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Nitrogen-rich energetic polymer powered aluminum particles with enhanced reactivity and energy content

文献类型：期刊论文

作者Li, Yaru2; Ren, Hui2; Wu, Xinzhou2; Wang, Huixin2; Yu, Xilong1; Yu XL(余西龙)
刊名SCIENTIFIC REPORTS
出版日期2022-05-25
卷号12期号:1页码:12
ISSN号2045-2322
DOI10.1038/s41598-022-12949-0
通讯作者Ren, Hui(renhui@bit.edu.cn)
英文摘要Aluminum particles are of significant interest in enhancing the energy release performance of explosives. One of the major impediments to their use is that Al2O3 shell significantly decreases overall performance. To address this issue, we investigate creating aluminum particles with a glycidyl azide polymer (GAP) coating to improve their reactivity while retaining their energy content. We found that the aluminum particles were coated with a GAP layer of thickness around 8.5 nm. The coated aluminum particles were compared to non-coated powder by the corresponding reactivity parameters obtained from simultaneous differential scanning calorimetry, thermal gravimetric analysis, coupled with mass spectral and infrared spectral analyses. Besides, the comparison on the energy content was also conducted based on P-t tests and a laser-induced air shock from energetic materials (LASEM) technique. It was found that GAP shifted the oxidation onset of aluminum particles to a lower temperature by similar to 10 degrees C. Besides, the oxidation activation energy of aluminum particles was also reduced by similar to 15 kJ mol(-1). In return, aluminum particles reduced the activation energy of the second stage decomposition of the GAP by 276 kJ mol(-1). And due to the synergistic effect between aluminum and GAP, the decomposition products of GAP were prone to be oxycarbide species rather than carbonitride species. In addition, the P-t test showed the peak pressure and pressurization rate of GAP coated aluminum particles were separately 1.4 times and 1.9 times as large as those of non-coated aluminum particles. Furthermore, the LASEM experiment suggested the shock wave velocity of the GAP coated aluminum particles was larger than that of non-coated aluminum particles, and the largest velocity difference for them could be 0.6 km s(-1). This study suggests after coating by GAP, the aluminum particles possess enhanced reaction performance, which shows potential application value in the fields of aluminized explosives and other energetic fields.
WOS关键词GLYCIDYL AZIDE POLYMER ; THERMAL-DECOMPOSITION ; PERFORMANCE ; LASER ; NANOPARTICLES ; FTIR ; GAP ; TEMPERATURE ; PROPELLANT ; COMBUSTION
资助项目National Natural Science Foundation of China[11832006] ; National Natural Science Foundation of China[U1530262] ; National Natural Science Foundation of China[21975024]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000802776400055
资助机构National Natural Science Foundation of China
源URL[http://dspace.imech.ac.cn/handle/311007/89648]  
专题力学研究所_高温气体动力学国家重点实验室
通讯作者Ren, Hui
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
2.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714		 Li, Yaru,Ren, Hui,Wu, Xinzhou,et al. Nitrogen-rich energetic polymer powered aluminum particles with enhanced reactivity and energy content[J]. SCIENTIFIC REPORTS,2022,12(1):12.
APA Li, Yaru,Ren, Hui,Wu, Xinzhou,Wang, Huixin,Yu, Xilong,&余西龙.(2022).Nitrogen-rich energetic polymer powered aluminum particles with enhanced reactivity and energy content.SCIENTIFIC REPORTS,12(1),12.
MLA Li, Yaru,et al."Nitrogen-rich energetic polymer powered aluminum particles with enhanced reactivity and energy content".SCIENTIFIC REPORTS 12.1(2022):12.

入库方式： OAI收割

来源：力学研究所

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