Effect of Particle Size and Morphology on the Sensitivity of ε-HNIW

GUO Xue-yong;JIANG Xia-bing;YU Lan;ZHANG Pu;JIAOQing-jie;WANG Zheng-hong;CHANGSheng-quan

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    Published By: Chinese Journal of Explosives & Propellants

    CN 61-1310/TJ

Chinese Journal of Explosives & Propellants ›› 2013, Vol. 36 ›› Issue (1) : 29-33.

Effect of Particle Size and Morphology on the Sensitivity of ε-HNIW

  • GUO Xue-yong, JIANG Xia-bing, YU Lan, ZHANG Pu, JIAOQing-jie, WANG Zheng-hong, CHANGSheng-quan
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Abstract

Three kinds of ε-HNIW samples withdifferent particle size and morphology were prepared by drowning out recrystallization,and characterized by laser granularity measurement, polarization microscope andscanning electron microscope (SEM). The impact and friction sensitivity weretested and the thermal stability of HNIW samples were recorded by differentialscanning calorimetry (DSC). Results indicated that the impact sensitivity ofHNIW reduced rapidly with decreasing of particle size, thermal stability ofHNIW reduced slowly. However, the friction sensitivity increased graduallyalong with the decreasing of particle size. HNIW with broad size distributionhad higher mechanical sensitivity and thermal stability than samples withnarrow size distribution. The HNIW with regular morphology had lower mechanicalsensitivity and better thermal stability than samples with irregular crystals.The order of influencing factors on impact, friction and thermal decompositionof HNIW are particle size, size distribution and morphology.

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GUO Xue-yong, JIANG Xia-bing, YU Lan, ZHANG Pu, JIAOQing-jie, WANG Zheng-hong, CHANGSheng-quan. Effect of Particle Size and Morphology on the Sensitivity of ε-HNIW. Chinese Journal of Explosives & Propellants. 2013, 36(1): 29-33

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