EP0218067B1 - Dreibasiges Treibladungspulver und Verfahren zu seiner Herstellung - Google Patents

Dreibasiges Treibladungspulver und Verfahren zu seiner Herstellung Download PDF

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Publication number
EP0218067B1
EP0218067B1 EP86111683A EP86111683A EP0218067B1 EP 0218067 B1 EP0218067 B1 EP 0218067B1 EP 86111683 A EP86111683 A EP 86111683A EP 86111683 A EP86111683 A EP 86111683A EP 0218067 B1 EP0218067 B1 EP 0218067B1
Authority
EP
European Patent Office
Prior art keywords
propellant
solvent
zirconate
organic
propellant powder
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.)
Expired
Application number
EP86111683A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0218067A1 (de
Inventor
Dietmar Dr. Dipl.Chem Müller
Jürgen Dr. Dipl.Phys. Kremp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6280757&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0218067(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of EP0218067A1 publication Critical patent/EP0218067A1/de
Application granted granted Critical
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Classifications

    • 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
    • C06B23/006—Stabilisers (e.g. thermal stabilisers)
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B25/00—Compositions containing a nitrated organic compound
    • C06B25/18—Compositions containing a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B25/00—Compositions containing a nitrated organic compound
    • C06B25/18—Compositions containing a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition
    • C06B25/24—Compositions containing a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition with nitroglycerine
    • C06B25/26—Compositions containing a nitrated organic compound the compound being nitrocellulose present as 10% or more by weight of the total composition with nitroglycerine with an organic non-explosive or an organic non-thermic component

Definitions

  • the invention relates to a three-base propellant charge powder consisting of nitrocellulose (NC), nitroglycerin (NGL) or an equivalent explosive oil and crystalline nitroguanidine (NIGU), which by mixing together, plasticizing the NC with a solvent, e.g. Acetone, as well as by kneading the mixture into solid propellant bodies and containing an organic titanate or zirconate.
  • a solvent e.g. Acetone
  • Triple-base propellant powder has the advantage of high performance with low pipe erosion compared to single- and double-base propellant powders, properties that are primarily due to the content of nitroguanidine. This can range from 5% to over 50%, with the types M30, M31, NQ and MNF being mentioned as examples for the range between 45 and 53%.
  • These propellant powders are processed either discontinuously in kneaders or continuously in extruders to give shaped articles, in the latter case to form propellant strands, which are then cut into bodies from which propellant charges are then put together.
  • the plasticization and thus the formability is primarily determined by the content of nitrocellulose, which is caused by the solvent, e.g. Acetone, gets a gel structure and integrates the other components.
  • the mechanical strength in particular the brittleness, is significantly influenced by the nitroguanidine mixed in in crystalline form. This has shown an increased tendency to embrittlement, especially at low temperatures, even at normal application temperatures down to minus 40 ° C.
  • the cold embrittlement results in a very unfavorable internal ballistic when bombarding such propellant charge powders, especially those with a high NIGU content, which extends to the point where the powder is unusable.
  • the object of the invention is to improve the embrittlement behavior of three-base propellant charge powders, in particular to reduce or exclude cold embrittlement.
  • This object is achieved in the case of a three-base propellant charge powder of the structure described at the outset in that the mixture comprises at least one organic titanate from the group consisting of the monoalkoxy, chelate, quat (quaternary), neoalkoxy, cycloheteroatom or coordinated titanates and / or at least contains an organic zirconate from the group of neoalkoxy zirconates with a proportion ⁇ 2% in dispersed form.
  • the reason for the improvement of the cold embrittlement may be the fact that the titanates and zirconates are responsible for a better adhesion between the plasticized parts and the NIGU crystals and thereby the structure, possibly also the adhesion between the crystals, becomes more stable.
  • the use of heavy metal chelate complexes and among them also a titanium chelate complex is known for single- and multi-base propellant charge powders (DE-A-3 150 290), this is intended to improve the bulk behavior, in particular to increase the bulk density.
  • the propellant charge powder is provided with a surface coating made of the heavy metal chelate complex, which is applied, for example, by spraying. This coating reduces particle friction and thus improves the flow behavior.
  • other properties of the chelate complexes are used by a different type of processing.
  • three-base propellant charge powders are produced essentially by two methods.
  • alcohol-moist NC, desensitized NGL or the explosive oil with the same effect, crystalline NIGU and a solvent, for example acetone are applied to a batch kneader, homogenized and plasticized, and if necessary the plasticized mass is temporarily stored. This mass is then formed into propellant strands and then cut or granulated into bodies.
  • this method is now modified in such a way that the organic titanate and / or zirconate is used directly or in a mixture with the solution is added to the kneading batch. Since the organic titanates and zirconates are liquids, they can easily be mixed homogeneously with the other constituents or added in a premix with the solvent.
  • the aforementioned components are placed on an extruder and continuously formed into propellant powder strands.
  • This method can also be used to produce propellant charge powders constructed in accordance with the invention in that the organic titanate and / or zirconate is applied to the extruder directly or in a mixture with the solvent or in a mixture with this and the NGL or the explosive oil having the same effect.
  • the improvement in cold embrittlement of the propellant charge powders assembled and produced according to the invention was determined by loading cylindrical test specimens in the axial direction and transversely thereto by means of a defined drop weight with a defined impact speed similar to the drop hammer test for measuring the mechanical inflammation behavior.
  • the propellant charge bodies were loaded at plus 21 ° C and minus 40 ° C with a drop weight of 1 kg at a drop height of 0.2 to 0.5 m.
  • Propellant powder bodies with 7-hole geometry were examined (diameter of the bodies 8.6 mm and length 19.8 mm or diameter 8.0 mm and length 19.0 mm. Weight of the individual bodies 1.30 g to 1, 45 g).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Medicinal Preparation (AREA)
  • Materials For Medical Uses (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP86111683A 1985-09-12 1986-08-22 Dreibasiges Treibladungspulver und Verfahren zu seiner Herstellung Expired EP0218067B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3532525 1985-09-12
DE19853532525 DE3532525A1 (de) 1985-09-12 1985-09-12 Dreibasiges treibladungspulver und verfahren zu seiner herstellung

Publications (2)

Publication Number Publication Date
EP0218067A1 EP0218067A1 (de) 1987-04-15
EP0218067B1 true EP0218067B1 (de) 1989-10-18

Family

ID=6280757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111683A Expired EP0218067B1 (de) 1985-09-12 1986-08-22 Dreibasiges Treibladungspulver und Verfahren zu seiner Herstellung

Country Status (3)

Country Link
US (1) US4713127A (enrdf_load_stackoverflow)
EP (1) EP0218067B1 (enrdf_load_stackoverflow)
DE (2) DE3532525A1 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6197135B1 (en) * 1986-02-18 2001-03-06 Kenrich Petrochemicals, Inc. Enhanced energetic composites
AU632562B2 (en) * 1989-05-11 1993-01-07 Wnc-Nitrochemie Gmbh Process and device for producing a tribasic propellent powder
DE4012294C1 (enrdf_load_stackoverflow) * 1989-05-11 1991-02-14 Wnc-Nitrochemie Gmbh, 8261 Aschau, De
DE4233629C2 (de) * 1992-10-06 1994-09-15 Wasagchemie Sythen Gmbh Verfahren zur Herstellung eines Pulver-Vorproduktes und Pulver-Vorprodukt
CN100441550C (zh) * 1996-07-22 2008-12-10 大赛璐化学工业株式会社 用于气囊的产气剂
US6562161B1 (en) 1997-03-24 2003-05-13 Daicel Chemical Industries, Ltd. Gas generating compositions for air bag
JP2963086B1 (ja) 1997-12-26 1999-10-12 ダイセル化学工業株式会社 エアバッグ用ガス発生器及びエアバッグ装置
US10252954B1 (en) * 2016-05-17 2019-04-09 The United States Of America As Represented By The Secretary Of The Army Multi-layered stable propellant composition

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE484613A (enrdf_load_stackoverflow) *
DE922815C (de) * 1951-06-18 1955-01-27 Ici Ltd Verfahren zur Herstellung von Sprenggelatine
US3186882A (en) * 1962-01-12 1965-06-01 Holt Erich Von Nitrocellulose containing explosive compositions and methods of preparing same
US3894894A (en) * 1962-06-08 1975-07-15 Us Navy Modified double base propellants with diisocyanate crosslinker
GB1411936A (en) * 1967-03-21 1975-10-29 Imp Metal Ind Kynoch Ltd Rocket motors
DE2329558C3 (de) * 1973-06-09 1978-10-05 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen Gießfähige Gasgeneratortreibstoffe
US4486317A (en) * 1981-01-16 1984-12-04 E. I. Du Pont De Nemours And Company Stabilization of thickened aqueous fluids
DE3150290C2 (de) * 1981-12-18 1986-06-05 WNC-Nitrochemie GmbH, 8261 Aschau Treibladungspulver mit einer glättenden Oberflächen-Beschichtung sowie Verfahren zur Herstellung
US4597924A (en) * 1985-10-21 1986-07-01 The United States Of America As Represented By The Secretary Of The Army Tetra-alkyl titanates as bonding agents for thermoplastic propellants

Also Published As

Publication number Publication date
DE3532525C2 (enrdf_load_stackoverflow) 1988-06-01
US4713127A (en) 1987-12-15
EP0218067A1 (de) 1987-04-15
DE3666416D1 (en) 1989-11-23
DE3532525A1 (de) 1987-03-19

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