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69 条记录 (耗时 0.014 秒)

    Explosively driven low-density foams and powders
    31.
    发明申请
    Explosively driven low-density foams and powders 失效
    爆炸驱动的低密度泡沫和粉末

    公开(公告)号：US20050230018A1

    公开(公告)日：2005-10-20

    申请号：US10947815

    申请日：2004-09-22

    申请人： James Viecelli ,  Lowell Wood ,  Muriel Ishikawa ,  John Nuckolls ,  Phillip Pagoria

    发明人： James Viecelli ,  Lowell Wood ,  Muriel Ishikawa ,  John Nuckolls ,  Phillip Pagoria

    IPC分类号： C06B25/34 ,  C06B33/08 ,  C06B45/00 ,  C06B45/14

    CPC分类号： C06B33/08 ,  C06B45/00 ,  C06B45/14

    摘要： Hollow RX-08HD cylindrical charges were loaded with boron and PTFE, in the form of low-bulk density powders or powders dispersed in a rigid foam matrix. Each charge was initiated by a Comp B booster at one end, producing a detonation wave propagating down the length of the cylinder, crushing the foam or bulk powder and collapsing the void spaces. The PdV work done in crushing the material heated it to high temperatures, expelling it in a high velocity fluid jet. In the case of boron particles supported in foam, framing camera photos, temperature measurements, and aluminum witness plates suggest that the boron was completely vaporized by the crush wave and that the boron vapor turbulently mixed with and burned in the surrounding air. In the case of PTFE powder, X-ray photoelectron spectroscopy of residues recovered from fragments of a granite target slab suggest that heating was sufficient to dissociate the PTFE to carbon vapor and molecular fluorine which reacted with the quartz and aluminum silicates in the granite to form aluminum oxide and mineral fluoride compounds.

    摘要翻译： 空心RX-08HD圆柱形电荷装载有分散在刚性泡沫基体中的低堆积密度粉末或粉末形式的硼和PTFE。 每次充电由Comp B增压器在一端引发，产生沿气缸长度传播的爆震波，破碎泡沫或散装粉末并使空隙空间倒塌。 在将材料加热到高温时将PdV粉碎，以高速流体射流排出。 在支撑在泡沫中的硼颗粒的情况下，框架照相机照片，温度测量和铝试验板表明硼被粉碎波完全蒸发，并且硼蒸气在周围空气中湍动混合并燃烧。 在PTFE粉末的情况下，从花岗岩靶板的碎片中回收的残留物的X射线光电子能谱表明，加热足以将PTFE离解成碳蒸气和与花岗岩中的石英和硅酸铝反应的分子氟形成 氧化铝和矿物氟化物。

    Explosive composition and its use
    32.
    发明申请
    Explosive composition and its use 失效
    爆炸成分及其用途

    公开(公告)号：US20050072502A1

    公开(公告)日：2005-04-07

    申请号：US10360495

    申请日：2003-02-06

    申请人： Achim Hofmann ,  Horst Laucht ,  Dimitri Kovalev ,  Victor Timoshenko ,  Joachim Diener ,  Nicolai Kunzner ,  Egon Gross

    发明人： Achim Hofmann ,  Horst Laucht ,  Dimitri Kovalev ,  Victor Timoshenko ,  Joachim Diener ,  Nicolai Kunzner ,  Egon Gross

    IPC分类号： B60R22/46 ,  B60R21/26 ,  C06B21/00 ,  C06B33/00 ,  C06B33/04 ,  C06B33/06 ,  C06B33/08 ,  C06B45/00 ,  C06C7/00 ,  C06C9/00

    CPC分类号： C06B33/00 ,  C06B45/00 ,  C06C9/00

    摘要： An explosive composition comprises a porous fuel and an oxidizer. The porous fuel is a solid with a structure size measuring between about 2 nm and 1000 nm and has a porosity that lies between 10% and 98%. The oxidizer is solid or liquid at room temperature and is incorporated into the pores of the porous fuel. The oxidizer is selected, in an amount of at least 50% by weight relative to a total quantity of the oxidizer, from the group consisting of hydrogen peroxide, hydroxylammonium nitrate, organic nitro compounds or nitrates, alkali metal nitrates or earth alkali metal nitrates as well as metal nitrites, metal chlorates, metal perchlorates, metal bromates, metal iodates, metal oxides, metal peroxides, ammonium perchlorate, ammonium nitrate and mixtures thereof.

    摘要翻译： 爆炸性组合物包含多孔燃料和氧化剂。 多孔燃料是具有约2nm和1000nm之间的结构尺寸的固体，其孔隙率在10％和98％之间。 氧化剂在室温下为固体或液体，并且并入多孔燃料的孔中。 氧化剂的选择量相对于氧化剂总量为至少50重量％，由过氧化氢，硝酸羟铵，有机硝基化合物或硝酸盐，碱金属硝酸盐或碱土金属硝酸盐组成， 以及金属亚硝酸盐，金属氯酸盐，金属高氯酸盐，金属溴酸盐，金属碘酸盐，金属氧化物，金属过氧化物，高氯酸铵，硝酸铵及其混合物。

    Autoignition composition
    33.
    发明授权
    Autoignition composition 失效
    自燃组成

    公开(公告)号：US5959242A

    公开(公告)日：1999-09-28

    申请号：US645945

    申请日：1996-05-14

    申请人： Gregory D. Knowlton ,  Christopher P. Ludwig

    发明人： Gregory D. Knowlton ,  Christopher P. Ludwig

    IPC分类号： C06B33/00 ,  C06C9/00 ,  C06B33/08

    CPC分类号： C06B33/00 ,  C06C9/00

    摘要： The present invention relates to an autoignition composition for safely initiating combustion of a main pyrotechnic charge in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. The autoignition compositions of the invention include a mixture of an oxidizer composition and a powdered metal, wherein the oxidizer composition includes at least one of an alkali metal or an alkaline earth metal nitrate, a complex salt nitrate, such as Ce(NH.sub.4).sub.2 (NO.sub.3).sub.6 or ZrO(NO.sub.3).sub.2, a dried, hydrated nitrate, such as Ca(NO.sub.3).sub.2.4H.sub.2 O or Cu(NO.sub.3).sub.2.2.5 H.sub.2 O, silver nitrate, an alkali or alkaline earth chlorate, an alkali or alkaline earth metal perchlorate, ammonium perchlorate, a nitrite of sodium, potassium, or silver, or a solid organic nitrate, nitrite, or amine, such as guanidine nitrate, nitroguanidine and 5-aminotetrazole, respectively. The present invention also relates to a method for initiating a gas generator or pyrotechnic composition in a gas generator or pyrotechnic device exposed to flame or a high temperature environment. In the method of the invention, the gas generator or pyrotechnic composition is placed in thermal contact with an autoignition composition of the invention.

    摘要翻译： 本发明涉及一种用于在暴露于火焰或高温环境的气体发生器或烟火装置中安全地起动主要烟火炸药燃烧的自燃组合物。 本发明的自燃组合物包括氧化剂组合物和粉末金属的混合物，其中氧化剂组合物包括碱金属或碱土金属硝酸盐，络合盐硝酸盐，例如Ce（NH 4）2（ NO 3）6或ZrO（NO 3）2，干燥的水合硝酸盐如Ca（NO 3）2·4H 2 O或Cu（NO 3）2·2H 2 O，硝酸银，碱金属或碱土金属氯酸盐，碱金属或碱土金属 高氯酸铵，高氯酸铵，钠，钾或银的亚硝酸盐，或固体有机硝酸盐，亚硝酸盐或胺，如硝酸胍，硝基胍和5-氨基四唑。 本发明还涉及在暴露于火焰或高温环境的气体发生器或烟火装置中启动气体发生器或烟火组合物的方法。 在本发明的方法中，气体发生器或烟火组合物与本发明的自燃组合物热接触。

    Method of increasing the burning rate enhancement by mechanical accelerators
    35.
    发明授权
    Method of increasing the burning rate enhancement by mechanical accelerators 失效
    通过机械加速器提高燃烧速率的方法

    公开(公告)号：US4812179A

    公开(公告)日：1989-03-14

    申请号：US654078

    申请日：1984-09-10

    申请人： David C. Sayles

    发明人： David C. Sayles

    IPC分类号： C06B33/08 ,  C06B45/00 ,  C06B45/10

    CPC分类号： C06B45/00 ,  C06B33/08

    摘要： The mechanical burning rate accelerators, e.g., graphite linters or alumi whiskers, which are employed to enhance the burning rate of solid propellants are modified by depositing specks of metal selected from the group of metals consisting of iron, vanadium, or palladium on the graphite linters or aluminum whiskers. An increase in burning rate of the propellant composition is achieved when the modified mechanical burning rate accelerators in an approximately equal percentage by weight is substituted for the unmodified graphite linters or aluminum whiskers in the propellant composition. During the propellant burning the specks of metal generate localized hot spots of heat which is graphite linters or aluminum whiskers conduct into the propellant and thereby produces the increase in burning rate. The propellant with which the modified mechanical burning rate accelerators is evaluated comprised nitrocellulose, nitroglycerine, carboranylmethyl propionate, stabilizers, ammonium perchlorate, aluminum casting powder portion, and the modified mechanical burning rate accelerators in a major portion of nitroglycerine, a minor portion of a stabilizer, and a minor portion of a plasticizer in a casting solvent portion.

    摘要翻译： 用于提高固体推进剂燃烧速率的机械燃烧速率促进剂，例如石墨填料或铝晶须，通过在石墨填料上沉积选自铁，钒或钯的金属组中的金属， 或铝晶须。 当改进的机械燃烧速率促进剂以大致相等的重量百分比替代推进剂组合物中的未改性石墨短绒或铝晶须时，可以实现推进剂组合物的燃烧速率的增加。 在推进剂燃烧期间，金属斑点产生局部热的热点，其是石墨短绒或铝晶须导入推进剂，从而产生燃烧速率的增加。 评估改性的机械燃烧速率促进剂的推进剂包括硝化纤维素，硝化甘油，丙酸碳硼烷基甲酯，稳定剂，高氯酸铵，铝铸造粉末部分和硝酸甘油主要部分中的改性机械燃烧速率促进剂，少部分稳定剂 ，和在浇铸溶剂部分中的少量增塑剂。

    Random orientation of staple in slurry-cast propellants
    37.
    发明授权
    Random orientation of staple in slurry-cast propellants 失效
    浆料推进剂中固化剂的随机取向

    公开(公告)号：US3813458A

    公开(公告)日：1974-05-28

    申请号：US73693068

    申请日：1968-06-05

    申请人： HERCULES INC

    发明人： SIMMONS R

    IPC分类号： C06B21/00 ,  C06B33/08 ,  C06B45/00 ,  C06B21/02

    CPC分类号： C06B33/08 ,  C06B21/0058 ,  C06B45/00

    摘要： A METHOD FOR RANDOMLY ORIENTING METALLIC STAPLE IN SOLID PROPELLANTS PREPARED BY SLURRY CASTING IS PROVIDED. THE METALLIC STAPLE IS RANDOMIZED BY CASTING POWDER GRANULES WHICH FORM A PART OF THE SLURRY. THE CASTING POWDER GRANULES ARE ADDED IN A SUFFICIENT QUANTITY TO FORM INTERSTICES BETWEEN THE CASTING POWDER GRANULES. THE STAPLE IS TRAPPED IN THESE INTERSTICS DURING MIXING AND THEREBY RANDOMLY ORIENTED.

    Extremely slow pyrotechnic strobe composition with reduced toxicity
    39.
    发明授权
    Extremely slow pyrotechnic strobe composition with reduced toxicity 有权

    公开(公告)号：US10207959B1

    公开(公告)日：2019-02-19

    申请号：US14645656

    申请日：2015-03-12

    申请人： U.S. Army Edgewood Chemical and Biological Command

    发明人： Amee W LaBonte ,  Michael F. Kauzlarich

    IPC分类号： C06B33/08

    摘要： A reduced toxicity pyrotechnic strobe composition and method includes creating a mixture of strontium nitrate, magnalium, sulfur, and no more than 10 parts by weight of a nitrocellulose binder. The strontium nitrate may comprise 27 percent of the mixture. The magnalium may comprise a 50:50 blend of magnesium and aluminum. The magnalium may comprise 18 percent of the mixture. The sulfur may comprise 55 percent of the mixture. The mixture may include a pulse rate of approximately one pulse per minute. The method may further include modifying the pulse rate of the mixture. The method may further include using a reduced particle size of the magnalium. The method may further include substituting no more than 12.5% of the strontium nitrate with potassium nitrate.