PYROTECHNIC MATERIALS

摘要

A pyrotechnic material consists of an oxidisable metal vapour-deposited onto a substrate film of an oxidising polymeric material the metal and polymeric substrate being conjointly capable of exothermic reaction on ignition. The substrate may be provided in flexible film tape form and coated on both sides with metal to provide a flash transfer medium with flash velocities typically within the range 10-100 ms<-1>. The substrate is preferably PTFE and the metal magnesium.