期刊
CELLULOSE
卷 26, 期 17, 页码 9021-9033出版社
SPRINGER
DOI: 10.1007/s10570-019-02691-8
关键词
Nitrocellulose; N-methyl-4-nitroaniline; Stabilizer; Isothermal decomposition; Storage life
资金
- Science Challenge Project [TZ2018004]
- Natural Science Foundation of China [21875192]
- Key Projects of the Pre-research Fund of the General Armament Department [6140720020101]
- National Defense Technology Foundation Project [JSJL2016404B002]
- Institute of Chemical Materials, China Academy of Engineering Physics [18zh0079]
The influence of N-methyl-4-nitroaniline (MNA) on the thermal stability of nitrocellulose (NC) was investigated via an isothermal decomposition dynamics research method. The Arrhenius equation and model-fitting were used to calculate the thermal decomposition kinetic parameters of NC and MNA/NC (3 wt%) composite. Results showed that the thermal decomposition activation energy of NC/MNA (3 wt%) was significantly increased compared with that of pure NC, indicating that the thermal stability of NC was increased with stabilizer MNA addition. Subsequently, the storage life of NC and MNA/NC (3 wt%) composite was estimated using Berthelot equation. It was found that if the decomposition extent reaches 0.1% as the end of life criterion, 3 wt% stabilizer MNA addition significantly extended the storage life of NC from 10.57 to 24.9 years at ambient temperature (298.15 K) with the life extension rate reaching 135.6%. Furthermore, the intermediate product produced by MNA and NC action was extracted and characterized via UV-Vis, HPLC, H-1 NMR, FT-IR, and LC-MS, and a possible stabilization mechanism of MNA to NC was proposed.
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