Influences of Mass Effect and Thermal History on Thermal Decomposition of Ammonium Nitrate

doi:10.3969/j.issn.1000-1093.2018.11.009

Abstract

Abstract: The differential scanning calorimetry (DSC), microcalorimeter and cook-off (CO) oven are used to study the influence of mass on the thermal decomposition characteristics of ammonium nitrate (AN), and DSC and microcalorimenter are used to study the effect of thermal history on the thermal decomposition characteristics of AN. The results show that the mass has a significant effect on the thermal stability of AN, and the measured decomposition temperatures of samples, including onset decomposition temperature and peak decomposition temperature, decrease with the increase in their mass sizes. The large mass sample is easy to explode, which ultimately decreases the thermal stability of AN. The decomposition temperatures drifts to low temperature direction greater and greater with the increase in temperature. This is mainly due to the autocatalytic chemical reactions which generate intermediate products during heating. It is necessary to avoid the storage of large mass of AN and keep the heat source off the storage location in the process of industrial production and storage.Key

Key words: ammoniumnitrate, masseffect, thermalhistory, thermaldecomposition, decompositiontemperature

CLC Number:

TQ564.4⁺2

CAO Xiong, ZHANG Yun, CAO Wei-guo, ZHANG Yu-long, DAI Peng, XUE Chen-lu, TAN Ying-xin. Influences of Mass Effect and Thermal History on Thermal Decomposition of Ammonium Nitrate[J]. Acta Armamentarii, 2018, 39(11): 2153-2158.

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第39卷
第11期2018 年11月兵工学报ACTA
ARMAMENTARIIVol.39No.11Nov.2018

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