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Method for quantitatively evaluating initiating ability of porous explosives

A technology of quantitative evaluation and explosives, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as no quantitative evaluation method

Active Publication Date: 2019-04-30
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the detonation process of porous explosives is in the stage of perceptual understanding, and there is no quantitative evaluation method

Method used

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  • Method for quantitatively evaluating initiating ability of porous explosives
  • Method for quantitatively evaluating initiating ability of porous explosives
  • Method for quantitatively evaluating initiating ability of porous explosives

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Experimental program
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Embodiment Construction

[0018] Below in conjunction with embodiment the present invention will be further described.

[0019] 1. Shock wave sensitivity experiment

[0020] Passivated RDX as the main drug (Ф40×30mm, ρ=1.675g / cm 3 ), according to Q / AY153-90 to determine the shock wave initiation sensitivity of dense explosives. The shock wave sensitivity experiment was carried out for the selected CL-20 and HMX-based explosive samples, and the results showed that: the critical partition thickness value of the HMX-based explosive sample with a 50% probability of detonation is 40.50mm, and the CL-20-based explosive sample has a 50% probability of detonation. The critical separator thickness value of H is 49.51mm.

[0021] 2. Critical detonation pressure

[0022] The experiment uses a manganese copper sensor. For the plexiglass partition, the thickness of the partition is 0-55mm, set test points every 10mm, record the shock wave pressure value of each point, and obtain the shock wave generated by the d...

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Abstract

The invention discloses a method for quantitatively evaluating the initiating ability of porous explosives and solves problems that the initiating ability of the porous explosives of different types and different structures cannot be quantified and is difficult to compare with each other in the prior art. The method is advantaged in that the method starts from a critical initiating pressure valueof the explosives, in combination with the material micropore hole collapse theory, the initiating ability of the porous explosives is evaluated through the hole collapse pressure and the collapse characteristic time.

Description

technical field [0001] The invention relates to the detonation performance of porous explosives, in particular to a quantitative evaluation method for the detonation ability of porous explosives. Background technique [0002] Semyonov's thermal explosion theory is based on the premise that the internal temperature change of the explosive system is consistent and the temperature equilibrium is quickly reached. However, in fact, the detonation mechanism of explosives is a rather complicated process. At present, the detonation mechanism of explosives under mechanical action is generally accepted. is the hot spot theory. The hot spot theory holds that when the mechanical impulse acts on the explosive, the mechanical energy is converted into thermal energy, but the thermal energy is not uniformly distributed but concentrated on some local points inside the explosive. When the explosive decomposition reaction at these points satisfies Q 1 >Q 2 and When the size of the hot s...

Claims

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Application Information

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IPC IPC(8): G01N33/22G01N23/2251
CPCG01N23/2251G01N33/227
Inventor 邢晓玲傅丹李文祥刁小强方伟
Owner XIAN MODERN CHEM RES INST