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AssigneeSchweizerische Eidgenossenschaft, Vertreten durch die Eidg. Munitionsfabrik Thun der Gruppe fur Rustungsdienste
InventorPaul Arni
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A plastic bound high power explosive comprises 90 to 97 percent by weight of a powerful explosive compound, for example octogen, and 3 to 10 percent by weight of a novel stabilizing and binding agent. The agent comprises substantially 20 to 50 percent poly-O-butyl acrylate and 3.5 to 20 percent paraffin, as well as 2 to 7 percent poly tetrafluorethylene as a lubricant, 20 to 65 percent of a filler and 1 to 8 percent poly ethylene or, respectively, in the case of an antistatic high power explosive, 25 to 65 percent graphite as a lubricant and 15 to 25 percent calcium sulphate as a filler, each by weight of the portion of solids in the agent. Further additives like emulsifiers, dispersants, defoamers, surfactants, thickeners and small amounts of silica gel are added. The stabilizing and binding agent is prepared as an aqueous dispersion which is mixed with the dry explosive compound in a mixing drum, then dried or, respectively, predried and treated with an isopropanol-water mixture (1:1) prior to being finally dried. Homogeneous bodies cold-pressed therefrom using a die at pressures in the range of about 1.5 to 4.2 kbar/cm.sup.2 have densities above 1.8 g/cm.sup.3 and their detonation velocities exceed 8.6 km/s.
A process for preparing a high power explosive, said process comprising the steps of:
A process for preparing a high power explosive, said process comprising the steps of:
A process for preparing a high power explosive, said process comprising the steps of:
Process for preparing a high power explosive, said process comprising the steps of
Plastic bound high power explosive comprising at least 90 percent by weight of a powerful explosive compound selected from the group consisting of cyclotetramethylenetetranitramine and cyclotrimethylenetrinitramine and a maximum of 10 percent of a stabilizing and binding agent substantially composed of an acrylate or methacrylate polymer, of a lubricant, of a filler and of wax or paraffin.
Plastic bound high power explosive containing at least 90 percent by weight of a powerful explosive compound selected from the group consisting of cyclotetramethylenetetranitramine and cyclotrimethylenetrinitramine and a maximum of 10 percent by weight of a stabilizing and binding agent substantially comprising in the range of about 20 to about 50 percent by weight of a poly-O-alkyl acrylate having an alkyl group with at least 3 carbon atoms and in the range of about 5 to about 15 percent poly ethylene by weight of said poly-O-alkyl acrylate, the polyethylene having an average particle size in the range of about 0.1 to about 0.3 .mu.m;
Plastic bound high power explosive containing at least 90 percent by weight of a powerful explosive compound selected from the group consisting of cyclotetramethylenetetranitramine and cyclotrimethylenetrinitramine and a maximum of 10 percent by weight of a stabilizing and binding agent substantially comprising in the range of about 18 to about 40 percent by weight of a poly-O-alkyl acrylate having an alkyl group with at least 3 carbon atoms;
Method for shaping by compressing a high power explosive comprising at least 90 percent by weight of a powerful explosive compound selected from the group consisting of cyclotetramethylenetetranitramine and cyclotrimethylenetrinitramine and a maximum of 10 percent by weight of a stabilizing and binding agent, said stabilizing and binding agent substantially comprising an acrylate or methacrylate polymer, a lubricant selected from the group consisting of poly tetrafluoroethylene and graphite, an alkaline earth compound of low water solubility as a filler, wax or paraffin and microdispersed silica gel, in which method said high power explosive is filled into a mold and compressed using a die at pressures in excess of 1.5 kbar at ambient temperature.
Dependencies are inferred from the claim text.