SE501224C2 - Methods to prepare polymer-bound explosive bodies - Google Patents
Methods to prepare polymer-bound explosive bodiesInfo
- Publication number
- SE501224C2 SE501224C2 SE9001913A SE9001913A SE501224C2 SE 501224 C2 SE501224 C2 SE 501224C2 SE 9001913 A SE9001913 A SE 9001913A SE 9001913 A SE9001913 A SE 9001913A SE 501224 C2 SE501224 C2 SE 501224C2
- Authority
- SE
- Sweden
- Prior art keywords
- grinding
- explosive
- water
- crystalline
- bodies
- Prior art date
Links
Classifications
-
- 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
- C06B21/0033—Shaping the mixture
- C06B21/0066—Shaping the mixture by granulation, e.g. flaking
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Molecular Biology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
- Polyesters Or Polycarbonates (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
material. material.
Enligt uppfinningen framställs sålunda de önskade sprà kropparna genom att däri ingående kristallina sprängämnen före slutformningen mals till önskad partikelstorlek suspenderade i en flegmatiserings- eller malvätska som därefter åtminstone delvis ingår i det polymera bindemedlet. flegmatiseringsmedel. Dessutom uppnår man den fördelen att man genom val av lämplig polymerkomponent som flegmatiserings- och malvätska kan få bättre smörjeffekt under malsteget än man 501 224 Då vatten ingår som en komponent i flegmatiserings- eller mal- vätskan enligt uppfinningen kan den däri ingående polymerkompo- nenten t ex bestå av en vattenlöslig polymer t ex en dito poly- uretan eller av en i ett lösningsmedel löslig polymer där lös- ningen av detta i sin tur emulgerats i vatten eller tvärt om.According to the invention, the desired brittle bodies are thus prepared by grinding the crystalline explosives contained therein before the final molding to the desired particle size suspended in a phlegmatization or grinding liquid which is then at least partially included in the polymeric binder. phlegmatizer. In addition, the advantage is obtained that by choosing a suitable polymer component such as phlegmatizing and grinding liquid, a lubricating effect can be obtained during the grinding step than when water is included as a component in the phlegmatizing or grinding liquid according to the invention, the polymer component consist of a water-soluble polymer, for example a ditto polyurethane or of a polymer soluble in a solvent, the solution of which in turn has been emulsified in water or vice versa.
Ett representativt exempel skulle då vara polyvinylacetat upp- löst i etylacetat och emulgerat i vatten. Polyvinylacetat upplöst i etylacetat kan även användas direkt som malvätska förutsatt att koncentrationerna är lämpligt avpassade.A representative example would then be polyvinyl acetate dissolved in ethyl acetate and emulsified in water. Polyvinyl acetate dissolved in ethyl acetate can also be used directly as a grinding fluid provided that the concentrations are suitably adjusted.
Med eller utan vattentillsats kan flegmatiserings- och mal- vätskan enligt uppfinningen vidare alternativt bestå av en eller flera av flera i ett flerkomponents polymersystem ingåen- de komponenter alternativt det kompletta polymersystemet som kan var i förpolymeriserat eller polymeriserat tillstånd och i så fall åtminstone i det senare alternativet upplöst i ett avdrivbart lösningsmedel som avdrives i samband med slutform- ningen varvid även ytterligare polymerkomponent alternativt annan polymeriseringsinitiator såsom värme kan tillföras.With or without water addition, the phlegmatization and grinding liquid according to the invention may further alternatively consist of one or more of several components included in a multicomponent polymer system or alternatively the complete polymer system which may be in the prepolymerized or polymerized state and in that case at least in the latter the alternative is dissolved in a strippable solvent which is stripped off in connection with the final molding, whereby an additional polymer component or another polymerization initiator such as heat can also be added.
Vidare ingår i uppfinningen att de i flegmatiserings- eller malvätskan ingående polymerkomponenterna kan bestå av enstaka komponenter eller blandningar som ej är reaktiva med varandra eller med sprängämnet alternativt bestå av monomerer, förpoly- merisat eller polymerer av en- eller flerkomponenttyp som är reaktiva med varandra och/eller kemiskt kan anlagras till sprängämnet.Furthermore, the invention includes that the polymer components contained in the phlegmatization or grinding liquid may consist of single components or mixtures which are not reactive with each other or with the explosive or alternatively consist of monomers, prepolymer or polymers of one or more component type which are reactive with each other and / or can be chemically applied to the explosive.
Inom den grundläggande uppfinningstanken finns alltså plats för ett mycket stort antal varianter allt beroende av vilket poly- mersystem som väljs som bindemedel i den färdiga produkten.Within the basic inventive concept, there is thus room for a very large number of variants, all depending on which polymer system is chosen as binder in the finished product.
Själva malningen sker vid sättet enligt uppfinningen i en mal- apparat av i och för sig känd typ som företrädesvis utgörs av en med lämpligt utformade malkroppar fylld kulkvarn av det ena eller andra slaget och som alltså kan vara av vibrerande typ utan rörliga omrörare eller roterande eller av omrörartyp.The grinding itself takes place in the method according to the invention in a grinding apparatus of a per se known type which preferably consists of a ball mill filled with suitably shaped grinding bodies of one or the other kind and which can thus be of the vibrating type without movable stirrers or rotating or of stirrer type.
Mängden malvätska kan vid sättet enligt uppfinningen variera meuan so-so vikts s a v s zo-vo vik-cs s krisfaïlint malgods allt beroende av valt polymersystem och sprängämne samt önskad malgrad och malapparatens prestanda.In the method according to the invention, the amount of grinding liquid can vary according to the so-so weight of the so-so weight of the grinding material, depending on the selected polymer system and explosive, as well as the desired degree of grinding and the performance of the grinding apparatus.
Senafe .Senafe.
Ett mycket stort antal olika alternativ är alltså möjliga inom den bakomliggande uppfinningstanken.A very large number of different alternatives are thus possible within the underlying inventive concept.
Antalet tänkbara polymersystem och däri ingående komponenter och lösningsmedel som skulle kunna komma till användning i samband med sättet enligt uppfinningen är egentligen ännu större varför vi endast kan ange anger några tänkbara exempel.The number of possible polymer systems and components and solvents included therein which could be used in connection with the method according to the invention is actually even greater, which is why we can only state a few possible examples.
Malningen skulle sålunda kunna ske i en isocyanat, i en polyol, eller i en polyolblandning. 501 224 Bra bindemedel i detta sammanhang som även fungerar bra som flegmatiserings- och malvätskor är monomera eller förpolymeri- serade akrylat (di-, tri- eller tetraakrylat) eftersom akryla- terna i sin monomera form har låg viskositet och ett eventuellt överskott därför lätt kan avsugas varefter produkten kan härdas genom tillsats av peroxid och eventuellt värme. Andra hänsyn kan dock göra att andra typer av inom uppfinningstanken liggande polymera bindemedel kan komma ifråga.The grinding could thus take place in an isocyanate, in a polyol, or in a polyol mixture. 501 224 Good binders in this context which also work well as phlegmatization and grinding liquids are monomeric or prepolymerized acrylates (di-, tri- or tetraacrylate) because the acrylates in their monomeric form have a low viscosity and a possible excess can therefore easily sucked out, after which the product can be cured by adding peroxide and any heat. Other considerations may, however, mean that other types of polymeric binders within the scope of the invention may be considered.
Som exempel på de partikelstorlekar som kan komma ifråga i sam- band med sättet enligt uppfinningen kan nämnas slutprodukter med en i huvudsak jämn partikelstorlek om 2-5 Pm. Den jämna par- tikelstorleken är väsentlig eftersom man helst vill slippa att sikta torra eller halvtorra kristallina sprängämnen. En rundpumpning av grovpartikelfraktioner i maximal mängd malvätska i samband med uttaget av malgods från malapparaten är dock något helt annat.As examples of the particle sizes that can be considered in connection with the method according to the invention, mention may be made of end products with a substantially even particle size of 2-5 Pm. The even particle size is important because you prefer not to aim at dry or semi-dry crystalline explosives. However, a round pumping of coarse particle fractions in the maximum amount of grinding fluid in connection with the removal of grinding material from the grinding apparatus is something completely different.
Sättet enligt uppfinningen har definierats i de efterföljande patentkraven medan bifogade figur schematiskt visar en anordning som skulle kunna vara lämplig för genomförande av sättet enligt' uppfinningen. Några representativa exempel finns även diskute- rade efter figurbeskrivningen.The method according to the invention has been defined in the following claims, while the appended figure schematically shows a device which could be suitable for carrying out the method according to the invention. Some representative examples are also discussed according to the figure description.
Anordningen innefattar en blandningstank 1 i vilken det via inloppet 2 tillförda kristallina sprängämnet dispergeras i den via inloppet 3 tillförda polymera bindemedelskomponenten. Från tanken 1 pumpas dispersionen av pumpen 4 vidare mot en ventil 5.The device comprises a mixing tank 1 in which the crystalline explosive supplied via the inlet 2 is dispersed in the polymeric binder component supplied via the inlet 3. From the tank 1, the dispersion of the pump 4 is pumped further towards a valve 5.
Dessutom ingår i systemet en returledning 6 via vilken den dispersion som ventilen 5 ej kan ta emot returneras till tanken 1. Från ventilen 5 matas en avpassad mängd dispersion till kulkvarnen 7 som i det här fallet tänks vara av vibrerande typ och till en mycket stor del fylld med malkroppar av aluminiumsi- likat, var och en med formen av en cylinder med något kupiga ändgavlar. Från kvarnen 7 går det i polymerkomponenten dispergrade malgodset via ledningen 8 mot en separationsanord- ning 9 som returnerar all grovfraktion tillsammans med en del av 501 224 EXEMPEL Den använda apparaturen utgjordes även vibrerande kulkvarn med en produktsvolym om 9.8 liter och fylld med cylinderformade mal- kroppar av aluminiumoxid med rundade ändar. Två storlekar på malkroppar användes med dimensionerna š“ x §" och 1/4' x 1/4".In addition, the system includes a return line 6 via which the dispersion which the valve 5 cannot receive is returned to the tank 1. A suitable amount of dispersion is fed from the valve 5 to the ball mill 7, which in this case is intended to be of a vibrating type and to a very large extent filled with grinding bodies of aluminum silicate, each with the shape of a cylinder with slightly cupped end ends. From the mill 7, the milled material is dispersed in the polymer component via the line 8 towards a separation device 9 which returns all coarse fraction together with a part of 501 224 EXAMPLES The equipment used also consisted of a vibrating ball mill with a product volume of 9.8 liters and filled with cylindrical mills of alumina with rounded ends. Two sizes of grinding bodies were used with the dimensions š "x §" and 1/4 'x 1/4 ".
Malapparatens insida var polymerbelagd och vi har ej kunnat konstatera någon direkt skillnad mellan den malapparat som hade en inre teflonyta och den som var invändigt belagd med ett polyuretanskikt. Malapparatens elektriska drivmotor var på S hk, 50 Hz och hade ett varvtal om 1350 varv/minut.The inside of the grinder was polymer coated and we have not been able to establish any direct difference between the grinder which had an inner Teflon surface and the one which was internally coated with a polyurethane layer. The grinder's electric drive motor was at S hp, 50 Hz and had a speed of 1350 rpm.
Som flegmatiserings- och malvätska användes i nedanstående försök polyvinylacetat löst i etylacetat emulgerat i vatten i vilken sprängämneskristallerna suspenderades i en mängd mot- svarande en torrhalt om ca 60%. Efter malningens slut avdrevs etylacetaten och vattnet så att en torrhalt om ca 80 % erhölls varefter produkten granulerades och kompakterades till samman- hängande sprängämneskroppar.As the phlegmatization and milling liquid, polyvinyl acetate dissolved in ethyl acetate emulsified in water in which the explosive crystals were suspended in an amount corresponding to a dry content of about 60% was used in the following experiments. After grinding, the ethyl acetate and water were evaporated to give a dry matter content of about 80%, after which the product was granulated and compacted into cohesive explosive bodies.
FÖRSÖK 1 Malning av RDX (hexogen) utgångsmaterialets medelpartikelstorlek 1000 um. Malkroppen å" x å". Den genomförda maloperatíonen re- sulterade i en produkt med partiklar om 10-15 um.EXPERIMENT 1 Grinding of the average particle size of the RDX (hexogen) starting material 1000 μm. The grinding body å "x å". The maloperation carried out resulted in a product with particles of 10-15 μm.
FÖRSÖK 2 Malníng av HMX (oktogen). Utgångsmaterialets medelpartikelstor- lek 1000 um. Malkroppar 1/4" x 1/4". Den genomförda malningen resulterade i en produkt med snäv partikelfördelning med par- tiklar på ca 2 um.EXPERIMENT 2 Grinding of HMX (octogen). The average particle size of the starting material is 1000 μm. Grinding bodies 1/4 "x 1/4". The completed grinding resulted in a product with a narrow particle distribution with particles of about 2 μm.
Slutproduktens partikelstorlek verkar mest vara ett resultat av malkropparnas storlek även om man får räkna med en längre maltid för att uppnå den mindre partikelstorleken. Eftersom vi i de redovisade undersökte vilka partikelstorlekar vi kunderThe particle size of the final product seems to be mostly a result of the size of the grinding bodies, although a longer grinding time can be expected to achieve the smaller particle size. Because in the reports we investigated which particle sizes we customers
Claims (5)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9001913A SE501224C2 (en) | 1990-05-29 | 1990-05-29 | Methods to prepare polymer-bound explosive bodies |
DE69115995T DE69115995T2 (en) | 1990-05-29 | 1991-05-10 | Process for the production of polymer-bound explosive devices |
EP91850118A EP0459959B1 (en) | 1990-05-29 | 1991-05-10 | A method of producing polymerbonded explosive bodies |
AT91850118T ATE132476T1 (en) | 1990-05-29 | 1991-05-10 | METHOD FOR PRODUCING POLYMER-BONDED EXPLOSIVES |
NO912046A NO175144C (en) | 1990-05-29 | 1991-05-28 | Process for the preparation of polymer-bound explosive bodies |
CA002043398A CA2043398A1 (en) | 1990-05-29 | 1991-05-28 | Method of producing polymerbonded explosive bodies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9001913A SE501224C2 (en) | 1990-05-29 | 1990-05-29 | Methods to prepare polymer-bound explosive bodies |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9001913D0 SE9001913D0 (en) | 1990-05-29 |
SE9001913L SE9001913L (en) | 1991-11-30 |
SE501224C2 true SE501224C2 (en) | 1994-12-12 |
Family
ID=20379613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9001913A SE501224C2 (en) | 1990-05-29 | 1990-05-29 | Methods to prepare polymer-bound explosive bodies |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0459959B1 (en) |
AT (1) | ATE132476T1 (en) |
CA (1) | CA2043398A1 (en) |
DE (1) | DE69115995T2 (en) |
NO (1) | NO175144C (en) |
SE (1) | SE501224C2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA200205775B (en) * | 2002-04-12 | 2003-03-28 | Diehl Munitionssysteme Gmbh | Insensitive hexogen explosive. |
CN103936533B (en) * | 2014-04-21 | 2016-05-18 | 中国工程物理研究院化工材料研究所 | High viscosity PBX explosive pressure injection forming method and device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB776539A (en) * | 1946-01-30 | 1957-06-05 | Mini Of Supply | Preparation of explosive substances in thermoplastic or pourable form |
GB1082641A (en) * | 1963-03-14 | 1967-09-06 | Secr Defence | Explosive compositions |
US4070212A (en) * | 1964-11-23 | 1978-01-24 | Thiokol Corporation | High performance fast burning solid propellant |
EP0217770B1 (en) * | 1985-09-27 | 1992-01-22 | Nobel Kemi AB | A method of phlegmatization of crystalline explosives and other explosive crystalline substances, as well as a method of producing plastic bound explosives and substances produced according to the method |
-
1990
- 1990-05-29 SE SE9001913A patent/SE501224C2/en unknown
-
1991
- 1991-05-10 AT AT91850118T patent/ATE132476T1/en active
- 1991-05-10 EP EP91850118A patent/EP0459959B1/en not_active Expired - Lifetime
- 1991-05-10 DE DE69115995T patent/DE69115995T2/en not_active Expired - Fee Related
- 1991-05-28 NO NO912046A patent/NO175144C/en unknown
- 1991-05-28 CA CA002043398A patent/CA2043398A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
SE9001913L (en) | 1991-11-30 |
EP0459959A2 (en) | 1991-12-04 |
NO912046D0 (en) | 1991-05-28 |
DE69115995T2 (en) | 1996-05-30 |
EP0459959B1 (en) | 1996-01-03 |
SE9001913D0 (en) | 1990-05-29 |
NO175144C (en) | 1994-09-07 |
EP0459959A3 (en) | 1992-03-25 |
NO912046L (en) | 1991-12-02 |
DE69115995D1 (en) | 1996-02-15 |
CA2043398A1 (en) | 1991-11-30 |
NO175144B (en) | 1994-05-30 |
ATE132476T1 (en) | 1996-01-15 |
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