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| Thermal Decomposition of Extinguished AP/HTPB Base Bleed Propellant under Condition of Transient Depressurization |
| Received:December 13, 2021 Revised:March 14, 2022 |
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| DOI：10.7643/issn.1672-9242.2022.03.007 |
| KeyWord:thermal decomposition DSC extinguished under condition of transient depressurization AP/HTPB base bleed propellant kinetic parameters |
| Author | Institution |
| SHEN Hui |
Haiying Enterprise Group Co., Ltd., Wuxi , China |
| XU Chong |
Haiying Enterprise Group Co., Ltd., Wuxi , China |
| ZHANG Pei-xin |
Haiying Enterprise Group Co., Ltd., Wuxi , China |
| LIU Yong-qiang |
Haiying Enterprise Group Co., Ltd., Wuxi , China |
| XU Peng |
Haiying Enterprise Group Co., Ltd., Wuxi , China |
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| Abstract: |
| In order to analyze the characteristics of extinguished AP/HTPB base bleed propellant under condition of transient depressurization, the extinguished AP/HTPB base bleed propellant samples were prepared by semi-closed bomb. Thermal decomposition experiments of the micro samples were carried out by using DSC at three heating rates, the experimental results were comparatively analyzed with the original samples. The results show that at the same heating rate, the shape of exothermic peak in the DSC curve of the extinguished AP/HTPB base bleed propellant under condition of transient depressurization changed from the "M-type" to "inverted V-shaped", and the peak temperatures is lower than the exothermic peak temperature of the original sample. The activation energy of endothermic peak is 7.2%~62.5% higher than that of the original sample, but the activation energy of the exothermic peak is 14%~21% lower than that of the original sample. |
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