The invention relates to a slow combustion composition for long duration
pyrotechnic delays. It comprises an oxidant of the perchlorate type
according to a percentage in mass of between 75 to 91%, a reductant
selected from among the aromatics according to a percentage in mass of
between 5 to 20%, 0 to 6% of a binder and 0 to 5% in mass of a nanometric
silica powder. Application to the manufacture of cords or fuses for delays
having a combustion rate of around 1 mm/s.
