Explosively driven low-density foams and powders
    25.
    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

    CPC classification number: C06B33/08 C06B45/00 C06B45/14

    Abstract: 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.

    Abstract translation: 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。

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