Ammunition and explosives – Igniting devices and systems – Fuse cord
Patent
1979-03-27
1982-02-23
Nelson, Peter A.
Ammunition and explosives
Igniting devices and systems
Fuse cord
C06C 504
Patent
active
043164153
ABSTRACT:
The disclosed invention is an effective detonating cord which does not ignite combustible materials adjacent and exterior to the cord upon detonation. The cord in one of its broadest aspects comprises a core of high explosive coated with a composition extrudable around the core at safe temperatures and comprising a halogenated linear polymer with sufficient halogenation to prevent ignition of combustible materials adjacent and exterior to the cord upon detonation. The core preferably contains pentaerythritol tetranitrate and the preferred polymer is substantially amorphous chlorinated polyethylene (CPE) having about 25 to 50 weight percent chlorine. The coating composition frequently also includes synergistic agents known in the flame retardant arts such as antimony trioxide which enhance the flash-suppressing qualities of the coating, plasticizers such as polyethylene polymers and other materials such as extrusion aids. The coating composition can easily be extruded around the PETN core at safe temperatures to provide a thin but effective flash-suppressing coating for the cord. The resulting cord can effectively be detonated and is flexible so that the cords can be tied together to form a branched cord so as to initiate several high explosive charges at once.
REFERENCES:
patent: 2216835 (1940-10-01), Carothers
patent: 3507719 (1970-04-01), Hodgson
patent: 3544360 (1970-12-01), Gardner
patent: 3740278 (1973-06-01), Sakreis et al.
patent: 4102428 (1978-07-01), Kelly et al.
patent: 4177732 (1979-12-01), Steele
patent: 4178853 (1979-12-01), Garrison et al.
Condensed Chemical Dictionary, Van Nostrand Reinhold Co., Eighth Edition, p. 71.
Apache Powder Company
Nelson Peter A.
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