Mechanism research for reducing sensitivity of nitramine explosive particles by nanocrystallization based on critical electronic excitation energy (PDF)
MATERIALS CHINA[ISSN:1674-3962/CN:61-1473/TG]
Issue:
2017年第6期
Page:
31-35
Research Field:
前沿综述
Publishing date:
Info
Title:
Mechanism research for reducing sensitivity of nitramine explosive particles by nanocrystallization based on critical electronic excitation energy
National Special Superfine Powder Engineering Research Center of China, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu
Keywords:
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CLC:
PACS:
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DOI:
10.7502/j.issn.1674-3962.2017.06.04
DocumentCode:
Abstract:
The state, that the nitramine explosive particle is starting to decompose exhibiting cracks on its surface, is observed and recorded using the S-4800II Fielding Emission Scanning Electron Microscope (FESEM), the Image Pro Plus (IPP) System is employed to obtain the projected area of that decomposed particle in the FESEM image, and the critical electronic excitation energy (CEEE) of the nitramine explosive particle is calculated. Result has shown that: when the particle size is above 10μm, the CEEE value is decreased with the reduction of particle size; when the particle size is under about 10μm, the CEEE value is sharply increased with the reduction of particle size; when the particle size is about 0.5μm, the CEEE value is almost not increased with the reduction of particle size. Based on the CEEE, it is very helpful to explain the mechanism for reducing sensitivity of nitramine explosive particles by nanocrystallization, so as to provide a theoretical support for practical application of nano-sized nitramine explosives.