Pyrotechnic materials

C - Chemistry – Metallurgy – 06 – B

Patent

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Details

C06B 45/14 (2006.01) C06C 5/00 (2006.01) C23C 14/20 (2006.01) F02K 9/14 (2006.01)

Patent

CA 2048642

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.

Une matière pyrotechnique se compose d'un métal oxydable déposé en phase vapeur sur un film faisant office de substrat en matière polymère oxydante, le métal et le substrat polymère étant capables conjointement d'une réaction exothermique lorsqu'on les allume. Le substrat peut se présenter sous la forme d'un ruban de film flexible et peut être revêtu de métal sur les deux côtés, afin de produire un milieu de transfert éclair à des vitesses éclair typiquement dans la plage comprise entre 10 et 100 ms-1. Le substrat est de préférence du PTFE (polytétrafluoroéthylène) et le métal du magnésium.

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