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BuNENA-DNDA57 combined energetic plasticizer for modified cast double base propellants
Authors: Maraden Ahmed Mohamed Ali | Stojan Petr | Zigmund Jan | Matyáš Robert
Year: 2018
Type of publication: článek v odborném periodiku
Name of source: Central European Journal of Energetic Materials
Page from-to: 485-500
Titles:
Language Name Abstract Keywords
cze Energetické plastifikátory BuNENA-DNDA57 v nasakovaných TPH K získání kvalitních nasakovaných TPH je nutné najít vhodný kompromis mezi energií TPH (danou obsahem energetických komponent) a dalšími vlastnosti TPH. Tato práce je zaměřena na charakterizaci TPH, v nichž je nitroglycerin nahrazen energetickými aditivy hexogenem a plastifikátory BuNENA a DNDA57. Sledován byl pak vliv těchto aditiv na následující vlastnosti: na rychlost hoření TPH v závislosti na okolním tlaku (měřeno v uzavřené bombě SV-2), na termické a stabilitní parametry (měřeno metodami DTA a DSC) a na citlivost TPH k nárazu. Nejvyšší rychlost hoření, nevyšší aktivační energii a zároveň nejnižší citlivost mají směsi jen s obsahem energetických plastifikátorů. Nasakované TPH; rychlost hoření; termická analýza; BuNENA; DNDA57
eng BuNENA-DNDA57 combined energetic plasticizer for modified cast double base propellants Modification of cast double base propellants is somewhat of an art form. Obtaining a final propellant grain that has the right balance between energetic liquids and solid ingredients with the desired properties requires great effort. Four formulations of a modified cast double base propellant with different RDX contents have been prepared. A combination of BuNENA and DNDA57 energetic plasticizers has been used to overcome the problems that occur with a high nitroglycerin content. The effect of the RDX content on the burning behaviour, activation energies, and sensitivity to impact has been studied. Burning rate measurements have been performed using a closed bomb SV-2 to investigate the burning behaviour under a wide range of operating pressures. DTA and DSC thermal analysis were conducted to evaluate the thermal behaviour of the prepared modified double base propellants. The results showed that the formulation with only the combined plasticizer has the highest burning rate and activation energy and the lowest sensitivity to impact. Modified cast double base propellant; burning rate; thermal analysis; BuNENA; DNDA57

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