Ti/Fe(NCN)新型铝热剂的制备和燃烧性能  

Preparation and Combustion Performance of a Ti/Fe(NCN)Thermite

作　　者：万立祥 朱理想 李宵鹏 郎茂运 蔡昌武 尹艳君 WAN Lixiang;ZHU Lixiang;LI Xiaopeng;LANG Maoyun;CAI Changwu;YIN Yanjun(School of Chemistry and Materials Engineering,Chaohu University,Hefei 238024,Anhui,China)

机构地区：[1]巢湖学院化学与材料工程学院,安徽合肥238024

出　　处：《兵工学报》2024年第12期4500-4507,共8页Acta Armamentarii

基　　金：国家自然科学基金项目(21905032);安徽省优秀青年科研项目(2022AH030150);安徽省大学生创新创业训练计划项目(202310380018);巢湖学院校级科研项目(XLY-202209)。

摘　　要：铝热剂作为一类高能、钝感、安全性好的含能材料,在固体推进剂、金属焊接、新型材料制造等领域有着广阔的应用前景。近年来,一类金属碳化二亚胺或称金属氰胺化合物M x(NCN)y(其中M为碱金属、碱土金属、过渡金属或非金属元素),由于其独特的电子结构和新奇的物化性质,逐渐成为研究热点。借助金属碳化二亚胺化合物的高含氮量和亚稳态特性,以Fe(NCN)为代表,与纳米Ti组装为一种新型铝热剂体系—Ti/Fe(NCN),并对Ti/Fe(NCN)含能材料的组分、结构、形貌、燃烧特性及反应过程进行了探究。研究结果表明:当Ti与Fe(NCN)质量比为5∶1时,燃烧过程剧烈,放热量为605 J/g,释放压力319 kPa,且反应产物中检测出Fe、TiC 0.2 N 0.8及气体产物N 2;Ti/Fe(NCN)新型铝热剂有望丰富含能材料研究体系,同时为新型含能器件的研发提供新思路。As a type of high-energy,insensitive and safe energetic material,the thermites have been applied in solid propellants,metal welding,new material manufacturing and other fields.In recent years,a type of metal carbodiimide M x(NCN)y(where M is an alkali metal,alkali earth metal,transition metal or non-metallic element)has gradually become a research hotspot due to its unique electronic structure and novel physicochemical properties.This study utilizes the high nitrogen content and metastable properties of metal carbodiimides,represented by Fe(NCN),to assemble a new type of thermite system with nano Ti-Ti/Fe(NCN).And the composition,structure,morphology,combustion characteristics and reaction process of Ti/Fe(NCN)are explorated.The results show that the combustion process of Ti/Fe(NCN)is outstanding with a heat release of 605 J/g and a pressure release of 319 kPa,and Fe,TiC 0.2 N 0.8 and gas product N 2 are detected in the reaction products when the mass ratio of Ti-Fe(NCN)is 5∶1.The study of new thermite Ti/Fe(NCN)would enrich the research system of energetic materials and provide new ideas for the development of new energetic devices.

关 键 词：铝热剂 Ti/Fe(NCN)含能材料 燃烧特性 放热性能 反应过程 

分 类 号：TQ560.5[化学工程—炸药化工]