Selection of burning rate modifiers for hydrazinium nitroformate

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• 作者：Mark J. Tummers^a ; ^{M.J.Tummers@tudelft.nl} ; Antoine E.D.M. van der Heijden^b ; Eric H. van Veen^a
• 关键词：40.01 ; 70.08 ; 80.04
• 刊名：Combustion and Flame
• 出版年：2012
• 出版时间：February 2012
• 年：2012
• 卷：159
• 期：2
• 页码：882-886
• 全文大小：265 K

文摘

Species including N₂H₄, NH₃ and N₂O are known to be present near the surface of burning hydrazinium nitroformate (HNF). In this paper, planar laser induced fluorescence from the near surface region of burning HNF pellets is reported indicating the presence of NO₂. These four species are formed in the upper (foamy) layer of the solid phase. A burning rate modifier might be selected to induce reactions between the gaseous species in this layer. Selective catalytic reduction (SCR) is able to start highly exothermic reactions at relatively low temperatures. The SCR catalyst V₂O₅ increases the burning rate of HNF by a factor of 11 at 0.1 MPa. The pressure exponent is reduced to 0.28, far below the target value of 0.5 required for practical application of HNF in propellant formulations. As far as SCR catalysts have been tested as burning rate modifiers of HNF, they are effective, yet incompatible. To overcome this incompatibility remedies might possibly be found in high-temperature catalysts, or in coating particles.