Preparation and Properties of a Flake Aluminum Powder in an Ammonium-Perchlorate-Based Composite Modified Double-Base Propellant
D.-Q. Wang1, H.-M. Yu1, J. Liu1, F.-S. Li1, X. X. Jin2, S.-J. Zheng1, T. T. Zheng2, Y. Li3, Z.-J. Zhang2, D. Li3, Z.-G. Lan3
1Nanjing University of Science and Technology, Nanjing, 210094 China
2Shanghai Space Propulsion Technology Research Institute, Huzhou, 313000 China
3Shanxi North Xing'an Chemical Industry Co. Ltd, Taiyuan, 030000 China
Keywords: AP-based CMDB propellant, aluminum morphology, thermal stability, thermal decomposition, mechanical sensitivity, burning rate
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.
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