Effects of Diphenylamine on Isothermal Thermal Decomposition Kinetics of Nitrocellulose

被引：0

作者：

Luo L.-Q. ^{[1
]}

Chai Z.-H. ^{[1
]}

Jin B. ^{[1
]}

Huang Q. ^{[1
]}

Chu S.-J. ^{[1
]}

Peng R.-F. ^{[1
]}

机构：

[1] State Key Laboratory of Environmental-friendly Energy Materials, Southwest University of Science and Technology, Mianyang

来源：

Hanneng Cailiao/Chinese Journal of Energetic Materials | 2019年 / 27卷 / 12期

关键词：

Diphenylamine; Isothermal thermal decomposition; Kinetics; Nitrocellulose; Storage life;

D O I：

10.11943/CJEM2019118

中图分类号：

学科分类号：

摘要：

The influence of diphenylamine (DPA) on the thermal stability of nitrocellulose (NC) was investigated by isothermal decomposition kinetics. Pressure versus time curves of the gas generated by the thermal decomposition of NC/DPA (3%) mixed sample at 378.15-398.15 K were obtained by using the isothermal decomposition gas metering device. There is a visible inflection point in this curve. The thermal decomposition kinetic parameters of NC/DPA (3%) composite were calculated by Arrhenius equation and model-fitting method. The storage life of NC and NC/DPA composite was estimated using Berthelot equation. The results show that the activation energy of NC/DPA (3%) before the inflection point is 164.6 kJ•mol-1, and the activation energy of NC/DPA (3%) mixed sample after the inflection point is 150.4 kJ•mol-1. Compared with the NC raw material, the activation energy of NC/DPA (3%) before the inflection point is increased by 17.7 kJ•mol-1. With a decomposition extent of 0.1% as the criterion, the storage life of NC/DPA (3%) at room temperature is 18.3 years, indicating that the storage life of NC can be extended by 7.7 years after the addition of 3%DPA. © 2019, Editorial Board of Chinese Journal of Energetic Materials. All right reserved.

引用

页码：991 / 997

页数：6

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