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Small-charge thermal explosion gas collecting device and gas analysis method

A collection device and gas analysis technology, which is applied in measurement devices, analytical materials, sampling devices, etc., and can solve problems such as difficulty in obtaining samples, large doses of drugs, and gas interference.

Active Publication Date: 2018-12-25
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

For the analysis of the products of the explosive gas of energetic materials, the energetic materials are mainly placed in the explosion tank for detonation, and the gas collected by the explosion tank is used for sampling and analysis. However, this method has the following disadvantages: 1) The amount of charge is large, usually At least 1g of explosives are required for detonation, and it is difficult to obtain sufficient sample volume for energetic materials in the exploration stage
2) In order to form an explosion, the sample mainly exists in the state of PBX. Due to the existence of the binder, it will interfere with the gas produced by the explosion of the simple explosive

Method used

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  • Small-charge thermal explosion gas collecting device and gas analysis method

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Embodiment 1

[0033] Weigh 10 mg of HMX elemental explosive and place it in the base, plug it into the plug, and place it in the barrel, use a pressurizing device to pressurize 0.25MPa, fix the plug in the base, and seal the sample inside the barrel. Then place the gun barrel inside the gas tank, seal the gas tank, replace the gas inside the gas tank by vacuuming and gas replacement, and set the initial atmosphere before the thermal explosion of the explosive according to requirements. Place the gas collection tank containing the sample in Wood's metal heated to the specified temperature (330°C), take out the gas collection tank after hearing the explosion, and cool it to room temperature. Connect the gas collection tank to the gas chromatograph, measure the gas pressure (132.15KPa) in the gas collection tank, and calculate the volume of the gas generated by the thermal explosion of the HMX simple substance explosive according to the rational gas state equation (580L, standard condition, thi...

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Abstract

The invention discloses an analysis method for testing a thermal explosion gas product of explosives, and provides a small-charge thermal explosion gas collecting device. During testing, a small amount of explosives are pressed into the cartridge, placed in a gas collection tank; the gas collection tank is placed in a high-temperature heating medium, the explosives are rapidly heated and exploding, the gas collecting tank is taken out, and a thermal explosion gas product of explosives is obtained. The total amount and composition of the thermal explosion gas product of explosives can be analyzed by directly connecting the collecting device to a gas chromatography-mass spectrometer or mass spectrometer. The method can realize collection and analysis of a small-charge thermal explosion gas product, and can be used for researching energetic materials, in particular the thermal explosion reaction mechanism of energetic materials in the exploration phase.

Description

technical field [0001] Practices of the present invention relate to the field of energetic material analysis, and more particularly, embodiments of the present invention relate to the analysis of gas products of thermal explosions of energetic materials. Background technique [0002] In the design of high-performance energetic materials, multi-nitrogen energetic compounds are an important development direction. At present, some high-nitrogen single-substance explosives with good application potential have begun to gradually break away from the restriction of nitro explosive groups, and their stability has been substantially improved, and they have the characteristics of high energy and low sensitivity. For example, TKX-50 is composed of two tetrazole rings and does not contain traditional nitrate detonating groups. Understanding the energy release mechanism of these new energetic materials is of great significance for their structure optimization and formulation design. The...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N1/22G01N1/24
CPCG01N1/22G01N1/24G01N30/02
Inventor 赵川德彭强杨芳齐天骄王新峰余堃左继
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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