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Estimation on the Safe Storage Temperature of Nitrocellulose with Different Humectants
Author(s) -
Wei Rui Chao,
Huang Shen Shi,
Wang Zhi,
He Yu,
Yuen Richard,
Wang Jian
Publication year - 2018
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201800149
Subject(s) - nitrocellulose , autocatalysis , calorimeter (particle physics) , isothermal process , materials science , differential scanning calorimetry , thermodynamics , chemistry , physics , organic chemistry , optics , biochemistry , membrane , detector , catalysis
In order to estimate the safe storage temperatures of nitrocellulose (NC) with different humectants (water, ethanol, and isopropanol), non‐isothermal experiments were performed by a differential scanning calorimeter (DSC). Thermodynamic parameters were simulated by thermal safety software (TSS). Comparison of autocatalytic simulation and n th order simulation was conducted. Also, Kissiger‐Akahira‐Sunose (KAS) and Ozawa‐Flynn‐Wall (OFW) methods were employed to validate the simulated activation energy E , whose results indicated that the average E calculated by KAS and OFW methods is lower than that simulated by autocatalytic simulation. Finally, the critical temperatures of time to maximum rate (TMR) and time to conversion limit (TCL) were estimated. The results show that the critical temperature of pure NC is higher than that of NC with humectants, which indicates that NC with humectants possess a higher thermal instability at an identical temperature. In addition, to ensure the effectiveness of NC products, storage temperatures of pure NC and NC‐humectants were also simulated.