期刊
PROPELLANTS EXPLOSIVES PYROTECHNICS
卷 42, 期 7, 页码 809-815出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/prep.201600237
关键词
Ammonium perchlorate (AP); Propellants; Sensitivity; Hygroscopicity
资金
- National Natural Science Foundation of China [NSFC 11502243, 11502245, 11402238]
In this research, several inert materials, including some functional carbon materials, paraffin wax and the well-known insensitive energetic material 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) were selected to reduce the undesirable high sensitivity and hygroscopicity of ultra-fine ammonium perchlorate (UF-AP) via polymer modified coating. Structure, sensitivity, thermal and hygroscopicity performances of the UF-AP based composites were systematically studied by scanning electron microscopy, sensitivity tests, thermal experiments, contact angle, and hygroscopicity analysis. The results showed that both the impact and friction sensitivity of UF-AP can be remarkably reduced, respectively, with only a small amount of 2% (in mass) desensitization agents. Meanwhile, improved thermal decomposition was gained, and the hygroscopicity can also be reduced to a large extent. Propellants containing 10% coated UF-AP in mass were processed and tested, the burning rate reached 45.7mms(-1), 50% higher compared with that of normal AP, with remarkably reduced impact sensitivity from 11.5J to 29.6J and friction sensitivity from 76% to 28%.
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