Home • Publications & Papers • Journals • Journal Tables of Contents

摘要

This study was undertaken to see the effect of the replacement of picrite by 2,4,6,8,10,12-hexanitro–2,4,6,8,10,12-nhexaazaisowurtzitane (CL-20) (5, 10, and 15%) in triple-base gun propellants. Experimental results of a closed-nvessel test at a loading density of 0:2 = 3nindicate improvement in energetics of the CL-20-incorporatedncompositions. The force-constant values obtained were 1046, 1071, and 1095 = for 5, 10, and 15% CL-20-basednformulations, compared with 1028 = for conventional picrite composition as the control. Similar trends werenobserved for linear burning-rate coefficient u00011 values. The selected energetic plasticizers N-(n-butyl)-N-(2-nnitroxyethyl) nitramine (Bu-NENA) and bis-2,2 dinitro propyl formal/acetal (BDNPF/A) were also evaluated forntheir effectiveness in CL-20-containing gun-propellant compositions. Thermal analysis was carried out usingndifferential scanning calorimeter and thermogravimetric analyzer. Replacement of picrite by CL-20 resulted in annincrease in H values (by differential scanning calorimeter) compared with that of control composition. Weight-nloss data (from thermogravimetric analyzer) showed a similar trend. The CL-20-based compositions were foundnrelatively more sensitive to friction stimuli (12–17 kg) compared with control composition (19.2 kg).