| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: spark-show composition is used in pyrotechnic articles - table fountains for entertainment. The composition contains the following in wt %: ammonium nitrate 82.62.0; activated carbon 6.61.0; titanium 4.31.0; cast iron 2.50.5; urotropin 4.11.0. The composition is used in form of pressed blocks (specific moulding pressure 750-780 kgf/cm2). Characteristics: height of spark show 520 mm, flameless, burning temperature 600-700C, show of hot bursting particles in form of a herringbone. Duration of burning of two blocks in cardboard cartridge case with height 40-45 mm, fitted with a nozzle with diameter 8 mm is about four minutes. ^ EFFECT: absence of falling hot particles when said composition burns, low burning temperature of said composition, absence of specific smell of combustion products and explosion hazardous components in the composition makes use and manufacture of the fountain safe, the spark show in form of a herringbone consisting of bursting particles creates a beautiful effect with duration of more than three minutes. ^ 1 tbl |
