Results 171 to 180 of about 873 (194)

Thermal decomposition kinetics of ammonium dinitramide–guanylurea dinitramide mixture analyzed by isoconversional methods

Thermochimica Acta, 2008
Abstract The thermal decomposition kinetics of a mixture of high-energy oxidizers ammonium dinitramide (ADN) and guanylurea dinitramide (GUDN) have been studied by nonisothermal differential scanning calorimetry (DSC). Friedman's and Vyazovkin's advanced isoconversional (AIC-V) methods were used to investigate the dependence of activation energy ( E
G. Santhosh, Robbin Poh Cheng Tien, Ang How Ghee   +2 more
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Thermal analysis of ammonium dinitramide (ADN)

Thermochimica Acta, 2000
Abstract Kinetic constants of decomposition were determined for ADN and prilled ADN by DSC and TG. Pressure DSC at 550 psi air or helium had similar kinetic constants for prilled ADN, namely 29 kcal/mol activation energy and a log frequency factor of ∼14.0 min−1.
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MODELING THE PHOTOLYSIS OF AMMONIUM DINITRAMIDE IN NATURAL WATERS

Environmental Toxicology and Chemistry, 2000
Abstract Photolytic rate constants for the novel energetic compoundammonium dinitramide(ADNweredetermined in order to understand the fate of ADN in natural bodies of water. Quantum yields were measured between 290 and 400 nm using a lamp system, and these values were combined with absorption of light in a water column to model photolysis
Michelle K Beretvas, John P Hassett, Susan E Burns, Trisha M Basford   +3 more
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Ammonium Dinitramide (ADN)–Prilling, Coating, and Characterization

Propellants, Explosives, Pyrotechnics, 2009
AbstractAmmonium dinitramide (ADN) is the promising oxidizer, which is expected to be applied, e.g., in solid rocket propellants. The manufacturing of spherical ADN particles (the so‐called ADN‐Prills) with useful morphology and reproducible quality is realized by means of the emulsion crystallization process.
Thomas Heintz, Heike Pontius, Jasmin Aniol, Christoph Birke, Karlfred Leisinger, Werner Reinhard   +5 more
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Heat-release mechanism in ammonium dinitramide flame

Combustion, Explosion, and Shock Waves, 2007
To verify the adequacy of various models of heat release in ammonium dinitramide flame to real processes, chemical processes in products of thermal decomposition at a pressure of 10 torr and in ammonium dinitramide [ADN; NH4N(NO2)2] flame at a pressure of 0.4 to 60 atm are numerically simulated. The calculations are performed on the basis of a detailed
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Thermal decomposition of ammonium dinitramide and mechanism of anomalous decay of dinitramide salts

Russian Chemical Bulletin, 1999
Thermal decomposition of ammonium dinitramide proceedsvia homolytic rupture of the N−NO2 bond and partially by the proton transfer reaction. The monomolecular decay of the anion to N2O and NO3 − in the solid state at 60 °C occurs with higher rates than those in the melt.
A. N. Pavlov, V. N. Grebennikov, L. D. Nazina, G. M. Nazin, G. B. Manelis   +4 more
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Stabilization of ammonium dinitramide in the liquid phase

Russian Chemical Bulletin, 2000
The kinetics of accumulation of the main products of thermal decomposition of ammonium dinitramide in the melt was investigated. The isotope composition of nitrogen-containing gases evolved by the decomposition of 15NH4N(NO2)2 and NH4 15N(NO2)2 was found.
A. B. Andreev, O. V. Anikin, A. P. Ivanov, V. K. Krylov, Z. P. Pak   +4 more
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Combustion of Ammonium Dinitramide, Part I: Burning Behavior

Journal of Propulsion and Power, 2006
The paper presents a detailed analysis of the ammonium dinitramide (ADN) combustion behavior depending on organic and inorganic additives, material of the surrounding shell, and the sample cross-section size. In spite of the fact that ADN is an oxidizer, combustible surroundings have been found to exert practically no effect on the burning rate of ADN ...
Valery P. Sinditskii, Viacheslav Y. Egorshev, Anton I. Levshenkov, Valery V. Serushkin   +3 more
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Characteristics of NEPE Propellant with Ammonium Dinitramide (ADN)

Advanced Materials Research, 2011
The theoretical performances of NEPE (nitrate ester plasticized polyether) propellant with and without ADN were calculated with minimum free energy method. The burning characteristics and the thermal decomposition of propellants were determined by nickel chromium wire method and TG- DTG, respectively.
Wei Qiang Pang, Hui Xiang Xu, Yang Li, Xiao Bing Shi   +3 more
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CO2 Laser-Induced Combustion of Ammonium Dinitramide (ADN)

Combustion and Flame, 1998
Abstract Experimental studies of CO 2 laser-induced combustion of ammonium dinitramide (ADN) were performed to determine the key physical and chemical processes involved. Experimental conditions covered the range of 0.1–5.0 atmospheres in argon and incident laser heat fluxes of 20 to 300 W/cm 2 . Quantitative gaseous species measurements obtained by
B.L Fetherolf, T.A Litzinger
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