EP0254820A2 - Process for producing a plastic-bound explosive - Google Patents
Process for producing a plastic-bound explosive Download PDFInfo
- Publication number
- EP0254820A2 EP0254820A2 EP87106359A EP87106359A EP0254820A2 EP 0254820 A2 EP0254820 A2 EP 0254820A2 EP 87106359 A EP87106359 A EP 87106359A EP 87106359 A EP87106359 A EP 87106359A EP 0254820 A2 EP0254820 A2 EP 0254820A2
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- EP
- European Patent Office
- Prior art keywords
- plastic
- explosive
- solvent
- powder
- specific surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
- C06B45/04—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
- C06B45/06—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component
- C06B45/10—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component the organic component containing a resin
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0008—Compounding the ingredient
- C06B21/0025—Compounding the ingredient the ingredient being a polymer bonded explosive or thermic component
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/009—Wetting agents, hydrophobing agents, dehydrating agents, antistatic additives, viscosity improvers, antiagglomerating agents, grinding agents and other additives for working up
Definitions
- the invention relates to a method for producing a plastic-bound explosive, in particular in granular form, in which the explosive, the plastic and a solvent for the plastic are mixed, whereupon the solvent is removed and the remaining mass is optionally granulated.
- Such a method is already known. It is referred to as the "slurry process".
- the explosive is placed in an aqueous suspension and the plastic dissolved in an organic solvent is added. The whole is mixed, the solvent and water are removed and the remaining mass is granulated.
- antitatic agents and lubricants such as carbon black or graphite can be added during or after the mixing.
- the granules must be pressed into explosive charges at the softening temperature of the plastic, i.e. at a relatively high temperature.
- wax as a binder instead of plastic.
- a wax-explosive mixture is mixed in a kneader above the melting point of the wax from about 60 to 100 ° C. Although this can cause the volume of the mixture to multiply, e.g. B. the 20-fold compared to the slurry process and a commercially available kneader, such as a planetary mixer, are used, but due to the low melting point of the wax, the operating temperature of the explosive charges made from it is limited.
- the object of the invention is to provide a method with which the production of plastic-bound explosives is simplified, in particular with regard to the outlay on equipment.
- a prefabricated powder made from a mixture of plastic and a material with a high specific surface is used as the plastic.
- a powder has no inherent stickiness and can be mixed with the explosive after adding a small amount of a solvent for the plastic without any problems, i. H. a commercially available kneader or other compulsory mixer can be used.
- thermoplastic is preferably used as the plastic, in particular a rubber, such as styrene-butadiene rubber.
- the material with a high specific surface area is a material with a specific surface area of at least 5, preferably at least 20 m 2 / g.
- the particles of the plastic powder in which this material is dispersed preferably have a particle size of less than 1000 .mu.m, preferably less than 500 .mu.m. B. between 50 and 500 I.Lm.
- the material with a high specific surface area leads to a quick release of the plastic and a homogeneous distribution of the same on the explosive.
- Carbon black is preferably used as the material with a high specific surface area, since carbon black has an antistatic effect. The use of further antistatic agents can then often be dispensed with. In addition, carbon black acts as a pressing aid, so that despite a relatively high softening temperature of the plastic of e.g. B. 130 to 200 ° C the explosive at a relatively low temperature, d. H. a temperature below 80 ° C and possibly even at room temperature.
- the material with a high specific surface area also acts as a hardening agent in the pressed load. I.e. it largely prevents re-springing, i.e. expansion of the load due to pressure reduction after pressing and irreversible swelling after exposure to temperature or under the influence of moisture.
- the material with a high specific surface can also be another type of graphite or z.
- the proportion of the material with a high specific surface area in the prefabricated plastic powder is generally more than 10% by weight. Often, however, more, e.g. B. 40 wt .-% or more of this material is required to obtain a non-sticky, free-flowing powder good storage stability.
- the proportion of plastic powder should not be too large. Accordingly, the amount of the prefabricated plastic powder, based on the weight of the explosive, is generally 2 to 15% by weight and generally 3 to 8% by weight.
- the carbon black rubber powder supplied by Chemische Werke Hüls AG can be used.
- Kneading takes place at a temperature which is expediently below the boiling point of the solvent. I.e. kneading can also be carried out at room temperature.
- nitramines such as octogen or hexogen
- nitro compounds such as trinitrobenzene
- nitrate esters such as pentaerythritol tetranitrate
- the plastic-bound explosive can contain oxygen carriers, such as chlorates or perchlorates, and metal powders, such as aluminum powder.
- the solvent required for mixing has the task of dissolving the plastic powder. So it is a non-solvent for the explosive and a good solvent for the plastic to keep the amount of solvent as low as possible.
- toluene is particularly suitable as a solvent.
- the solvent is removed after mixing, e.g. B. by evaporation, preferably in vacuum.
- the amount of solvent used should be at most 50% by weight, preferably at most 30% by weight, based on the weight of the explosive.
- a free-flowing granulate usually remains in the process according to the invention, ie. H. there is no need for a separate granulation process, which further simplifies production. However, if a compact mass is obtained, it can be granulated in the usual way.
- the process according to the invention can be carried out batchwise or continuously.
- a commercially available kneader e.g. B. a planetary mixer or another compulsory mixer can be used.
- the explosive, the prefabricated plastic powder and the solvent can be added to the kneader in any order.
- An extruder can be used for continuous production, e.g. B. an extruder with two intermeshing screws.
- the explosive is preferably mixed with the solvent required to dissolve the plastic in a preceding operation.
- the explosive which has been desensitized with the solvent, the plastic powder and, if necessary, further solvent can be supplied with suitable metering devices. By dosing the starting materials. desired composition of the explosive granules guaranteed.
- the solvent can be removed by evacuation units integrated in the process or by drying in a subsequent process.
- the continuous process benefits from the high dosing accuracy of the prefabricated plastic powder and the fast. Loosen the plastic powder.
- the explosive granules produced according to the invention are outstandingly suitable for producing explosive charges since they are at a temperature of less than 80 ° C .; is preferably less than 40 ° C compressible.
- the pressure during pressing amounts to 500 to 3,500, vorzu g s-wise from 1200 to 2500 bar.
- the charge produced in this way can also be used at high temperatures, ie the thermal application range of the charges is determined by the softening temperature of the plastic, which can be 160 ° C. and more.
- the granules are pressed into charges at room temperature with a pressure of 2000 bar.
- the charges have a density that is more than 97% of the theoretical maximum density.
- the surface resistance of the charges is approx. 10 6 ohms, which is far below the critical limit for antistatic charging.
- the loads or moldings are alternately tempered to + 150 ° C and - 40 ° C. After completing 5 cycles and tempering the body to room temperature, its dimensions have changed by less than 0.1%. The bodies are also free of cracks.
Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines kunststoffgebundenen Explosivstoffs, insbesondere in granulierter Form, bei dem der Explosivstoff, der Kunststoff und ein Lösungsmittel für den Kunststoff vermischt werden, worauf das Lösungsmittel entfernt und die zurückbleibende Masse gegebenenfalls granuliert wird.The invention relates to a method for producing a plastic-bound explosive, in particular in granular form, in which the explosive, the plastic and a solvent for the plastic are mixed, whereupon the solvent is removed and the remaining mass is optionally granulated.
Ein derartiges Verfahren ist bereits bekannt. Es wird als "Slurry-Verfahren" bezeichnet. Dabei wird der Explosivstoff in wässriger Suspension vorgelegt und der in einem organischen Lösungsmittel gelöste Kunststoff zugegeben. Das Ganze wird vermischt, worauf das Lösungsmittel und das Wasser entfernt werden und die zurückbleibende Masse granuliert wird. Um die elektrostatische Aufladung des Granulats zu verhindern und die Verpreßbarkeit zu erleichtern, können während oder nach dem Mischen Anitstatika und Gleitmittel, wie Ruß oder Graphit, zugegeben werden.Such a method is already known. It is referred to as the "slurry process". The explosive is placed in an aqueous suspension and the plastic dissolved in an organic solvent is added. The whole is mixed, the solvent and water are removed and the remaining mass is granulated. In order to prevent the electrostatic charging of the granules and to facilitate the compressibility, antitatic agents and lubricants such as carbon black or graphite can be added during or after the mixing.
Bei dem "Slurry-Verfahren" sind große Spezialgeräte erforderlich, da die Explosivstoffsuspension und die Kunststofflösung große Volumina einnehmen. Auch ist der Zeitaufwand, um den Kunststoff zu lösen und das Lösungsmittel und das Wasser zu entfernen, beträchtlich.Large special devices are required for the "slurry process" because the explosive suspension and the plastic solution take up large volumes. Also, the time it takes to dissolve the plastic and remove the solvent and water is considerable.
Das Pressen des Granulats zu Explosivstoffladungen hat bei der Erweichungstemperatur des Kunststoffs, also bei relativ hoher Temperatur, zu erfolgen.The granules must be pressed into explosive charges at the softening temperature of the plastic, i.e. at a relatively high temperature.
Ferner ist es bekannt, anstelle von Kunststoff Wachs als Bindemittel einzusetzen. Dabei wird ein Wachs-Explosivstoff-Gemisch oberhalb des Schmelzpunkts des Wachses von etwa 60 bis 100°C in einem Kneter gemischt. Zwar kann dadurch das Volumen des Gemischs auf ein Vielfaches, z. B. das 20-fache gegenüber dem Slurry-Verfahren reduziert und ein handelsüberlicher Kneter, wie ein Planetenmischer, eingesetzt werden, jedoch ist aufgrund des niedrigen Schmelzpunktes des Wachses die Einsatztemperatur der daraus hergestellten Explosivstoffladungen begrenzt.It is also known to use wax as a binder instead of plastic. A wax-explosive mixture is mixed in a kneader above the melting point of the wax from about 60 to 100 ° C. Although this can cause the volume of the mixture to multiply, e.g. B. the 20-fold compared to the slurry process and a commercially available kneader, such as a planetary mixer, are used, but due to the low melting point of the wax, the operating temperature of the explosive charges made from it is limited.
Um die Verarbeitung von Kautschuk zu vereinfachen, ist es bekannt, den Kautschuk in Pulverform überzuführen. Dem Problem der Eigenklebrigkeit und dem sogenannten "cold flow" des Kautschuks wird dabei dadurch begegnet, daß in dem Kautschuk ein Füllstoff dispergiert wird ("Füllstoffhaltiges Kautschukpulver BUNA EM", Hüls-Hauszeitschrift "Der Lichtbogen" Juni 1984 der Fa. Chemische Werke Hüls AG). Als Füllstoff wird dabei Ruß oder Kieselsäure verwendet.In order to simplify the processing of rubber, it is known to convert the rubber into powder form. The problem of inherent tackiness and the so-called "cold flow" of the rubber is countered by dispersing a filler in the rubber ("filler-containing rubber powder BUNA EM", Hüls in-house magazine "Der Lichtbogen" June 1984 from Chemische Werke Hüls AG ). Carbon black or silica is used as filler.
Aufgabe der Erfindung ist es, ein Verfahren bereitzustellen, mit dem die Herstellung kunststoffgebundener Explosivstoffe insbesondere hinsichtlich des apparativen Aufwandes vereinfacht wird.The object of the invention is to provide a method with which the production of plastic-bound explosives is simplified, in particular with regard to the outlay on equipment.
Dies wird erfindungsgemäß dadurch erreicht, daß als Kunststoff ein vorgefertigtes Pulver aus einem Gemisch aus Kunststoff und einem Material hoher spezifischer Oberfläche verwendet wird. Ein derartiges Pulver besitzt keine Eigenklebrigkeit und kann mit dem Explosivstoff nach Zugabe einer geringen Menge eines Lösungsmittels für den Kunststoff problemlos vermischt werden, d. h. es kann ein handelsüblicher Kneter oder ein sonstiger Zwangsmischer verwendet werden.This is achieved according to the invention in that a prefabricated powder made from a mixture of plastic and a material with a high specific surface is used as the plastic. Such a powder has no inherent stickiness and can be mixed with the explosive after adding a small amount of a solvent for the plastic without any problems, i. H. a commercially available kneader or other compulsory mixer can be used.
Als Kunststoff wird vorzugsweise ein thermoplastischer Kunststoff verwendet, insbesondere ein Kautschuk, wie Styrol-Butadien-Kautschuk.A thermoplastic is preferably used as the plastic, in particular a rubber, such as styrene-butadiene rubber.
Das Material hoher spezifischer Oberfläche ist ein Material mit einer spezifischen Oberfläche von mindestens 5, vorzugsweise mindestens 20 m2/g. Die Teilchen des Kunststoffpulvers, in die dieses Material dispergiert ist, besitzen vorzugsweise eine Teilchengröße von weniger als 1000 u.m, vorzugsweise weniger als 500 u.m. Besonders bevorzugt ist eine eng begrenzte Teilchengrößenverteilung z. B. zwischen 50 und 500 I.Lm.The material with a high specific surface area is a material with a specific surface area of at least 5, preferably at least 20 m 2 / g. The particles of the plastic powder in which this material is dispersed preferably have a particle size of less than 1000 .mu.m, preferably less than 500 .mu.m. B. between 50 and 500 I.Lm.
Das Material hoher spezifischer Oberfläche führt zu einem schnellen Lösen des Kunststoffs und einer homogenen Verteilung desselben auf dem Explosivstoff.The material with a high specific surface area leads to a quick release of the plastic and a homogeneous distribution of the same on the explosive.
Als Material hoher spezifischer Oberfläche wird vorzugsweise Ruß verwendet, da Ruß eine antistatische Wirkung besitzt. Auf den Einsatz weiterer Antistatika kann dann häufig verzichtet werden. Außerdem wirkt Ruß als Preßhilfsmittel, so daß trotz einer relativ hohen Erweichungstemperatur des Kunststoffs von z. B. 130 bis 200°C der Explosivstoff bei einer relativ niedrigen Temperatur, d. h. einer Temperatur unterhalb 80°C und gegebenenfalls sogar bei Raumtemperatur verpreßt werden kann.Carbon black is preferably used as the material with a high specific surface area, since carbon black has an antistatic effect. The use of further antistatic agents can then often be dispensed with. In addition, carbon black acts as a pressing aid, so that despite a relatively high softening temperature of the plastic of e.g. B. 130 to 200 ° C the explosive at a relatively low temperature, d. H. a temperature below 80 ° C and possibly even at room temperature.
Das Material hoher spezifischer Oberfläche wirkt zugleich als Verfestigungsmittel in der gepreßten Ladung. D. h. es verhindert weitgehend ein Nachfedern, also eine Ausdehnung der Ladung durch Druckabbau nach dem Pressen sowie eine irreversible Quellung nach Temperaturbelastung oder bei Einfluß von Feuchtigkeit.The material with a high specific surface area also acts as a hardening agent in the pressed load. I.e. it largely prevents re-springing, i.e. expansion of the load due to pressure reduction after pressing and irreversible swelling after exposure to temperature or under the influence of moisture.
Neben Ruß kann das Material hoher spezifischer Oberfläche bei dem erfindungsgemäßen Verfahren auch eine andere Art von Graphit oder z. B. Kieselsäure und dergleichen sein.In addition to carbon black, the material with a high specific surface can also be another type of graphite or z. B. silica and the like.
Der Anteil des Material hoher spezifischer Oberfläche in dem vorgefertigten Kunststoffpulver beträgt in der Regel mehr als 10 Gew.-%. Häufig sind jedoch auch mehr, z. B. 40 Gew.-% oder mehr dieses Materials erforderlich, um ein nichtklebriges, rieselfähiges Pulver guter Lagerbeständigkeit zu erhalten.The proportion of the material with a high specific surface area in the prefabricated plastic powder is generally more than 10% by weight. Often, however, more, e.g. B. 40 wt .-% or more of this material is required to obtain a non-sticky, free-flowing powder good storage stability.
Um die Leistung der Explosivstoffladung möglichst wenig zu beeinträchtigen, soll der Anteil des Kunststoffpulvers nicht zu groß sein. Demgemäß beträgt die Menge des vorgefertigten Kunststoffpulvers, bezogen auf das Gewicht des Explosivstoffs in der Regel 2 bis 15 Gew% und im allgemeinen 3 bis 8 Gew.-%. Als vorgefertigtes Kunststoffpulver kann z. B. das von der Fa. Chemische Werke Hüls AG gelieferte Ruß-Kautschukpulver verwendet werden.In order to impair the performance of the explosive charge as little as possible, the proportion of plastic powder should not be too large. Accordingly, the amount of the prefabricated plastic powder, based on the weight of the explosive, is generally 2 to 15% by weight and generally 3 to 8% by weight. As a prefabricated plastic powder z. B. the carbon black rubber powder supplied by Chemische Werke Hüls AG can be used.
Das Kneten erfolgt bei einer Temperatur, die zweckmäßigerweise unter der Siedetemperatur des Lösungsmittels liegt. D. h. das Kneten kann auch bei Raumtemperatur erfolgen.Kneading takes place at a temperature which is expediently below the boiling point of the solvent. I.e. kneading can also be carried out at room temperature.
Als Explosivstoffe können bei dem erfindungsgemäßen Verfahren sämtliche gängigen Explosivstoffe verwendet werden, also z. B. Nitramine, wie Oktogen oder Hexogen, Nitroverbindungen, wie Trinitrobenzol, oder Nitratester, wie Pentaerythrittetranitrat. Weiterhin kann der kunststoffgebundene Explosivstoff Sauerstoffträger, wie Chlorate oder Perchlorate sowie Metallpulver, wie Aluminiumpulver, enthalten.All common explosives can be used as explosives in the method according to the invention, that is, for. B. nitramines, such as octogen or hexogen, nitro compounds, such as trinitrobenzene, or nitrate esters, such as pentaerythritol tetranitrate. Furthermore, the plastic-bound explosive can contain oxygen carriers, such as chlorates or perchlorates, and metal powders, such as aluminum powder.
Das zum Vermischen erforderliche Lösungsmittel hat die Aufgabe das Kunststoffpulver anzulösen. Es ist also ein Nichtlösungsmittel für den Explosivstoff und ein gutes Lösungsmittel für den Kunststoff, um die Lösungsmittelmenge so gering wie mögich zu halten. Bei Kautschuk als Kunststoff ist Toluol als Lösungsmittel besonders geeignet.The solvent required for mixing has the task of dissolving the plastic powder. So it is a non-solvent for the explosive and a good solvent for the plastic to keep the amount of solvent as low as possible. In the case of rubber as a plastic, toluene is particularly suitable as a solvent.
Das Lösungsmittel wird nach dem Mischen entfernt, z. B. durch Verdampfen, vorzugsweise in Vakuum. Um das Volumen beim Mischen nicht zu groß werden zu lassen, soll die Menge des eingesetzten Lösungsmittels höchstens 50 Gew.-%, vorzugsweise höchstens 30 Gew: %, bezogen auf das Gewicht des Explosivstoffs bestragen.The solvent is removed after mixing, e.g. B. by evaporation, preferably in vacuum. In order not to let the volume become too large during mixing, the amount of solvent used should be at most 50% by weight, preferably at most 30% by weight, based on the weight of the explosive.
Nach dem Entfernen des Lösungsmittel bleibt bei dem erfindungsgemäßen Verfahren meist ein rieselfähiges Granulat zurück, d. h. es kann von einem gesonderten Granuliervorgang abgesehen werden, wodurch die Herstellung weiter vereinfacht wird. Falls jedoch eine kompakte Masse anfällt, kann dieselbe in üblicher Art und Weise granuliert werden.After the solvent has been removed, a free-flowing granulate usually remains in the process according to the invention, ie. H. there is no need for a separate granulation process, which further simplifies production. However, if a compact mass is obtained, it can be granulated in the usual way.
Das erfindungsgemäße Verfahren kann diskontinuierlich oder kontinuierlich durchgeführt werden.The process according to the invention can be carried out batchwise or continuously.
Beim diskontinuierlichen Verfahren kann ein handelsüblicher Kneter, z. B. ein Planetenmischer oder ein anderer Zwangsmischer verwendet werden. Der Explosivstoff, das vorgefertigte Kunststoffpulver und das Lösungsmittel können dabei in beliebiger Reihenfolge in den Kneter gegeben werden.In the batch process, a commercially available kneader, e.g. B. a planetary mixer or another compulsory mixer can be used. The explosive, the prefabricated plastic powder and the solvent can be added to the kneader in any order.
Zur kontinuierlichen Herstellung kann ein Extruder eingesetzt werden, z. B. ein Extruder mit zwei ineinander kämmenden Schnecken.An extruder can be used for continuous production, e.g. B. an extruder with two intermeshing screws.
Vorzugsweise wird der Explosivstoff mit dem zum Lösen des Kunststoffs erforderlichen Lösungsmittel in einem vorgeschalteten Arbeitsgang versetzt. Der mit dem Lösungsmittel phlegmatisierte Explosivstoff, das Kunststoffpulver sowie bei Bedarf weiteres Lösungsmittel können mit geeigneten Dosiervorrichtungen zugeführt werden. Durch Dosieren der Ausgangsstoffe wird die . gewünschte Zusammensetzung des Explosivstoffgranulates gewährleistet. Das Lösungsmittel kann durch in den Verfahrensgang integrierte Evakuiereinheiten bzw. durch Trocknen in einem nachgeschalteten Arbeitsgang entfernt werden.The explosive is preferably mixed with the solvent required to dissolve the plastic in a preceding operation. The explosive, which has been desensitized with the solvent, the plastic powder and, if necessary, further solvent can be supplied with suitable metering devices. By dosing the starting materials. desired composition of the explosive granules guaranteed. The solvent can be removed by evacuation units integrated in the process or by drying in a subsequent process.
Zugute kommt dem kontinuierlichen Verfahren also die hohe Dosiergenauigkeit des vorgefertigten Kunststoffpulvers sowie das schnelle. Lösen des Kunststoffpulvers.The continuous process benefits from the high dosing accuracy of the prefabricated plastic powder and the fast. Loosen the plastic powder.
Das erfindungsgemäß hergestellte Explosivstoffgranulat ist zur Herstellung von Explosivstoffladungen hervorragend geeignet, da es bei einer Temperatur von weniger als 80°C; vorzugsweise weniger als 40°C verpreßbar ist. Der Druck beim Pressen beträgt dabei 500 bis 3500, vorzugs-weise 1.200 bis 2.500 bar.The explosive granules produced according to the invention are outstandingly suitable for producing explosive charges since they are at a temperature of less than 80 ° C .; is preferably less than 40 ° C compressible. The pressure during pressing amounts to 500 to 3,500, vorzu g s-wise from 1200 to 2500 bar.
Dennoch ist die so hergestellte Ladung auch bei hohen Temperaturen einsetzbar, d. h. der thermische Einsatzbereich der Ladungen wird von der Erweichungstemperatur des Kunststoffs bestimmt, welche bei 1600C und mehr liegen kann.Nevertheless, the charge produced in this way can also be used at high temperatures, ie the thermal application range of the charges is determined by the softening temperature of the plastic, which can be 160 ° C. and more.
In einen Planetenmischer werden 95 Gewichtsteile Oktogen, 5 Gewichtsteile handelsübliches Ruß-Kautschuk-Pulver der Fa. Chemische Werke Hüls AG und 30 Gewichtsteile Toluol gegeben und bei iOO °C homogen vermischt. Nach Entfernen des Toluols durch Abdampfen im Vakuum erhält man ein rieselfähiges Granulat.95 parts by weight of octogen, 5 parts by weight of commercially available carbon black rubber powder from Chemische Werke Hüls AG and 30 parts by weight of toluene are placed in a planetary mixer and homogeneously mixed at 100 ° C. After the toluene has been removed by evaporation in vacuo, free-flowing granules are obtained.
Das Granulat wird bei Raumtemperatur mit einem Druck von 2000 bar zu Ladungen gepreßt. Die Ladungen weisen eine Dichte auf, die mehr als 97 % der theoretisch maximalen Dichte beträgt. Der Oberflächenwiderstand der Ladungen liegt bei ca. 106 Ohm, also weit unterhalb der kritischen Grenze für die antistatische Aufladung.The granules are pressed into charges at room temperature with a pressure of 2000 bar. The charges have a density that is more than 97% of the theoretical maximum density. The surface resistance of the charges is approx. 10 6 ohms, which is far below the critical limit for antistatic charging.
Die Ladungen oder Formkörper werden wechselweise auf + 150°C und - 40°C temperiert. Nach Beendigung von 5 Zyklen und Temperieren der Körper auf Raumtemperatur sind deren Abmessungen um weniger als 0,1 % verändert. Auch sind die Körper frei von Rissen.The loads or moldings are alternately tempered to + 150 ° C and - 40 ° C. After completing 5 cycles and tempering the body to room temperature, its dimensions have changed by less than 0.1%. The bodies are also free of cracks.
Claims (13)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3625412 | 1986-07-26 | ||
| DE19863625412 DE3625412A1 (en) | 1986-07-26 | 1986-07-26 | METHOD FOR PRODUCING A PLASTIC-TIED EXPLOSIVE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0254820A2 true EP0254820A2 (en) | 1988-02-03 |
| EP0254820A3 EP0254820A3 (en) | 1989-03-22 |
Family
ID=6306097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87106359A Withdrawn EP0254820A3 (en) | 1986-07-26 | 1987-04-30 | Process for producing a plastic-bound explosive |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0254820A3 (en) |
| DE (1) | DE3625412A1 (en) |
| NO (1) | NO167083C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0406190A2 (en) * | 1989-06-21 | 1991-01-02 | Bofors Explosives AB | Method for producing explosive substances |
| EP1352885A3 (en) * | 2002-04-12 | 2004-02-04 | Diehl Munitionssysteme GmbH & Co. KG | Insensitive compressed explosive mixture |
| WO2012028288A3 (en) * | 2010-09-03 | 2012-06-07 | Rheinmetall Waffe Munition Gmbh | Plastic-bonded explosive formulation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4111752C1 (en) * | 1991-04-11 | 1992-09-17 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3041216A (en) * | 1959-06-22 | 1962-06-26 | Charles C Bice | Propellant mixing process |
| DE1239968B (en) * | 1963-03-14 | 1967-05-03 | Delet | Self-supporting explosive mass with viscous-elastic binding agent, as well as process for their production |
| DE1446875A1 (en) * | 1965-12-24 | 1968-11-21 | Dynamit Nobel Ag | Process to increase the electrical surface conductivity and pourability of crystalline explosives |
| EP0034849A2 (en) * | 1980-02-21 | 1981-09-02 | "s.a. PRB", Société anonyme | Propellant for "base-bleed" type gas generators and process for preparing it |
| EP0105153A2 (en) * | 1982-09-22 | 1984-04-11 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Cast explosive charge |
| EP0157911A1 (en) * | 1984-04-03 | 1985-10-16 | Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. | Process for producing resin-bonded propellants and explosives |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1195122A (en) * | 1981-05-25 | 1985-10-15 | Paul Arni | Process for preparing a high power explosive, high power explosive produced thereby and method for shaping a high power |
-
1986
- 1986-07-26 DE DE19863625412 patent/DE3625412A1/en active Granted
-
1987
- 1987-04-30 EP EP87106359A patent/EP0254820A3/en not_active Withdrawn
- 1987-07-23 NO NO873096A patent/NO167083C/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3041216A (en) * | 1959-06-22 | 1962-06-26 | Charles C Bice | Propellant mixing process |
| DE1239968B (en) * | 1963-03-14 | 1967-05-03 | Delet | Self-supporting explosive mass with viscous-elastic binding agent, as well as process for their production |
| DE1446875A1 (en) * | 1965-12-24 | 1968-11-21 | Dynamit Nobel Ag | Process to increase the electrical surface conductivity and pourability of crystalline explosives |
| EP0034849A2 (en) * | 1980-02-21 | 1981-09-02 | "s.a. PRB", Société anonyme | Propellant for "base-bleed" type gas generators and process for preparing it |
| EP0105153A2 (en) * | 1982-09-22 | 1984-04-11 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Cast explosive charge |
| EP0157911A1 (en) * | 1984-04-03 | 1985-10-16 | Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. | Process for producing resin-bonded propellants and explosives |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0406190A2 (en) * | 1989-06-21 | 1991-01-02 | Bofors Explosives AB | Method for producing explosive substances |
| EP0406190A3 (en) * | 1989-06-21 | 1992-03-25 | Nobel Kemi Ab | Method for producing explosive substances |
| EP1352885A3 (en) * | 2002-04-12 | 2004-02-04 | Diehl Munitionssysteme GmbH & Co. KG | Insensitive compressed explosive mixture |
| WO2012028288A3 (en) * | 2010-09-03 | 2012-06-07 | Rheinmetall Waffe Munition Gmbh | Plastic-bonded explosive formulation |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0254820A3 (en) | 1989-03-22 |
| NO167083C (en) | 1991-10-02 |
| DE3625412C2 (en) | 1988-04-28 |
| NO167083B (en) | 1991-06-24 |
| DE3625412A1 (en) | 1988-02-04 |
| NO873096D0 (en) | 1987-07-23 |
| NO873096L (en) | 1988-01-27 |
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