| 摘要 |
An infra-red emitting pyrotechnic material comprises a fibrous carbon containing substrate 1 onto one or both faces 4,5 of which is vapour deposited a combustible material layer 2,3 which may be protected by an additional coating 6,7. The thickness and composition of each of the layers 2,3 are selected such that in use each of the layers is capable of igniting substantially simultaneously the entire surface on which it is deposited. The substrate may be a carbonised rayon textile. The combustible layer may be Mg, Al, B, Be, Ca, Sr, Ba, Na, Li or Zr and may be coated with a less reactive metal layer 6, 7. An oxidant, such as a metal nitrate, chlorate, nitrite or perchlorate may also be present. |
