Explosive material thermal stability grading method based on adiabatic acceleration calorimetry

A technology of accelerated calorimetry and thermal stability, applied in the field of explosives, can solve the problems of inability to quantify the value one by one accurately, evaluation of the danger degree of difficult materials, and lack of quantitative criteria.

Pending Publication Date: 2020-12-04
XIAN MODERN CHEM RES INST
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Problems solved by technology

[0019] It can be seen from Table 1 that the temperature correction coefficient γ 1 The method of determination is a semi-quantitative method. Although there are corresponding evaluation parameter values, the actual operability is poor, and the values ​​cannot be accurately qua

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  • Explosive material thermal stability grading method based on adiabatic acceleration calorimetry
  • Explosive material thermal stability grading method based on adiabatic acceleration calorimetry
  • Explosive material thermal stability grading method based on adiabatic acceleration calorimetry

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Embodiment 1

[0065] The present invention is a thermal stability test and classification evaluation method for materials in the manufacturing process of propellants and explosives. The typical propellant and explosives: GX modified double-base propellant manufacturing process materials are used as the research object, and the thermal decomposition of materials is tested by adiabatic accelerated calorimetry. Reaction, through equations (6) ~ (10), apply the linear least square method to obtain the kinetic parameter apparent activation energy E of material thermal decomposition reaction a and pre-exponential factor A, and then obtain the maximum reaction rate arrival time TMR under adiabatic conditions of different hazard levels ad The required process temperature T p , and process temperature T with different hazard levels p And the ratio operating time coefficient δ is the scale, and the actual process temperature T of the material in the process is compared and measured ps and the actua...

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Abstract

The invention discloses an explosive material thermal stability grading method based on adiabatic acceleration calorimetry. According to the method, thermal decomposition reaction kinetic parameters are obtained according to the thermal decomposition characteristic quantity of materials in the explosive manufacturing process, then the process temperature Tp needed by the maximum reaction rate arrival time TMRad under different danger levels of heat insulation conditions is obtained, and the process temperatures Tp of different danger levels and the specific operation time delta are used as scales, comparing and measuring of the actual process temperature Tps and the actual process operation time ts of the materials in the process are carried out, quantitatively obtaining of a temperature correction coefficient gamma 1 of the thermal stability of the materials is realized, and quantitative grading evaluation is carried out by taking the temperature correction coefficient gamma 1 as thethermal stability level of the materials in the process.

Description

technical field [0001] The invention belongs to the technical field of explosives, and mainly relates to a process temperature T p A new method for thermal stability testing and grading evaluation of materials in the propellant and explosive manufacturing process with the ratio of operating time coefficient δ as the scale, especially related to the thermal stability grading method of propellant and explosive materials based on adiabatic accelerated calorimetry. Background technique [0002] As an energetic material, pyrotechnics are prone to combustion and explosion under thermal, static, mechanical and other stimuli. Carrying out the combustion and explosion risk assessment of pyrotechnics manufacturing process is an important content of safety production design and control. The materials in the explosives manufacturing process are poor conductors of heat and are extremely sensitive to thermal stimuli. When heated, they will undergo self-catalytic decomposition and exotherm...

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Application Information

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IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 黄蒙丁黎周静安静禄旭祝艳龙
Owner XIAN MODERN CHEM RES INST
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