Ti/CuO微波点火及其微波增强燃烧特性  

Microwave Ignition and Microwave Enhanced Combustion Performance of Ti/CuO

作　　者：陈小远 王飞[3] 唐魁 崔连鹏 柯香 陈苏杭 徐抗震[1] CHEN Xiao-yuan;WANG Fei;TANG Kui;CUI Lian-peng;KE Xiang;CHEN Su-hang;XU Kang-zhen(School of Chemical Engineering,Xi′an Key Laboratory of Special Energy Materials,Northwest University,Xi′an 710069,China;State Key Laboratory of Transient Chemical Effects and Control,Xi′an 710061,China;Academy of Aerospace Solid Propulsion Technology,Xi′an 710025,China;School of Chemistry and Materials Engineering,Anhui Science and Technology University,Bengbu Anhui 233000,China)

机构地区：[1]西北大学化工学院/西安市特种能源材料重点实验室,陕西西安710069 [2]瞬态化学效应与控制全国重点实验室,陕西西安710061 [3]航天动力技术研究院,陕西西安710025 [4]安徽科技学院化学与材料工程学院,安徽蚌埠233000

出　　处：《火炸药学报》2025年第3期209-215,I0003,共8页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金(No.22375160);应用物理化学重点实验室开放课题基金(No.WDYX22614260206);安徽省自然科学基金(No.2108085QE199)。

摘　　要：为了研究微波点火对Ti/CuO点火燃烧性能的影响,采用静电喷雾法制备了氧燃比(Ф)为1~3的Ti/CuO复合微球,获得了Ti/CuO的敞开体系中的微波点火延迟时间和微管内燃速、密闭体系中恒容燃烧的增压速率随氧燃比的变化规律,通过燃烧图像RGB比色法计算得到其微波点火和热点火的火焰温度分布图。结果表明,Ti/CuO点火燃烧特性随Ф的增大先增大后减小,当Ф=2.5时,微波点火延迟时间最短(120ms),峰值压力最大(412.76±28.74kPa),微管内燃速最大为2.38m/s;并且Ti/CuO微波点火火焰温度(1500~2000℃)和火焰面积显著大于热点火火焰温度(1200~1600℃),这主要是因为微波强电磁场加热未反应凝聚相和电离燃烧气体产物并产生高温等离子体,提高了凝聚相热效应和火焰热辐射,增强了燃烧性能。In order to study the effect of microwave ignition on the ignition and combustion performance of Ti/CuO,Ti/CuO composite microspheres with oxygen-fuel ratio(Ф)of 1—3 were prepared by electrostatic spraying method.The effects of the oxygen-fuel ratio on the microwave ignition delay time in the open system,combustion velocity in the micropipes and the pressurization rate of constant volume combustion in the closed system were obtained for Ti/CuO.The flame temperature distribution diagrams of microwave ignition and thermal ignition were obtained by the calculation of combustion images with the RGB colorimetric method.The results show that Ti/CuO ignition combustion performance increases and then decreases with the increasing of oxygen-fuel ratio.WhenФ=2.5,the microwave ignition delay time is the shortest(120ms),the peak pressure is the largest(412.76±28.74kPa),and the combustion velocity in the microtubes is the maximum of 2.38m/s.In addition,the microwave ignition flame temperature(1500—2000℃)and flame area are significantly larger than those of the thermal ignition.The main reason is that the unreacted condensed phase and ionization of combustion gas products are heated by the microwave strong electromagnetic field,and then produces the high temperature plasma,which improves the condensed phase thermal effect and the flame thermal radiation and enhances combustion performance.

关 键 词：物理化学 微波点火 Ti/CuO复合含能材料 静电喷雾法 微波增强燃烧 铝热剂 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O643.2[理学—物理化学]