| || Study on Magnesium based Pyrotechnic Composition as a Priming Charge
Author : Singh, S.N. ;Majumdar, V.A.;Redkar, A.S.
Source : Defence Science Journal ; Vol:46(1) ; 1996 ; pp 41-47
Subject : 665 Resins;66 Chemical Technology
Keywords : Magnisium pottasium nitrate systems ;Ignition temperature;Phenolic resin
Abstract : A new pyrotechnic composition containing Mg/KNO3/phenolic resin has been formulated and studied in detail for its sensitivity, mechanical and thermal properties, moisture and environmental effects and performance in a closed vessel. The data generated reveal that this composition shows superior performance, better mechanical properties and less susceptibility to moisture as compared to gunpowder. In addition, performance of the composition under extreme hot (45 degree centigrade) and cold (-26 degree centigrade) environmental conditions is not affected at all. Differential thermal analyser results indicate that phenolic resin plays a vital role in reducing the ignition temperature of Mg/KNO/sub 3/ system.
| || High Impetus Cool Burning Gun Propellants
Author : Damse, R.S. ;Redkar, A.S.
Source : Defence Science Journal ; Vol:50(3) ; 2000 ; pp 281-288
Subject : 66 Chemical Technology;662.3 Propellants
Keywords : High energy gun propellants;Energetic oxidiser;Glycidyl azide polymer;Energetic plasticiser;Ballistic parameters
Abstract : "This study explores the possibility of reducing the flame temperature (T/sub f/) without decrease in impetus of RDX-NC matrix-based high energy gun propellants by partial replacement of RDX with triaminoguanidine nitrate (TAGN). Compositions containing TAGN as an energetic oxidiser with varying percentage of RDX have been formulated. Glycidyl azide polymer was incorporated as an energetic plasticiser to achieve the higher level of impetus. Performance in terms of ballistic parameters (theoretical/experimental) sensitivity, thermal characteristics, stability and mechanical properties was evaluated and compared with the basic composition containing RDX as a single oxidiser. Experimental data indicates that the partial replacement of RDX by TAGN in gun propellant compositions decreases T(sub f) significantly with only marginal decrease in impetus. "