EP0323985B1 - Water-resistant elastic explosive material - Google Patents

Water-resistant elastic explosive material Download PDF

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Publication number
EP0323985B1
EP0323985B1 EP88905247A EP88905247A EP0323985B1 EP 0323985 B1 EP0323985 B1 EP 0323985B1 EP 88905247 A EP88905247 A EP 88905247A EP 88905247 A EP88905247 A EP 88905247A EP 0323985 B1 EP0323985 B1 EP 0323985B1
Authority
EP
European Patent Office
Prior art keywords
explosive material
rubber
water
inert
explosive
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 - Lifetime
Application number
EP88905247A
Other languages
German (de)
French (fr)
Other versions
EP0323985A1 (en
Inventor
Ingemar Persson
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.)
Exploweld AB
Original Assignee
Exploweld AB
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 Exploweld AB filed Critical Exploweld AB
Priority to AT88905247T priority Critical patent/ATE78811T1/en
Publication of EP0323985A1 publication Critical patent/EP0323985A1/en
Application granted granted Critical
Publication of EP0323985B1 publication Critical patent/EP0323985B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the present invention therefore, relates to an explosive material consisting of one or several self-detonating explosives desensitized with wax or water, such as PETN, HMX, TNT or RDX, and one or several inert materials, and is characterized, in that the inert material or a part thereof consists of a rubber of the type silicone rubber or latex rubber, which inert material constitutes matrix or binding agent, and that components comprised after their mixing together constitute a compound, which can be cast, extruded or rolled-out.
  • the inert material or a part thereof consists of a rubber of the type silicone rubber or latex rubber, which inert material constitutes matrix or binding agent, and that components comprised after their mixing together constitute a compound, which can be cast, extruded or rolled-out.

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Molecular Biology (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Sealing Material Composition (AREA)

Abstract

Explosive material consisting of one or several self-detonating explosives, such as PETN, HMX, TNT or RDX, desensitized by wax or water and one or several inert materials. The invention is characterized in that the inert material or a part thereof consists of a rubber of the type silicone rubber or latex rubber, which inert material constitutes matrix or binding agent, and that components comprised after being mixed together constitute a compound, which can be cast, extruded or rolled-out.

Description

  • This invention relates to a water-resistent elastic explosive material.
  • It is known that explosive materials containing a self-detonating explosive, as for example PETN, HMX, RDX or TNT, can be manufactured with casting plastics as matrix.
  • The manufacture of these so-called PBX-explosives, however, is expensive and complicated,due to the fact, that the self-detonating explosives must be added in sensitized state, because the curing process of the plastic material is affected considerably by existing desensitizing agents, such as wax, oil or water.
  • Owing to their high sensitivity and the risks associated therewith, the handling of sensitized explosives is complicated and requires special premises and special equipment, which limits the rate of production.
  • The mouldable plastics, as a rule, are per se injurious to health and, therefore, require effective protective equipment. When the temperature in the cast compound is not kept under accurate control, local temperature increases can be so high that the explosive reacts, resulting in an explosion. The PBX-explosives at their detonation or combustion also yield products which are injurious to health or corrosive.
  • Explosive material according to the present invention can be manufactured and used without the aforesaid disadvantages and risks.
  • One desire is to be able to work with desensitized explosives. It is, however, not possible to use mouldable plastics as matrix material when the desensitizing agent is, for example, oil or wax, because such plastics solve the desensitizing agent. Water can also be used as desensitizing agent, but for example water-desensitized pentyl together with a mouldable plastic gives rise to a substantial increase in volume.
  • The present invention, however, renders it possible to work with desensitized explosives in order to produce a water-resistant and elastic explosive material.
  • The present invention, therefore, relates to an explosive material consisting of one or several self-detonating explosives desensitized with wax or water, such as PETN, HMX, TNT or RDX, and one or several inert materials, and is characterized, in that the inert material or a part thereof consists of a rubber of the type silicone rubber or latex rubber, which inert material constitutes matrix or binding agent, and that components comprised after their mixing together constitute a compound, which can be cast, extruded or rolled-out.
  • As matrix and binding agent, thus, either silicone rubber or latex rubber can be used. Both these materials are innocious to environment, non-toxic and do not give rise to dangerous temperature increases at curing. They are entirely inert in relation to explosives such as PETN, TNT, HMX or RDX. At casting with silicone rubber or latex, for example, wax-desensitized PETN can be used.
  • At casting with latex also water-desensitized explosives can be used. Latex rubber, however, is restricted to the casting of thin layers, because it must be possible that water evaporates at the curing. Layers of greater thickness, however, can be obtained by stacking or winding several cured thin layers one upon the other. In the case of silicone as well as latex rubber further additions can be made, for example metal powder for adjusting the density or micro-spheres of plastic or glass for controlling the initiating capacity.
  • Some examples of explosive material according to the invention are described in the following.
    • Example 1
  • The following ingredients were weighed out and mixed:
       37,6% wax-desensitized PETN (7% wax)
       15% iron powder
       6,4% micro-spheres of glass
       41% silicone rubber
  • The mixture was cast in moulds to 25 mm layers. The solidified explosive bodies detonated with the rate 7800 m/s.
    • Example 2
  • The following ingredients were weighed out and mixed:
       87% wax-desensitized PETN
       13% latex
  • The mixture was cast to layer thickness 3 mm. Strips of 16 mm width were initiated with detonator cap and detonated with the rate 7800 m/s.
    • Example 3
  • A mixture according to Example 1 was cast to 3 mm layers. A stack of five strips, 16 mm wide, was detonated with a rate of 3500 m/s.
    • Example 4
  • A mixture of:
       43% water-desensitized HMX
       13,7% iron powder
       5,9% micro-spheres of glass
       37,5% latex
  • The mixture was cast on gauze to a web of 3 mm thickness and after casting was covered by an additional gauze. The gauze was intended as mechanical reinforcement. Five strips of 50 mm width were stacked upon each other and initiated. The detonation rate was measured to be 3400 m/s. When another strip of 50 mm width was wound five turns one upon the other about a cardboard pipe of 100 mm diameter and detonated, the same detonation rate was obtained.
  • It is, thus, possible to manufacture explosive material with rubber of silicone or latex type in a simple way, which material has different thicknesses and properties. Charges of the type manufactured according to the formula in Example 1 above have proved to readily detonate at a water depth of 450 m, immersed into a water-filled mine. Even charges, which had been lying immersed during the period of one month, could be detonated without problem.
  • According to a preferred embodiment, the inert material consists, as mentioned, in addition to said rubber of a metal powder and/or hollow micro-spheres of glass or plastic.
  • According to another preferred embodiment, a mechanical reinforcement of a fabric, wires or fibres of textile material or glass fibres is located cast-in in the explosive material.
  • The inventor has discovered by experiments, that at explosive material containing latex rapid solidification on the surface can take place when the material is brought into contact with acetone or alcohol. Strings with a diameter of 7 mm, for example, were extruded down into a bath of acetone. Due to the surface solidification, the strings became so manageable that they could be wound on a drying reel. This condition facilitates substantially a mass production of the explosive material.
  • According to a preferred embodiment , therefore, the explosive material is made so that, when the matrix or binding agent consists of latex, a rapid solidification of the surface of the explosive material has taken place by the effect of a coagulating liquid such as acetone or alcohol.

Claims (4)

1. Explosive material consisting of one or several Self-detonating explosives, such as PETN, HMX, TNT or RDX, desensitized with wax or water and one or several inert materials, characterized in that the inert material or a part thereof consists of a rubber of the type silicone rubber or latex rubber, which inert material constitutes the matrix or binding agent, and that the components comprised after being mixed together constitute a compound which can be cast, extruded or rolled-out.
2. Explosive material as defined in claim 1, characterized in that the inert material in addition to said rubber consists of a metal powder and/or hollow micro-spheres of glass or plastic.
3. Explosive material as defined in claim 1 or 2, characterized in that a mechanical reinforcement of a fabric, wires or fibres of textile material or glass fibres is located cast-in in the explosive material.
4. Explosive material as defined in claim 1,2 or 3, in cases when the matrix or binding agent consists of latex, characterized in that a rapid solidification of the surface of the explosive material has taken place by the effect of a coagulating liquid, such as acetone or alcohol.
EP88905247A 1987-06-04 1988-05-25 Water-resistant elastic explosive material Expired - Lifetime EP0323985B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88905247T ATE78811T1 (en) 1987-06-04 1988-05-25 WATER RESISTANT ELASTIC EXPLOSIVE MATERIAL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8702352 1987-06-04
SE8702352A SE460901B (en) 1987-06-04 1987-06-04 WATER RESISTANT ELASTIC EXPLOSIVE MATERIAL

Publications (2)

Publication Number Publication Date
EP0323985A1 EP0323985A1 (en) 1989-07-19
EP0323985B1 true EP0323985B1 (en) 1992-07-29

Family

ID=20368768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88905247A Expired - Lifetime EP0323985B1 (en) 1987-06-04 1988-05-25 Water-resistant elastic explosive material

Country Status (6)

Country Link
EP (1) EP0323985B1 (en)
AT (1) ATE78811T1 (en)
DE (1) DE3873302T2 (en)
NO (1) NO169833C (en)
SE (1) SE460901B (en)
WO (1) WO1988009779A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104370668A (en) * 2014-11-21 2015-02-25 山西北化关铝化工有限公司 Rubber explosive for explosion hardening
DE102019003432A1 (en) * 2019-05-15 2020-11-19 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Warhead

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9003613D0 (en) * 1990-02-16 1990-04-11 Explosives Tech Eti Method of reducing the overloading of a borehole and explosive composition used therefor
JP5064511B2 (en) 2006-11-02 2012-10-31 エフ．ホフマン−ラ ロシュ アーゲー Substituted 2-imidazoles as trace amine-related receptor modulators
CN113754508A (en) * 2021-06-10 2021-12-07 沈阳消应爆破工程有限公司 Explosive for eliminating welding residual stress by explosion method and preparation method thereof
AT525440B1 (en) * 2022-06-23 2023-04-15 Aeeg Applied Explosives & Energetics Gmbh Plastic explosive composition

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067213A (en) * 1935-06-17 1937-01-12 Trojan Powder Co Explosive
US3151010A (en) * 1955-02-11 1964-09-29 Phillips Petroleum Co Method of preparing a solid composite propellant
US3104995A (en) * 1956-01-27 1963-09-24 Phillips Petroleum Co Solid propellent compositions
US3376175A (en) * 1963-04-18 1968-04-02 North American Rockwell Prereaction of binders for quickmix processing of propellants
DE2027709C3 (en) * 1970-06-05 1978-10-19 Dynamit Nobel Ag, 5210 Troisdorf Plastic, easily deformable explosive mass by hand
US4019932A (en) * 1974-07-11 1977-04-26 Dow Corning Corporation Incendiary composition
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
SE449527C (en) * 1985-06-20 1988-12-08 Nobel Kemi Ab EXPLOSIVE CHARGING FOR EXPLOSION OF ROUGH PIPES, AND WAY TO MANUFACTURE THEM

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104370668A (en) * 2014-11-21 2015-02-25 山西北化关铝化工有限公司 Rubber explosive for explosion hardening
CN104370668B (en) * 2014-11-21 2016-06-29 山西北化关铝化工有限公司 Explosion hardening rubber explosive
DE102019003432A1 (en) * 2019-05-15 2020-11-19 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH Warhead
DE102019003432B4 (en) 2019-05-15 2022-08-25 TDW Gesellschaft für verteidigungstechnische Wirksysteme mbH warhead

Also Published As

Publication number Publication date
NO890313D0 (en) 1989-01-25
NO890313L (en) 1989-01-25
SE8702352L (en) 1988-12-05
SE8702352D0 (en) 1987-06-04
NO169833C (en) 1992-08-12
NO169833B (en) 1992-05-04
ATE78811T1 (en) 1992-08-15
EP0323985A1 (en) 1989-07-19
WO1988009779A1 (en) 1988-12-15
DE3873302T2 (en) 1993-02-25
SE460901B (en) 1989-12-04
DE3873302D1 (en) 1992-09-03

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