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In this research, a new formulation based on magnesium fuel, oxidants of barium peroxide and barium nitrate and Viton binder is presented for a tracer pyrotechnic. Differential scanning calorimetry curves showed the ignition temperatures 355, 420 and 610 °C, respectively, for samples of Mg:BaO2, Mg:BaO2:Ba(NO3)2 and Mg:Ba(NO3)2, also the sensitivity to friction of the prepared pyrotechnics is obtained 15.3, 22.8 and 34.7 N, respectively. So, the tracer pyrotechnic of Mg:BaO2:Ba(NO3)2 showed a good ignition temperature in addition to acceptable safety. The mass ratio of the ingredients in Mg:BaO2:Ba(NO3)2:Viton is optimized using the experimental design by response surface methodology (RSM) for improvement its luminosity. Mass ratios of BaO2/Mg, Ba(NO3)2/Mg and %mass of Viton used as predictor variables. Also, the response variables were luminous intensity and luminous time. The statistics parameter of P-value for each predictor variable is obtained < 0.05 which indicates the significant effect of predictor variables on luminosity of tracer pyrotechnic. Also, the P-value of lack-of-fit of both response variables is > 0.05 that showed the proposed statistical models fits well. The luminous intensity 16,287 ± 309 in terms of candelas unit and luminous time 0.445 ± 0.029 s are obtained in optimized parameters 0.977, 1.804 and 7.37, respectively, for mass ratios of BaO2/Mg, Ba(NO3)2/Mg and %mass of Viton binder. [ABSTRACT FROM AUTHOR]

Each pyrotechnic composition has specific sensitivity such as electrostatic discharge (ESD) sensitivity and friction sensitivity (FS), and it also has specific ignition performance, including luminous intensity (LI) and burning rate (BR). These parameters depend on the concentration of pyrotechnic composition ingredients. In this study, Mg/Ba(NO3)2/novolac resin compositions were prepared using different weight ratios (wt.%) of Mg, Ba(NO3)2, and novolac resin. Then, they were investigated by their FS, LI, and BR. The results showed that by increasing Ba(NO3)2 concentration from 33.76 to 84.54 wt.% Ba(NO3)2, the FS increases from 343 N to 65.5 N. However, the LI and BR of this composition increased by increasing Ba(NO3)2 concentration until a 3/1 stoichiometric ratio of Mg/Ba(NO3)2 (from 13086 to 20588 cd (candela) and 11.25 to 13.71 cm/s, respectively for 33.76 to 64.92 wt.% Ba(NO3)2) and decreased afterward (from 20488 to 53.24 cd and 13.71 to 6.45 cm/s, respectively). For Mg/Ba(NO3)2/novolac resin containing 3 to 12 wt.% novolac resin FS increased from 56 to above 360 N. LI and BR decreased from 20057 to 1203 cd and 17.3 to 1.2 cm/s, respectively. The stoichiometric ratio of Mg/Ba(NO3)2 has the highest enthalpy of reaction. Therefore, it can be concluded that it has the highest LI and BR. [ABSTRACT FROM AUTHOR]