微通道点传火临界直径及其传火稳定性影响因素研究

摘要：研究纳米铝热剂在微通道中的装药方式及燃烧规律可以为实现微电子机械系统（MEMS）中纳米铝热剂稳定燃烧提供一定指导。国内外把关于微尺度燃烧机理及特性的研究均视为热点，再加上纳米科技的发展使得纳米铝热剂在微电子机械系统中的应用前景被广泛看好。本论文通过实验研究纳米Al/CuO微通道中的燃烧规律，以燃速作为表征燃烧特性的一个重要参量，探究微通道直径、硝化棉（NC）添加量、装药密度、气体动力学等因素对微通道点传火燃烧特性的影响规律。实验结果表明：在内径为0.6mm，1.0mm，3.2mm的石英管中，药柱均可以稳定点传火；随着NC含量的增加，药柱燃速明显增大；随着微通道中装药密度的增加，药柱燃速逐渐降低；燃烧所生成气体的推动力会使得药柱的燃速有一定程度的增加。

关键词纳米Al/CuO 微通道燃烧特性燃速装药密度

毕业设计说明书外文摘要

Title Studies on the influencing factors of ignition and combustion characteristics in micro-channels

Abstract：It is possible to study the charging method and the combustion law of nanoscale thermite in micro channels to provide some guidance for realizing the stable combustion of nanoscale thermite in Micro-Electro-Mechanical-System (MEMS).The study on the micro-scale combustion mechanism and characteristics are regarded as hot spots both domestic and foreign,coupled with the development of nano-technology , the application of nanoscale thermite in the MEMS are widely optimistic.In this paper, we study experimentally the combustion law of nano-Al/CuO in micro channels, propagation speed is an important parameter to characterize the combustion characteristics. We investigate the effects of micro channels diameter, nitrocellulose (NC) addition concentration, charge density, Gas dynamics and so on about ignition and transfer characteristics in micro channels. The results show that the Combustion reaction can steady propagate in micro channels with the inner diameter of 0.6mm, 1.0mm and 3.2mm.With the increase of NC addition, the burning speed is obviously increased.With the charge density increases in the micro channels, the burning speed is gradually reduced. The driving force of the combustion gas will make the burning speed increases.

Keywords Nano Al / CuO Micro-channels Combustion characteristics Burning Rate Charge Density

1 引言 1

1.1 研究背景与意义 1

1.2 国内外研究现状 1

1.2.1 国内研究现状 1

1.2.2 国外研究现状 3

1.2.3 纳米铝热剂的制备与表征 4

1.3 总结 5

1.4 本论文研究工作 5

2 纳米Al/CuO的制备与表征 7

2.1 纳米Al/CuO的制备 7

2.1.1 原材料准备 7

2.1.2 实验制备 7

2.2 纳米Al/CuO的表征 8

2.2.1 纳米Al/CuO形貌表征 8

2.2.2 纳米Al/CuO的燃烧性能 10

2.2.3 纳米Al/CuO的增压特性 11

2.2.4 纳米Al/CuO的静电感度微通道点传火临界直径及其传火稳定性影响因素研究:http://www.chuibin.com/huaxue/lunwen_206056.html