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Micro heat thermal method for quantitative evaluation on thermal stability of double-base propellant

A double-base propellant and micro-calorific heat technology, which is applied in the direction of material thermal development, can solve the problems of lack of criteria, inability to perform quantitative evaluation, poor operability and other problems in the thermal stability of double-base propellants, and achieve reliable experimental results High reliability, strong method practicability, and mild experimental conditions

Inactive Publication Date: 2019-03-15
XIAN MODERN CHEM RES INST
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Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that existing differential scanning calorimetry evaluates the thermal stability of double-base propellants due to lack of criteria, quantitative evaluation, no concept of time, and poor practical operability

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  • Micro heat thermal method for quantitative evaluation on thermal stability of double-base propellant
  • Micro heat thermal method for quantitative evaluation on thermal stability of double-base propellant
  • Micro heat thermal method for quantitative evaluation on thermal stability of double-base propellant

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Embodiment 1

[0059] The micro-calorimetric method of the present invention quantitatively evaluates the thermal stability of double-base propellants, and is characterized in that the method does not require any complicated and dangerous sample pretreatment process, and uses a micro-calorimeter to track the dynamics of the decomposition and heat generation of double-base propellants Real-time change and its change law, obtain the correlation between the critical characteristics of accelerated decomposition and the decomposition process, select the inflection point of decomposition acceleration as the critical criterion, and establish the thermal stability criterion of calorimetry; The equivalence relationship forms a new method for evaluating the thermal stability of double-base propellants by microcalorimetry. Then, a single-temperature isothermal microcalorimetry experiment was carried out to track the experimental time when the heat of decomposition of the double-base propellant reached t...

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Abstract

The invention discloses a novel micro heat thermal method for evaluating thermal stability of a double-base propellant. The micro heat thermal method is characterized by comprising the following steps: carrying out thermal decomposition experiment on a double-base propellant by using a micro heat thermal meter in an isothermal mode, tracking and monitoring heat release quantities or change of thermal flows of the double-base propellant along with time and temperatures, illuminating the decomposition process of the double-base propellant, studying quantitative relationships of the decompositionprocess and decomposition characteristic parameters of heat release quantities, thermal flows, and the like, confirming a decomposition acceleration inflection point, providing critical threshold conditions that the thermal stability of the double-base propellant has sudden change, acquiring double-base propellants based on the heat release quantities, carrying out thermal decomposition kinetic parameter study on the double-base propellant, and establishing a time-temperature equivalent relationship under the thermal action of the double-base propellant. With the stability criterions, a novelmethod for quantitative evaluation on thermal stability of the double-base propellant is established, and the blank of methods for quantitative evaluation on thermal stability of the double-base propellant from the aspect of decomposition heat release can be made up.

Description

technical field [0001] The invention belongs to the technical field of safety evaluation of propellants and explosives, and relates to a thermal stability evaluation method of a double-base propellant. In particular, a microcalorimetric method is used to study the thermal stability of double-base propellants. Based on the correlation between the heat of decomposition of double-base propellants and the decomposition process, a quantitative criterion of stability based on the heat of decomposition of double-base propellants is formed. Combined with the time-temperature equivalence relationship, a new method for microcalorimetric thermal evaluation of the thermal stability of double-base propellants was established. Background technique [0002] Thermal performance is one of the characteristic properties of explosives as a special energy source that distinguishes them from other materials. It not only determines the energy release process of the working state of explosives, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 周静丁黎张俊林黄蒙安静祝艳龙
Owner XIAN MODERN CHEM RES INST
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