Ignition Characteristics of Ti/Teflon Pyrolants: Safety Igniter with Partition

By using partitions in smoke generators, luminous flame agents or other pyrotechnic agents, the vapor and sublimated materials are confined in a chamber. Titanium (Ti), polytetrafluoroethylene (Teflon), and Viton pyrolants (TTV), which generate high temperature products, can be used in a partition type igniter. The ignition delay time, τig, decreased with the increase of the concentration of Ti, ξ(Ti), and also the physical ignition delay time, τp, decreased with the increase of ξ(Ti). On the other hand the chemical ignition delay time, τc, remained unchanged in the range of ξ(Ti) from 0.4 to 0.7. As τp of TTV pyrolants is larger than τc, the ignition delay time is dominated by physical processes.