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The decomposition reaction kinetics of the double-base (DB) propellant (No. TG0701) composed of the mixed ester of triethyleneglycol dinitrate (TEGDN) and nitroglycerin (NG) and nitrocellulose (NC) with cerium(III) citrate (CIT-Ce) as a combustion catalyst was investigated by high-pressure differential scanning calorimetry (PDSC) under flowing nitrogen gas conditions. The results show that pressure (2 MPa) can decrease the peak temperature and increase the decomposition heat, and also can change the mechanism function of the exothermal decomposition reaction of the DB gun propellant under 0.1 MPa; CIT-Ce can decrease the apparent activation energy of the DB gun propellant by about 35 kJ mol−1 under low pressure, but it can not display the effect under high pressure; CIT-Ce can not change the decomposition reaction mechanism function under a pressure.

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. 2. Brown LD , Korte DW Jr . Primary dermal irritation potential of triethyleneglycol dinitrate (TEGDN) in rabbits . Pentagon reports A443602; 1989. 3

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]. These make the simultaneous analysis of these compounds challenging. Detata et al. [ 20 ], characterised over 50 organic explosives and propellants including NG, triethyleneglycol dinitrate (TEGDN), diethyleneglycol dinitrate (DEGDN), TNT, RDX, HMX, PETN

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