PL80202B1 - - Google Patents

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Publication number
PL80202B1
PL80202B1 PL1969135672A PL13567269A PL80202B1 PL 80202 B1 PL80202 B1 PL 80202B1 PL 1969135672 A PL1969135672 A PL 1969135672A PL 13567269 A PL13567269 A PL 13567269A PL 80202 B1 PL80202 B1 PL 80202B1
Authority
PL
Poland
Prior art keywords
breakers
protective film
devices
coating
explosives
Prior art date
Application number
PL1969135672A
Other languages
Polish (pl)
Original Assignee
Dynamit Nobel Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel Ag filed Critical Dynamit Nobel Ag
Publication of PL80202B1 publication Critical patent/PL80202B1/pl

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Classifications

    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/18Compositions or products which are defined by structure or arrangement of component of product comprising a coated component
    • C06B45/20Compositions or products which are defined by structure or arrangement of component of product comprising a coated component the component base containing an organic explosive or an organic thermic component
    • C06B45/22Compositions or products which are defined by structure or arrangement of component of product comprising a coated component the component base containing an organic explosive or an organic thermic component the coating containing an organic compound
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0083Treatment of solid structures, e.g. for coating or impregnating with a modifier
    • CCHEMISTRY; METALLURGY
    • C06EXPLOSIVES; MATCHES
    • C06BEXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00Compositions or products which are defined by structure or arrangement of component of product
    • C06B45/18Compositions or products which are defined by structure or arrangement of component of product comprising a coated component
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02Cartridges, i.e. cases with charge and missile
    • F42B5/18Caseless ammunition; Cartridges having combustible cases
    • F42B5/192Cartridge cases characterised by the material of the casing wall
    • F42B5/196Coatings

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Paints Or Removers (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

Uprawniony z patentu: Dynamit Nobel AG, Troisdorf (Republika Federalna Niemiec) Bezluskowa wypraska ladunku miotajacego Wynalazek dotyczy bezluskowych wyprasek la¬ dunków miotajacych wykonanych z materialów wybuchowych spalajacych sie z umiarkowana predkoscia lub rozkladajacych sie przy deflagracji, niepodatnych na detonacje, jak nitroceluloza, poli- winyloazotan, nitroguanidyna, pentryt i podobne — lub z mieszaniny tych materialów. Wypraski te maja zastosowanie szczególnie do przyrzadów uzytku przemyslowego, jak pistolety do wstrzeli¬ wania kolków, aparaty udarowe, elementy obslu¬ gowe, wylaczniki szybkiego dzialania lub podobne.Jakkolwiek przy stosowaniu takich wyprasek osia¬ ga sie duze korzysci, poniewaz odpadaja uzywane zwykle luski nabojowe, to jednak ujawnia sie rów¬ niez ich powazna wada polegajaca na tym, ze nie- chroniona powierzchnia jest wrazliwa i wypraski wskutek latwej zapalnosci uzytych do ich wyko¬ nania materialów wybuchowych zapalaja sie sa¬ moczynnie lub tez moga byc zapalone nieumyslnie Z tego powodu wypraski mozna magazynowac i uzywac tylko przy zachowaniu okreslonych srod¬ ków ostroznosci.Poza tym niechroniona powierzchnia wyprasek wskutek absorpcyjnych wlasnosci zastosowanych substancji i zwykle porowatej budowy pobiera pary wody lub innych cieczy, a takze zanieczyszczenia jak tluszcz, olej, brud i podobne. Poza specjalnym obchodzeniem sie ze wzgledu na bezpieczenstwo nalezy wiec takze zachowywac odpowiednia sta- 30 rannosc manipulacji w prymitywnych zwykle wa¬ runkach operowania wypraskami w praktyce.Celem wynalazku jest usuniecie poprzednio wy¬ mienionych wad. Osiaga sie to wedlug wynalazku w ten sposób, ze wypraski zaopatruje sie w scisle przylegajaca, najlepiej cienka warstewke ochronna chroniaca przed nieumyslnym zapaleniem lub spa¬ leniem oraz przed zanieczyszczaniem i pobiera¬ niem wilgoci.Taka warstwe ochronna wytwarza sie przez de- nitrowanie powierzchni wypraski, tj. przez roz¬ klad grup nitrowych lub azotanowych na po¬ wierzchni. Odszczepianie grup nitrowych lub azo¬ tanowych na powierzchni materialu wyjsciowego osiaga sie w prosty sposób przez zanurzanie wy¬ prasek w kapieli z odpowiednich chemikaliów jak siarczyny lub hydrosiarczyny itp., a nastepnie usu¬ wanie produktów odszczepienia przez wymywanie.Ponadto lub tez zamiast tak wytworzonej war¬ stewki mozna nalozyc na wypraske warstewke ochronna z reakcyjnych zywic, np. poliuretanów, poliglicydów itp. albo zywic rozpuszczalnych jak np. polioctanu winylowego i polimerów miesza¬ nych, poliakrylanów jak równiez zawiesin na ba¬ zie polibutadienów, polioctanu winylowego i poli¬ akrylanów. Ponadto stosowane sa jako materialy do wytwarzania warstewek ochronnych takie pro¬ dukty jak metyloceluloza, glikolany celulozy lub podobne. 80 20280 202 3 Nakladanie warstewki ochronnej odbywa sie w zaleznosci od rodzaju zastosowanego materialu wyj¬ sciowego, przez zanurzanie, powlekanie lub wytra¬ canie z roztworu. Podczas gdy do zanurzania i po¬ wlekania nadaja sie lakiery poliuretanowe, które 5 moga byc stosowane zarówno jako polimery wstep¬ ne z dodatkowym usieciowaniem jak i jako gotowe lakiery, a takze wielofunkcyjne aromatyczne ete¬ ry glicydowe, mieszane polimery polietylenowo- -poliwinylooctanowe, poliestry akrylowe, zawiesi- 10 ny polioctanu winylowego, mieszane polimery po- libutadienowe i mieszane polimery poliakrylowe, to do wytracania stosuje sie najlepiej glikolany ce¬ lulozy.Jesli istnieje lub jest przewidziana masa zaplo- is nowa, to warstewka ochronna moze ja pokrywac lub ewentualnie takze przytwierdzac. Poniewaz przy postepowaniu wedlug wynalazku unika sie wnikania w porowata budowe wypraski, warstewka ochronna moze byc wobec tego bardzo cienka, ale 20 pomimo to niebezpieczenstwo manipulowania wy- praskami zostaje zredukowane do umiarkowanej wielkosci. Poza tym w znacznym stopniu unie¬ mozliwia sie glebsze przenikanie zanieczyszczen i poprawia sie odpornosc na obciazenia mecha- 25 niczne i zmniejsza scieralnosc — bez powstawa¬ nia znaczniejszych pozostalosci przy spalaniu.Przyklad. Z wilgotnej, wlóknistej nitrocelulozy o zawartosci azotu 12,6%, na która naniesiono 3% centralitu i 0,5 dwufenyloaminy, wykonano w ma- 30 trycy za pomoca prasy hydraulicznej tabletki o srednicy 6 mm i grubosci 5 mm. Na jednej z po¬ wierzchni posiadaja one skosne wglebienie o gle¬ bokosci 2 mm i o srednicy górnej 4 mm. Tabletki maja gladka powierzchnie i sa tak odporne na 35 dzialanie mechaniczne, ze nie lamia sie przy nor¬ malnej manipulacji. Porowata budowa daje sie jeszcze rozpoznac po tym, ze tabletka wsysa krople wody. Przed dalsza obróbka tableki poddaje sie suszeniu. Do zaglebienia wciera sie nastepnie 5 mg wilgotnej masy zaplonowej i tableke suszy sie az do pozbawienia wilgoci. Nastepnie tabletki prze¬ prowadza sie przez kapiel skladajaca sie z miesza¬ niny 20,4 czesci poliestru glikolowego o ciezarze czasteczkowym 1200, 6 czesci toluilenodwuizocja- nianu, 3 czesci ftalanu dwumetyloglikolowego oraz 70 czesci chlorku metylenu.Na powierzchni pozostaje blona roztworu, z któ¬ rej rozpuszczalnik bardzo szybko odparowuje.Wskutek stosowanego nastepnie ogrzewania po¬ wloka ulega utwardzeniu i tworzy dobrze przy¬ czepna cienka warstewke, która chroni mase pro¬ chowa ze wszystkich stron. PL PLProprietor of the patent: Dynamit Nobel AG, Troisdorf (Federal Republic of Germany) Fuseless molding of the propellant charge The invention concerns the moldless moldings of propelling landings made of explosives that burn at a moderate rate or that decompose when deflagrating, not susceptible to detonation, such as detonation. vinyl nitrate, nitroguanidine, pentrite and the like - or a mixture of these materials. These moldings are particularly applicable to industrial devices such as stud shotguns, impact devices, operating elements, quick-action switches or the like. However, when using such moldings there are great advantages, as the usual cartridge cases fall off. However, their serious drawback is also revealed, consisting in the fact that the unprotected surface is sensitive and the moldings due to the easy flammability of the explosives used to make them ignite rapidly or may be ignited inadvertently. may be stored and used only with the prescribed precautions. Moreover, the unprotected surface of the moldings, due to the absorptive properties of the substances used and the usually porous structure, absorbs vapors of water or other liquids, as well as contaminants such as grease, oil, dirt and the like. In addition to the special handling for safety reasons, it is therefore also necessary to take care of the age of manipulation under the usually primitive conditions of handling the compacts in practice. The object of the invention is to remedy the above-mentioned drawbacks. According to the invention, this is achieved by the fact that the moldings are provided with a tightly adhering, preferably a thin, protective film to protect against unintentional ignition or burning, and against contamination and moisture uptake. Such a protective layer is produced by denitrating the surface of the molding, that is, by the decomposition of nitro or nitrate groups on the surface. The cleavage of the nitro or nitrate groups on the surface of the starting material is simply achieved by immersing the pressurized in a bath of suitable chemicals such as sulphites or hydrosulphites and the like, and then removing the cleavage products by washing. In addition, or in place of the layer thus formed, The coils can be applied to the compacted protective film of reactive resins, for example polyurethanes, polyglycides and the like, or soluble resins, such as polyvinyl acetate and mixed polymers, polyacrylates, and also suspensions based on polybutadiene, polyvinyl acetate and polyacrylate. In addition, products such as methyl cellulose, cellulose glycolates or the like are used as materials for the production of protective films. 80 20280 202 3 The protective film is applied, depending on the type of starting material used, by dipping, coating or rolling out of solution. While polyurethane varnishes are suitable for dipping and coating, they can be used both as pre-polymers with additional cross-linking and as finished varnishes, as well as multifunctional aromatic glycide ethers, mixed polyethylene-polyvinylacetate polymers, polyesters. acrylic, polyvinyl acetate suspensions, mixed polybutadiene polymers and mixed polyacrylic polymers, cellulose glycolates are preferably used for precipitation. If there is or is provided a flame mass, the protective film may cover it or possibly also attach. Since penetration into the porous structure of the compact is avoided in the procedure according to the invention, the protective film may therefore be very thin, but nevertheless the risk of handling the compacts is reduced to a moderate size. In addition, a deeper penetration of contaminants is largely prevented and the resistance to mechanical stress is improved and the abrasion resistance is reduced - without the formation of significant residues upon combustion. Example. From moist, fibrous nitrocellulose with a nitrogen content of 12.6%, to which 3% of centralite and 0.5 of diphenylamine were applied, tablets with a diameter of 6 mm and a thickness of 5 mm were made in a matrix by means of a hydraulic press. On one of the surfaces they have a sloping indentation 2 mm deep and with an upper diameter of 4 mm. The tablets have a smooth surface and are so resistant to mechanical stress that they do not break with normal handling. The porous structure is also recognizable by the fact that the tablet sucks up drops of water. The tablets are dried before further processing. Then 5 mg of a moist ignition mass is rubbed into the cavity and the plate is dried until it is dehydrated. The tablets are then passed through a bath consisting of a mixture of 20.4 parts glycol polyester with a molecular weight of 1200, 6 parts toluene diisocyanate, 3 parts dimethyl glycol phthalate and 70 parts methylene chloride. The solvent evaporates very quickly. As a result of the subsequent heating, the coating hardens and forms a well-adhering thin film that protects the powder from all sides. PL PL

Claims (1)

1. Zastrzezenie patentowe Bezluskowa wypraska ladunku miotajacego z ma¬ terialów wybuchowych takich jak nitroceluloza, po- liwinyloazoitan, iidtroguanidyna, pientryt itd. albo z ich mieszanin, w szczególnosci do przyrzadów do uzytku przemyslowego jak przyrzady do wstrze¬ liwania kolków, aparaty udarowe, elementy obslu¬ gi, wylaczniki szybkiego dzialania lub tp., zna¬ mienna tym, ze jest zaopatrzona w silnie przylegajaca cienka warstewke ochronna, wytwo¬ rzona przez poddanie rozkladowi grup nitrowych albo azotanowych w powierzchni wypraski i/albo stanowiaca powloczke z zywic reakcyjnych, zy¬ wic rozpuszczalnych, metylocelulozy, karboksyme- tylocelulozy albo podobnych substancji. LDA — Zaklad Nr 2 — TYPO, zam. 586/76 — 100 egz. Cena 10 zl PL PL1. Claimed Claimless molding of a propellant charge from explosives such as nitrocellulose, polyvinyl azoitane, iidtroguanidine, pyrite, etc. or from mixtures thereof, in particular for devices for industrial use, such as shock-breakers, collet breakers, impact devices operators, quick-action switches or the like, characterized in that it is provided with a strongly adhering thin protective film, produced by subjecting the decomposition of nitro or nitrate groups in the surface of the molded part and / or constituting a coating of reactive resins, therefore, soluble, methyl cellulose, carboxymethyl cellulose or the like. LDA - Plant No. 2 - TYPO, dom. 586/76 - 100 copies. Price PLN 10 PL PL
PL1969135672A 1968-09-04 1969-09-04 PL80202B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1796118A DE1796118C3 (en) 1968-09-04 1968-09-04 Caseless propellant charge compact and process for its manufacture

Publications (1)

Publication Number Publication Date
PL80202B1 true PL80202B1 (en) 1975-08-30

Family

ID=5708368

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1969135672A PL80202B1 (en) 1968-09-04 1969-09-04

Country Status (16)

Country Link
JP (1) JPS4942531B1 (en)
AT (1) AT290362B (en)
BE (1) BE738397A (en)
BR (1) BR6912030D0 (en)
CA (1) CA936697A (en)
CH (1) CH500053A (en)
DE (1) DE1796118C3 (en)
DK (1) DK135678C (en)
ES (1) ES370815A1 (en)
FR (1) FR2017366A1 (en)
GB (1) GB1277247A (en)
IL (1) IL32928A (en)
NL (1) NL6913424A (en)
NO (1) NO122518B (en)
PL (1) PL80202B1 (en)
YU (1) YU34107B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2709037A1 (en) * 1977-03-02 1978-09-07 Dynamit Nobel Ag FIRM-WEATHER-PROOF DRIVE KIT FOR BOLT DRIVE CARTRIDGES
DE2710451C2 (en) * 1977-03-10 1990-11-15 Rheinmetall GmbH, 4000 Düsseldorf Surface protection coating for ammunition with a combustible case or caseless ammunition
FR2444251A1 (en) * 1978-12-15 1980-07-11 Poudres & Explosifs Ste Nale COMBUSTIBLE OBJECTS, AND IN PARTICULAR COMBUSTIBLE SOCKETS, RESISTANT TO HEAT
DE3006475C2 (en) * 1980-02-21 1986-10-30 Société Anonyme PRB, Brüssel / Bruxelles Fuel for base-bleed gas generators, process for its production and for the production of a propellant from this fuel
FR2590360B1 (en) * 1985-11-19 1989-06-30 Poudres & Explosifs Ste Nale MIXED LOADS FOR AMMUNITION WITH SOCKET COMPRISING FRAGMENTABLE SPHERICAL LOADS
WO2001019759A1 (en) * 1999-09-15 2001-03-22 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Propellant charge powder having low temperature dependency

Also Published As

Publication number Publication date
YU203669A (en) 1978-06-30
DE1796118C3 (en) 1978-08-17
AT290362B (en) 1971-05-25
DE1796118B2 (en) 1977-12-08
IL32928A (en) 1973-07-30
BE738397A (en) 1970-02-16
DE1796118A1 (en) 1972-02-17
IL32928A0 (en) 1970-12-24
CA936697A (en) 1973-11-13
DK135678B (en) 1977-06-06
JPS4942531B1 (en) 1974-11-15
FR2017366A1 (en) 1970-05-22
DK135678C (en) 1977-11-14
BR6912030D0 (en) 1973-03-20
YU34107B (en) 1978-12-31
GB1277247A (en) 1972-06-07
NL6913424A (en) 1970-03-06
CH500053A (en) 1970-12-15
NO122518B (en) 1971-07-05
ES370815A1 (en) 1971-07-01

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