Study on the thermal decomposition kinetics of DNTF

Jiangshan Gu,Liping Chen,Zichao Guo,Wanghua Chen,Lu Liu,Huanhuan Chen,L Duan,A.Z Abdullah

doi:10.1051/e3sconf/202124501027

Jiangshan Gu, Liping Chen + Show 6 more

Open Access

https://doi.org/10.1051/e3sconf/202124501027

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Abstract

3,4-Dinitrofurazanylfuroxan (DNTF) is a representative of the third-generation energetic materials with complex thermal decomposition behavior. Understanding thermal decomposition process of DNTF is of great significance for the safety of its production, storage and use. In this paper, the dynamic differential scanning calorimetry (DSC) test is carried out to study its thermal decomposition characteristics. The quench and reheat experiments and isothermal tests were performed to determine the types of decomposition reactions. A four-step consecutive reaction model, A→B→C→D→E, where each step is an N-order reaction was established for the decomposition process. The established kinetic models were verified by 250°C isothermal test.

Highlights

Understanding the thermal decomposition kinetics of energetic materials is of great significance to the safety of storage and transportation
Sinditskii et al [3] found that there is a secondary decomposition reaction of DNTF, and established a two-step reaction model based on the isothermal differential scanning calorimetry (DSC) curve in the liquid phase, which includes two independent first-order reactions
The conclusions are as follows: (1) DSC test results show that the thermal decomposition of DNTF contains three obvious exothermic peaks P1, P2, P3, which shows that the thermal decomposition of DNTF includes at least three reactions

Summary

Introduction

Understanding the thermal decomposition kinetics of energetic materials is of great significance to the safety of storage and transportation. Sinditskii et al [3] found that there is a secondary decomposition reaction of DNTF, and established a two-step reaction model based on the isothermal DSC curve in the liquid phase, which includes two independent first-order reactions. Existing researches mostly use Kissinger method or Ozawa method to solve their kinetic parameters, or use a single-step reaction model to approximate their thermal decomposition process, leading to deviations in the calculation results. In order to obtain more accurate kinetics of energetic materials, a multi-step reaction model must be established to describe its thermal decomposition behavior more accurately

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Conclusion