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

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...

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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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