set the muffle furnace to heat to 220°C, and keep it warm for 1 hour;

[0024] Step 3: After naturally cooling down to room temperature, porous self-sensitized FOX-7 is obtained.

[0025] Depend on figure 1 and figure 2 It can be seen from the comparison that compared with ordinary FOX-7, the sensitized FOX-7 explosive crystals have obvious porous structure. Depend on image 3 N 2 It can be seen from the adsorption-desorption curve that the self-sensitized FOX-7 explosive has a mesoporous structure of 2.0-5.0 nanometers, and the measured specific surface area is 6.754m 2 / g, about the specific surface area of ​​expanded ammonium nitrate (0.33m 2 / g) 20 times. It can be confirmed from the data in Tab...

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Abstract

The invention discloses a method for performing heat treatment on a sensitized explosive, which comprises the following steps: performing heat treatment on an explosive, keeping the temperature for a certain time, and cooling to room temperature, thus obtaining the porous sensitized explosive, wherein the heat treatment temperature is the initial decomposition temperature of the explosive + / - 10 DEG C. According to the invention, the explosive is subjected to heat treatment at the initial decomposition temperature, so that part of the explosive is decomposed and solvent is volatilized; and in the method, no sensitizer needs to be added, and micro / nano pores are increased in explosive crystals, so that the sensitivity to initiation of the explosive is enhanced, thus achieving self sensitization effect.

Description

technical field [0001] The invention belongs to the field of energetic material sensitization, and relates to a method for sensitizing explosives, in particular to a method for heat-treating sensitized explosives. The method utilizes hot spot theory to increase the defect density of sensitized explosives. Background technique [0002] With the rapid development of the military industry, primary explosives, as important pyrotechnic agents, are more and more widely used in military and civilian detonators, flash caps, primers and igniters. In actual production and life, the most commonly used detonators include lead azide, lead styphate, dinitrodiazophenol, GTG, etc. Most of these traditional detonators contain lead compounds, which produce toxic smoke when burned, which will harm the human body and the environment. cause serious damage. In order to solve the problem of environmental pollution caused by the use of traditional primary explosives, people have long been committe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B21/00
Inventor 李婷婷王军杨光成李瑞
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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