Study of Modified Barium Nitrate as a Safe Pyrotechnic Oxidant
To meet the urgent demand of civil firework industry for safe oxidants, the safe and cheap oxidant barium nitrate was selected as the raw material to prepare the modified barium nitrate with higher reactivity by two modification methods. One method is expanding modification through co-crystallization by adding inorganic vesicant, the other method is activating treatment by adding thermally decomposition catalysts. The physical and chemical properties of expanded barium nitrate were characterized by SEM, SRD and DTA, as well as the safety performance and set off performance of barium nitrate fireworks. Results show that the density of modified barium nitrate decrease by 12.8%, the morphology of it is a fluffy porous structure with poor regularity and the thermal decomposition temperature decrease by 11.8℃. The impact sensitivity of modified barium nitrate fireworks is 4%, the friction sensitivity is 0%, and it is safer than potassium chlorate and potassium perchlorate fireworks. The modified barium nitrate fireworks can meet the set off requirement with sudden explosive sound ratio of 97% and paper scrap ratio of 95%.
CHEN Xin LI Yan PAN Gongpei Lü Huiping
School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China
国际会议
2011 International Autumn Seminar on Propellants,Explosives and Pyrotechnics(2011国际推进剂、炸药、烟火技术秋季研讨会)
南京
英文
141-144
2011-09-20（万方平台首次上网日期，不代表论文的发表时间）