Study on the Relationship between Particle Size and Firing Property of HNS-IV Based on Microfluidic Technology
- 摘要
|
- 图/表
|
- 访问统计
|
- 参考文献
|
- 相似文献
|
- 引证文献
|
- 资源附件
|
- 文章评论
摘要:六硝基茋（Hexanitrostilbene，HNS）作为爆炸箔起爆器（Exploding Foil Initiator,EFI）的许用装药，其性能直接影响到EFI的作用效果。本研究利用微流控技术制备了3种不同粒径的HNS-Ⅳ（D50分别为633，411，239 nm），并对其晶形结构、晶体形貌、爆压和发火感度等进行了表征和测试。结果表明，微流控技术能够制备不同粒径且形貌均一的HNS-Ⅳ。随着HNS-Ⅳ的D50从633 nm降至239 nm，兰利法测得的起爆阈值下降了18.7%，光子多普勒测速系统（PDV）测试并计算得到的爆压增加了12.3%。随着HNS-Ⅳ粒径的减小，其热稳定性逐渐降低，而对短脉冲的敏感度及爆压随之提升。但当粒径减小到一定程度时，不同粒径HNS的发火性能差异呈现收敛趋势。
Abstract:Hexanitrostilbene (HNS) is a licensed charge for Exploding Foil Initiator(EFI), and the performance of the agent directly affects the effect of EFI. In this paper, three different particle sizes of HNS-IV (D50 of 633, 411, 239 nm) were prepared by microfluidic technology, and their crystal structure, crystal morphology, explosion pressure, and firing sensitivity were characterized and tested. The results show that HNS-IV with different particle sizes and homogeneous morphology can be prepared using microfluidic technology. As the D50 of HNS-IV decreases from 633 nm to 239 nm, the initiation threshold measured by the Langley method is dropped by 18.7%, and the explosion pressure tested and calculated by Photonic Doppler Velometer (PDV) is increased by 12.3%. With the reduction of HNS-IV particle size, its thermal stability decreases, while its sensitivity to short pulses and explosion pressure increase. However, when the particle size decreases to a certain extent, the differences in firing property between HNS with different particle sizes show a convergent trend.
var swiper = new Swiper('.swiper_xq', {
navigation: {
nextEl: '.swiper-button-next',
prevEl: '.swiper-button-prev',
},
});
$(function(){
$('img').bigic();
});
jQuery(".slideTxtBox").slide({ trigger: "click" });
