The particle size and distribution of particle size of Mg/Al were analyzed by Mastersizer. The thermal characterisitics of CDMB propellant were analyzed by TG-DSC. The flame structure was studied by using the burning device and the differences of the flame structure were compared amongst CMDB, Al-CMDB, Mg-CMDB and Mg/Al-CMDB propellants. The surface appearance of the propellant quenched and surface composition were researched by the SEM and EDS. The results show that the Mg/Al alloy has a peak 630.3℃ of the heat of CMDB propellant. The combustion condition of CMDB propellant with Mg/Al is changed. Meanwhile,the metallic Al fuel combustion efficiency is improved.
在总结烟火药发光剂发光机理的基础上,综述了红光发光剂、绿光发光剂、白光发光剂、黄光发光剂、蓝光发光剂等发光剂的配方、发光性能等方面的相关研究进展.认为利用数学理论计算程序与发光剂配方研究相结合,将使烟火药发光剂研究取得长足发展.
通过不同的熔融温度和保温时间相互组合的方式,对聚碳酸酯材料打印样条进行二次熔融后处理,对处理后的样条进行拉力测试、粗糙度测试、差示扫描量热法分析、扫描电子显示测试分析,结果显示,当熔融温度260 ℃、保温时间25 min时,样条拉伸强度比后处理前提高了16.67％,粗糙度由14.11 μm减小至8.59 μm,降低了39.12％,断面微观形貌平整无间隙,内部结构均匀且稳定.
根据煤油加注系统静电产生机理,对引起静电的原因包括煤油电导率、加注流速、过滤器设置、人体静电等影响因素进行分析,提出采用限制流速、在过滤器后设置缓和管段、设备和管道接地、人员穿防静电鞋服等预防控制措施,以达到系统安全、可靠运行的目的.
采用单向拉伸宏观观察试验,研究了某低燃速丁羟(HTPB)推进剂/衬层界面脱黏的影响因素.结果表明:推进剂配方组分是推进剂界面脱黏的主要影响因素,通过选择合适的HTPB规格、降速剂和固化剂,可显著改善推进剂/衬层黏结试件的界面黏结性能;衬层的预固化时间大于9h后,试件的界面黏结性能达到最优.
