Abstract

A flake aluminum powder (f-Al) is prepared by a bi-directional rotation mill method using a spherical aluminum powder (s-Al) as a raw material. Then, these two kinds of aluminum powders are used to prepare ammonium perchlorate-based composite modified double-base (AP-based CMDB) propellants. The properties of two kinds of AP-based CMDB propellants, such as the thermal decomposition performance, mechanical sensitivity, and combustion performance, are comprehensively researched. The results show that the exothermic peak temperature of the f-Al/AP-based CMDB propellant is lower than that of the s-Al/AP-based CMDB propellant. The impact and friction sensitivities of the propellant decrease by 12% and 187% after using f-Al to replace s-Al. In addition, the burning rate of the f-Al/AP-based CMDB propellant is 5.5% higher.

中文翻译：

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高氯酸铵基复合改性双基推进剂中片状铝粉的制备与性能

摘要

使用球形铝粉（s-Al）作为原料，通过双向旋转研磨法制备薄片状铝粉（f-Al）。然后，将这两种铝粉用于制备高氯酸铵基复合改性双基（AP基CMDB）推进剂。全面研究了两种基于AP的CMDB推进剂的性能，如热分解性能，机械灵敏度和燃烧性能。结果表明，基于f-Al / AP的CMDB推进剂的放热峰值温度低于基于s-Al / AP的CMDB推进剂的放热峰值温度。用f-Al代替s-Al后，推进剂的冲击敏感性和摩擦敏感性分别降低了12％和187％。此外，基于f-Al / AP的CMDB推进剂的燃烧速率高5.5％。