Characterization of Aluminum Powders: IV. Effect of Nanometals on the Combustion of Aluminized Ammonium Nitrate‐Based Solid Propellants,Propellants, Explosives, Pyrotechnics

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Characterization of Aluminum Powders: IV. Effect of Nanometals on the Combustion of Aluminized Ammonium Nitrate‐Based Solid Propellants
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2021-02-03 , DOI: 10.1002/prep.202000234
Alexander A. Gromov ₁ , Elena M. Popenko ₁ , Alexey V. Sergienko ₁ , Konstantin V. Slyusarsky ₁ , Anton Yu. Nalivaiko ₁ , Dmitriy Yu. Ozherelkov ₁ , Kirill B. Larionov ₁ , Ella L. Dzidziguri ₁

Affiliation

This study is devoted to the investigation of the energetic properties of two types of aluminized solid propellants with inert and active binders modified by additives of six different metal nanopowders. The substitution of an inert binder for the active one resulted in significant improvement of energetic properties. However, burning rate regulation become more complicated because the pressure exponent in burning rate law was increased as well. The DSC analysis revealed that the most significant catalytic effects were observed while using Zn, Cu, and Mo powders. Combustion of compositions based on an inert combustible binder and ammonium nitrate was studied in the pressure range 0.1–10.0 MPa. Due to the low combustion rate, no dispersion of burning aluminum particles was observed. During combustion, a single agglomerate of aluminum particles was formed, the mass of which was about 96 % of the initial aluminum mass in the formulation. A comparative analysis of nanosized metal additive effect on the propellant's combustion process was performed. It had been found that the activity of the metal nanopowders depends on the propellant formulation. It had been shown that Al and Zn did not affect the combustion rate of propellant with inert binder but they were effective in compositions with an active binder. Cu and Ni were found to be a good catalyst for the ammonium nitrate and active binder decomposition.

中文翻译：

铝粉的表征：IV。纳米金属对铝化硝酸铵基固体推进剂燃烧的影响

这项研究致力于研究两种类型的铝化固体推进剂的能量特性，这些推进剂具有通过六种不同的金属纳米粉的添加剂改性的惰性和活性粘合剂。用惰性粘合剂代替活性粘合剂导致能量性能的显着改善。但是，由于燃烧率定律中的压力指数也增加，因此燃烧率调节变得更加复杂。DSC分析表明，使用锌，铜和钼粉末时，观察到最明显的催化作用。在0.1-10.0 MPa的压力范围内，对基于惰性可燃粘合剂和硝酸铵的组合物的燃烧进行了研究。由于低燃烧速率，未观察到燃烧的铝颗粒的分散。在燃烧过程中形成铝颗粒的单个附聚物，其质量为制剂中初始铝质量的约96％。进行了纳米金属添加剂对推进剂燃烧过程影响的比较分析。已经发现金属纳米粉末的活性取决于推进剂配方。已经表明，Al和Zn不影响具有惰性粘合剂的推进剂的燃烧速率，但是它们在具有活性粘合剂的组合物中是有效的。发现铜和镍是硝酸铵和活性粘合剂分解的良好催化剂。已经发现金属纳米粉末的活性取决于推进剂配方。已经表明，Al和Zn不影响具有惰性粘合剂的推进剂的燃烧速率，但是它们在具有活性粘合剂的组合物中是有效的。发现铜和镍是硝酸铵和活性粘合剂分解的良好催化剂。已经发现金属纳米粉末的活性取决于推进剂配方。已经表明，Al和Zn不影响具有惰性粘合剂的推进剂的燃烧速率，但是它们在具有活性粘合剂的组合物中是有效的。发现铜和镍是硝酸铵和活性粘合剂分解的良好催化剂。

更新日期：2021-03-04

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