Mg/PTFE/Viton富燃烟火剂凝聚相燃烧产物的实验和数值分析  

Experimental and Numerical Analysis of Condensed-Phase Combustion Products of Mg/PTFE/Viton Fuel-Rich Pyrolants

作　　者：章康康 韩玉阁[1,2] 任登凤[1,2] 朱晨光[3] Zhang Kangkang;Han Yuge;Ren Dengfeng;Zhu Chenguang(School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;MIIT Key Laboratory of Thermal Control of Electronic Equipment,Nanjing University of Science and Technology,Nanjing 210094,China;School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学能源与动力工程学院,南京210094 [2]南京理工大学电子设备热控制工信部重点实验室,南京210094 [3]南京理工大学化工学院,南京210094

出　　处：《燃烧科学与技术》2021年第5期521-528,共8页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51676100).

摘　　要：为研究镁/聚四氟乙烯/氟橡胶(MTV)富燃烟火剂的凝聚相燃烧产物,利用扫描电子显微镜和X射线能谱仪对收集的产物进行了定性定量分析,同时使用高速摄影仪记录燃烧过程.为获得凝聚相产物的组分分布特性,建立了三维稳态燃烧流动模型.研究结果表明:Mg的凝聚相燃烧产物包括MgF2和MgO,MgF_(2)为主要燃烧产物且分布在燃面附近的无氧燃烧核心区,并大多聚集成粒径为3~5μm的球形团聚体,MgO位于外围的有氧燃烧扩散区,且大多呈现白色絮状结构.To study the condensed-phase combustion products of magnesium polytetrafluoroethylene fluororubber(MTV)fuel-rich pyrolants,the collected products were qualitatively and quantitatively analyzed using scanning electron microscope and X-ray energy spectrometer.At the same time,a high-speed camera was used to record the combustion process.To obtain the component distribution characteristics of the condensed-phase products,a threedimensional steady-state combustion and flow model was established.The research results show that the condensed-phase combustion products of Mg included MgF2 and MgO.MgF_(2) was the major combustion product,which was distributed in the anaerobic combustion core zone near the burning surface and mostly aggregated into spherical agglomerates with a particle size of 3—5μm.MgO was located in the peripheral aerobic combustion dif-fusion zone,and mostly presented a white flocculent structure.

关 键 词：MTV烟火剂 凝聚相产物 组分分布 数值模拟 

分 类 号：TK16[动力工程及工程热物理—热能工程]