Thermal Decomposition and Conductivity Characteristics of HAN Based Electrically Controlled Solid Propellants

被引：0
|
作者：
Bao L.R. [1 ,2 ]
Zhang W. [1 ,2 ,3 ]
Chen Y.Y. [1 ,2 ]
Chen S.H. [1 ,2 ]
Shen R.Q. [1 ,2 ]
Ye Y.H. [1 ,2 ]
机构：
[1] School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing
[2] Institute of Space Propulsion, Nanjing University of Science and Technology, Nanjing
[3] Key Laboratory of Special Energy Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing
来源：
Hanneng Cailiao/Chinese Journal of Energetic Materials | 2019年 / 27卷 / 09期
关键词：
Electrically controlled solid propellant(ECSP); Electron conductivity; Hydroxylamine nitrate(HAN); Thermal decomposition;
D O I：
10.11943/CJEM2019054
中图分类号：
学科分类号：
摘要：
In order to realize the reliable ignition and clarify combustion control mechanism of hydroxylamine nitrate (HAN) based electrically controlled solid propellant (ECSP), thermogravimetric differential scanning calorimetry mass spectrometry (TG DSC MS) and impedance frequency scanning techniques have been used. The effects of thermal decomposition behavior, decomposition products, pressure and temperature on conductivity of ECSP were studied independently. The results showed that compared with the pure HAN solution, the thermal stability of ECSP was improved. The initial decomposition temperature was raised by 11℃, whereas the peak temperature of exothermic peak was decreased by 24℃ with a broader exothermic temperature range. Combining the thermal decomposition behavior of ECSP with the mass spectrometry curves of the gaseous products, it could be concluded that the thermal decomposition process of HAN based ECSP might be divided into three steps: the thermal decomposition reaction of HAN, the interaction of the thermal decomposition products of HAN and the undecomposed HAN with polyvinyl alcohol (PVA), and the thermal decomposition of the residue components in ECSP. The electron conductivity of the ECSP was increased largely in the low frequency range (0-1000 Hz), but tended to be constant in the high frequency range (greater than 1000 Hz) as the frequency increased. With the increase of the pressure and temperature, the electron conductivity of the ECSP was increased. By raising the temperature to 150℃, the electron conductivity in the high frequency range was reduced by 2.92% compared with that obtained at 125℃. © 2019, Editorial Board of Chinese Journal of Energetic Materials. All right reserved.
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页码：743 / 748
页数：5
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