Pyrotechnic delay compositions

Details Pyrotechnic delay compositions Pyrotechnic delay compositions

1989-03-08

1990-10-16

Miller, Edward A.

Explosive and thermic compositions or charges

Metal or alloy or metalloid, each in particulate form, with...

Plural oxygen yielding compounds

C06B 3312

Patent

active

049632043

ABSTRACT:
Pyrotechnic delay compositions with delays in the seconds range are based on a pyrotechnic delay mixture of powdered metallic tungsten, barium chromate an potassium perchlorate, and additionally contain either barium hexafluorosilicate or calcium fluoride pyrogenic silica. The additives cause these compositions to burn completely even under severe environmental conditions, such as very fast rotation, vibration, impact, shock, and, at the same time, extremely low below-freezing temperatures. The effect of the barium hexafluorosilicate is still further improved if the delay compositions additionally contain pyrogenic silica.

REFERENCES:
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patent: 3172795 (1965-03-01), Heliwell et al.
patent: 3701697 (1972-10-01), Zimmer-Galler et al.
patent: 3726730 (1973-04-01), Rose
patent: 4239004 (1980-12-01), Day et al.
patent: 4356768 (1982-11-01), Cord et al.
patent: 4422383 (1983-12-01), Couture et al.
Hawley, "The Condensed Chemical Dictionary", 9th Ed., pp. 19, 773, 774, Van Nostrand Reinhold Co., (1977) New York.

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