Zirconium (Zr) easily ignites in air atmosphere and generates high‐energy output. Therefore, it is used as a fuel for pyrolants. Barium chromate (BaCrO4) dose not ignite in air, so it is one of safety materials and it is used as oxidizer. These materials are mixed with viton as coating material/agent, since viton is easily dissolved in acetone. The static electric sensitivity of only‐BaCrO4‐coated material is lower than that of Zr‐coated one. The static electric energy, E, influences the chemical and the physical ignition delay times and they decrease with increasing E. The chemical ignition delay time decreases with increasing concentration of Zr. The chemical and physical ignition delay times of only‐BaCrO4‐coated pyrolant are longer than those of both‐coated material and only‐Zr‐coated, so the pyrolant of only‐BaCrO4‐coated pyrolant is the safer material.

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, t ig , decreased with the increase of the concentration of Ti, x(Ti), and also the physical ignition delay time, t p , decreased with the increase of x(Ti). On the other hand the chemical ignition delay time, t c , remained unchanged in the range of x(Ti) from 0.4 to 0.7. As t p of TTV pyrolants is larger than t c , the ignition delay time is dominated by physical processes.

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