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《Chinese Journal of Explosives & Propellants》 2006-06
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Mechanical Sensitivity of AP with Different Particle Size

WANG Cai-Ling,ZHAO Sheng-Xiang(Xi′an Modern Chemistry Research Institute,Xi′an 710065,China)  
Effect of particle size of AP,ranged from 2.7μm to 100μm,on impact sensitivity and friction sensitivity is systematically studied by the standarization methods GJB77A-97-601.1 and GJB77A-97-602.1.The results show that the friction sensitivities and impact sensitivities of AP increase with the reduction of particle size,considering that the energy consumption for cracking big size particles into small ones,the small friction among the big size particles and the sudden extinguishment thermal decomposition of big size particle,lead big size particles to a decrease of impact sensitivities and the plastic deformation,viscous flow and the part friction of crystal of small size particles result in an increase of friction sensitivities.The mechanism and factors affecting mechanical sensitivity are theoretically analyzed from the point of view of physico-chemical changes of AP under mechanism.
【CateGory Index】: TQ564
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Chinese Journal Full-text Database 2 Hits
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【Co-references】
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1 JIN Shao-hua~1,WU Xiu-mei~1,WANG Wei~2,SONG Quan-cai~1(1 School of Science of Materials and Engineering,Beijing Institute of Technology,Beijing 100081,China;2 China North Chemical Industries Corporation,Beijing 100045,China);Effect of coating method of polymer ε-HNIW on impact sensitivity of different samples[J];Journal of Safety and Environment;2005-05
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