Effect of amide-based compounds on the combustion characteristics of composite solid rocket propellants

被引:70
|
作者
Trache, Djalal [1 ]
Maggi, Filippo [2 ]
Palmucci, Ilaria [2 ]
DeLuca, Luigi T. [2 ]
Khimeche, Kamel [1 ]
Fassina, Marco [2 ]
Dossi, Stefano [2 ]
Colombo, Giovanni [2 ]
机构
[1] Ecole Mil Polytech, UER Chim Appl, BP 17, Algiers, Algeria
[2] Politecn Milan, Dept Aerosp Sci & Technol, SPLab, 34 Via La Masa, I-20158 Milan, Italy
关键词
Composite propellant; Ammonium perchlorate; Burning rate suppressant; Combustion characteristics; THERMAL-DECOMPOSITION; BURNING CHARACTERISTICS; ALUMINUM AGGLOMERATION; ENERGETIC MATERIALS; BALLISTIC MODIFIER; MECHANISM; MODEL; POLYETHYLENE; THERMOLYSIS; PRODUCTS;
D O I
10.1016/j.arabjc.2015.11.016
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Oxamide (OXA) and azodicarbonamide (ADA) are among the known burning rate suppressants used in composite solid rocket propellants. Much research has been carried out to understand mechanism of suppression but literature about the action of OXA andADAon the combustion characteristics of propellant is still scarce. Here, a systematic study on coolant-based propellants has been undertaken spanning from thermal analyses of ingredients to a variety of burning processes of the corresponding propellants. Thermal gravimetric analysis and differential thermal analysis on individual coolants are carried out to study their behaviour with temperature. It was noticed that the thermal decomposition of OXA exhibits only endothermic effects, whereas that of ADA presents both endothermic and exothermic effects. Successive experiments on solid propellant looking at burning rate characterization, condensed combustion product collection and visualization, pressure deflagration limit and thermochemical analysis gave a greater insight and enabled better understanding of the action of coolants during combustion. It is proposed that OXA and ADA are acting on both the condensed and gas phases. Also, the nature of coolant is a key parameter, which affects the burning rate pressure index. Increase of agglomerate size and of pressure deflagration limit was obtained in the coolant-based propellants, confirming the trend given in the literature. (C) 2015 The Authors. Published by Elsevier B.V. on behalf of King Saud University.
引用
收藏
页码:3639 / 3651
页数:13
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