Low temperature, extrudable, high density reactive materials
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C06B-045/10
F42B-001/032
C06B-027/00
F42B-012/32
출원번호
US-0507605
(2009-07-22)
등록번호
US-RE45899
(2016-02-23)
발명자
/ 주소
Nielson, Daniel B.
Truitt, Richard M.
Rasmussen, Nikki
출원인 / 주소
Orbital ATK, Inc.
대리인 / 주소
TraskBritt
인용정보
피인용 횟수 :
0인용 특허 :
123
초록▼
A reactive material for use as a reactive liner in penetrating (shape-charge) warheads and for use in reactive fragments in fragmenting warheads is disclosed. The reactive material comprises an oxidizing agent and a metal filler or metal/metal oxide filler. The oxidizing agent comprises a fluoropoly
A reactive material for use as a reactive liner in penetrating (shape-charge) warheads and for use in reactive fragments in fragmenting warheads is disclosed. The reactive material comprises an oxidizing agent and a metal filler or metal/metal oxide filler. The oxidizing agent comprises a fluoropolymer having high fluorine content, a low melt temperature, and a high mechanical strength. Preferably, the fluoropolymer is a thermoplastic fluoropolymer, such as a polymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride. The metal filler comprises a high density, reactive metal. Preferably, the metal filler is hafnium or tantalum. The reactive material is safely processed at temperatures significantly below the thermal autoignition point of the reactive material.
대표청구항▼
1. A composition for a reactive material, comprisingconsisting of: an oxidizing agent comprising a fluoropolymer selected from the group consisting of a thermoplastic terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a thermoplastic copolymer of tetrafluoroethylene and
1. A composition for a reactive material, comprisingconsisting of: an oxidizing agent comprising a fluoropolymer selected from the group consisting of a thermoplastic terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a thermoplastic copolymer of tetrafluoroethylene and perfluorovinylether, a thermoplastic copolymer of tetrafluoroethylene and ethylene, and a thermoplastic copolymer of tetrafluoroethylene and hexafluoropropylene; andat least one metal filler,the fluoropolymer present in the composition at from approximately 15% by weight to approximately 90% by weight. 2. The composition of claim 1, wherein the fluoropolymer is present in the reactive material at approximately 15-90% by weight. 3. The composition of claim 1, wherein the fluoropolymer is present in the reactive materialcomposition at from approximately 25% by weight to approximately 25-75%75% by weight. 4. The composition of claim 1, wherein the oxidizing agent has a fluorine content of greater than approximately 45% by weight. 5. The composition of claim 1, wherein the at least one metal filler comprises a metal having a density approximately equal to or greater than the density of magnesium. 6. The composition of claim 1, wherein the at least one metal filler is present in the reactive materialcomposition at from approximately 10% by weight to approximately 10-85%85% by weight. 7. The composition of claim 1, wherein the at least one metal filler is selected from the group consisting of magnesium, aluminum, magnesium/aluminum alloys, iron, copper, zirconium, titanium, zinc, manganese, tin, boron, silicon, hafnium, tungsten, depleted uranium, and tantalum, and metal carbides, oxides, and nitrides thereof. 8. The composition of claim 1, wherein the at least one metal filler is a metal/metal oxide thermite or a metal/metal intermetallic. 9. The composition of claim 1, wherein a processing temperature of the reactive material is substantially below a thermal autoignition temperature of the reactive material. 10. An article comprising a liner formed from a reactive material, the reactive material, comprising: a reactive material liner consisting of:an oxidizing agent comprising a fluoropolymer selected from the group consisting of a thermoplastic terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a thermoplastic copolymer of tetrafluoroethylene and perfluorovinylether, a thermoplastic copolymer of tetrafluoroethylene and ethylene, and a thermoplastic copolymer of tetrafluoroethylene and hexafluoropropylene; andat least one metal filler,the fluoropolymer present in the reactive material liner at from approximately 15% by weight to approximately 90% by weight. 11. The article of claim 10, wherein the at least one metal filler comprises a metal having a density approximately equal to or greater than the density of magnesium. 12. The article of claim 10, wherein the at least one metal filler is selected from the group consisting of magnesium, aluminum, magnesium/aluminum alloys, iron, copper, zirconium, titanium, zinc, manganese, tin, boron, silicon, hafnium, tungsten, depleted uranium, and tantalum, and metal carbides, oxides, and nitrides thereof. 13. The article of claim 10, wherein the at least one metal filler is a metal/metal oxide thermite or a metal/metal intermetallic. 14. The article of claim 10, wherein the at least one metal filler is present in the reactive material at approximately 10-85% by weight. 15. The article of claim 10, wherein a processing temperature of the reactive material is substantially below a thermal autoignition temperature of the reactive material. 16. The article of claim 10, wherein the fluoropolymer is present in the reactive material at approximately 15-90% by weight. 17. The ice of claim 10, wherein the fluoropolymer is present in the reactive material at approximately 25-75% by weight. 18. A method of processing a reactive material, comprising: mixing at least one metal filler with an oxidizing agenta fluoropolymer to form a reactive material consisting of the at least one metal filler and the fluoropolymer, the oxidizing agent comprising a fluoropolymer selected from the group consisting of a thermoplastic terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a thermoplastic copolymer of tetrafluoroethylene and perfluorovinylether, a thermoplastic copolymer of tetrafluoroethylene and ethylene, and a thermoplastic copolymer of tetrafluoroethylene and hexafluoropropylene, and the fluoropolymer present in the reactive material at from approximately 15% by weight to approximately 90% by weight; andprocessing the reactive material at a temperature that does not exceed a thermal autoignition temperature of the reactive material. 19. The method of claim 18, wherein mixing at least one metal filler with an oxidizing agent comprises mixing the at least one metal filler selected from the group consisting of magnesium, aluminum, magnesium/aluminum alloys, iron, copper, zirconium, titanium, zinc, manganese, tin, boron, silicon, hafnium, tungsten, depleted uranium, and tantalum, and metal carbides, oxides, and nitrides thereof, with the oxidizing agent. 20. The method of claim 18, wherein mixing at least one metal filler with an oxidizing agent comprises mixing at least one metal/metal oxide with the oxidizing agent. 21. A method of processing a reactive material, comprising: mixing a metal filler with an oxidizing agent to form a reactive material, the oxidizing agent comprising a fluoropolymer selected from the group consisting of a thermoplastic terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a thermoplastic copolymer of tetrafluoroethylene and perfluorovinylether, a thermoplastic copolymer of tetrafluoroethylene and ethylene, and a thermoplastic copolymer of tetrafluoroethylene and hexafluoropropylene; andprocessing the reactive material at a temperature substantially below a thermal autoignition point of the reactive material. 22. An artillery projectile comprising a liner formed from a reactive material, the reactive material, comprising: an oxidizing agent comprising a fluoropolymer selected from the group consisting of a thermoplastic terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a thermoplastic copolymer of tetrafluoroethylene and perfluorovinylether, a thermoplastic copolymer of tetrafluoroethylene and ethylene, and a thermoplastic copolymer of tetrafluoroethylene and hexafluoropropylene; andat least one metal fillera reactive material liner consisting of:a fluoropolymer selected from the group consisting of a thermoplastic terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a thermoplastic copolymer of tetrafluoroethylene and perfluorovinylether, a thermoplastic copolymer of tetrafluoroethylene and ethylene, and a thermoplastic copolymer of tetrafluoroethylene and hexafluoropropylene; andat least one metal filler,the fluoropolymer present in the reactive material liner at from approximately 15% by weight to approximately 90% by weight. 23. A warhead comprising fragments or a liner formed from a reactive material, the reactive material, comprising: an oxidizing agent comprising a fluoropolymer selected from the group consisting of a thermoplastic terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a thermoplastic copolymer of tetrafluoroethylene and perfluorovinylether, a thermoplastic copolymer of tetrafluoroethylene and ethylene, and a thermoplastic copolymer of tetrafluoroethylene and hexafluoropropylene; andat least one metal fillerreactive material fragments or a reactive material liner, the reactive material fragments or the reactive material liner consisting of: a fluoropolymer selected from the group consisting of a thermoplastic terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a thermoplastic copolymer of tetrafluoroethylene and perfluorovinylether, a thermoplastic copolymer of tetrafluoroethylene and ethylene, and a thermoplastic copolymer of tetrafluoroethylene and hexafluoropropylene; andat least one metal filler,the fluoropolymer present in the reactive material fragments or the reactive material liner at from approximately 15% by weight to approximately 90% by weight. 24. A warhead for use in a projectile, comprising: a case;an explosive material;an initiator; anda liner or fragments, the liner or fragments formed from a reactive material comprisingconsisting of at least one metal filler and an oxidizing agent, wherein the oxidizing agent comprises afrom approximately 15% by weight to approximately 90% by weight of a fluoropolymer, the fluoropolymer selected from the group consisting of a thermoplastic terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, a thermoplastic copolymer of tetrafluoroethylene and perfluorovinylether, a thermoplastic copolymer of tetrafluoroethylene and ethylene, and a thermoplastic copolymer of tetrafluoroethylene and hexafluoropropylene.
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