| 摘要 |
FIELD: demolition works.SUBSTANCE: pyrotechnic composition of white smoke contains the following, wt %: potassium chlorate 40-43, ammonium chloride 35-37, pine rosin 15-17, natural chalk 2-3 and thiocarbamide 5-3 as a burning activator. Pine rosin is used in the form of spirit varnish, at the mass ratio of ethyl alcohol to pine rosin in the range 0.1-0.2.EFFECT: process safety of preparation of the composition due to decrease of potassium chloride share in it, stability of ignition of charges at increased burning rate for formation of optically dense veil improving the dispersion of light flux the screening of which forms visual effect of mist that is required for picture and video filming.2 cl, 1 tbl, 5 ex |
