DE3739191A1 - POWABLE EXPLOSIVE WITH A PLASTIC Binder FOR WEAPON SYSTEMS - Google Patents

Description

The invention relates to a pourable explosive with a Plastic binders for weapon systems.

Modern weapon systems place high and constantly increasing demands to the explosives used.

On the one hand, high performances such as high detonations are required speed when used against hard, i.e. armored targets and secondly low sensitivity, i.e. low likely violent reactions when exposed to external in effects such as fire or fire.

High-performance explosives with a high proportion of secondary explosives, so compressible recipes with <95% explosives or pourable Explosives based on TNT / octogen meet the requirements security mostly no longer.

Pourable explosives with plastic binders are not very sensitive, but clearly show because of the proportion of <10% inert binder reduced performance values on use in high performance severely restrict loads.  

On the other hand, it is through the German patent application DE 35 45 983 A1 known for a castable, insensitive high-performance explosive a curable binder, such as silicone rubber with a proportion from 10 to 40%. The disadvantage of this is that the safe against shock wave and fire, but there is detonation speed of approx. 7400 m / s for the intended applications too small.

There has been no shortage of attempts in the past, binder systems to develop that delivering energy in the detonation front implement and thus increase performance, but still the ge wanted safety, mechanical properties and Meet manageability. Such binder systems are considered active Binder called. For example, attempts have been made to nitro or Incorporate azido groups in the plastic molecules. Another way is based on the use of active plasticizers such as fluorornitro alcohols and compounds derived therefrom, which the plastic binder can be added.

For various reasons, these attempts were unsuccessful peaceful results. Inadequate examples are to be mentioned mechanical properties, expensive or toxic chemicals or unbe peaceful chemical stability of the active binder.

It has long been known that fluorine-containing compounds are mixed with secondary explosives lower the performance less than fluorine-free substances. Obviously there is an energy supply Implementation of the fluorine-containing compound in the detonation front.

For this reason, fluorine-containing plastics have long been used for used the manufacture of explosives.  

Since these plastics are solid and chemically inert and either as a powder or in the form of a solution in a suitable solution so far, they could only be used for pressing bare explosives are used, see European patent message 01 25 166.

The object of the invention is therefore a pourable explosive to propose with such a plastic binder that leads to a Explosives with a performance that is significantly higher than the high-performance known from the aforementioned DE-OS 35 45 983 explosive. On the other hand, sensitivity should be essential be lower than with comparable explosives, comparatively higher Power.

The solution to this problem is in the characteristic features of Claim 1 removable.

Advantageous further developments are specified in the subclaims.

The advantage here is that a pourable explosive is present is inexpensively processable on machines used to manufacture pourable, plastic-bound explosives are common. Also points the explosive has good mechanical properties at low temperatures on. Extreme shock stresses during fire are uncritical Area dismantled.

According to claim 7 is known by explosives Aluminum component a larger, effective plateau in the target reached.

The highly fluorinated plastics lie as fluorinated polydiol and as a fluorinated polydiisocyanate. These can be too high Crosslink fluorinated polyurethanes.

Example of use: At room temperature, 85 wt% octogen 5% by weight of fluorinated polydiol and 10% by weight of fluorinated poly given diisocyanate and mixed intimately.

At the same time, 0.2% by weight of a trihydric alcohol, 0.1 % By weight of iron acetone acetate and 0.1% by weight of lecithin were added. The Mass is thoroughly mixed under vacuum, filled into suitable forms and cured at approx. 60 ° C.

Claims (7)

1. Pourable explosive characterized by a plastic binder for weapon systems

• a) 55-90 wt .-% of a particulate high-performance explosive, such as hexogen or octogen.
• b) 10 to 45 wt .-% of a curable solid form, flowable binder high fluorine content.

2. Composition according to claim 1, characterized, that component b) from one or more liquid prepolymers high fluorine content and by any method is cured to a solid polymer. 3. Composition according to claim 1, characterized, that component b) from polyhydroxy derivatives and polyisocyanate Derivatives of highly fluorinated compounds consisting of reacted to each other. 4. Composition according to claim 1, characterized, that component b) from polyhydroxy derivatives of highly fluorinated Connections exist and with any polyisocyanate is reacted.   5. Composition according to claim 1, characterized, that component b) from polyisocyanato derivatives of high fluorinated compounds consisting of a polyfunctional Alcohol is reacted. 6. The composition according to claim 1, characterized, that component b) from functionalized aliphatic Perfluoropolyäthern exists. 7. The composition of claim 1, characterized, that the explosive composition 10 to 30 wt .-% aluminum contains powder with a particle size of less than 0.5 mm.