Method of preparing a non-feathering nitramine propellant
    1.
    发明授权
    Method of preparing a non-feathering nitramine propellant 失效
    制备非羽化硝胺推进剂的方法

    公开(公告)号:US4726919A

    公开(公告)日:1988-02-23

    申请号:US748922

    申请日:1985-06-26

    IPC分类号: C06B21/00 C06B25/34 C06B45/10

    摘要: A low vulnerability ammunition (LOVA) propellant is prepared with a polyurethane binder and a mixture of nitramines consisting essentially of RDX and at least 7.5 wt. % HMX (based on combined oxidizer binder matrix weight). Dilution of RDX with HMX enhances precure extrudability of the propellant grain. Polymerization and extrudability is provided without slumping prior to total cure given a NCO:DIOL:TRIOL equivalent ratio of from about 110:15:85.

    摘要翻译: 使用聚氨酯粘合剂和基本上由RDX和至少7.5重量%组成的硝基胺混合物制备低脆弱性弹药(LOVA)推进剂。 %HMX(基于组合的氧化剂粘合剂基质重量)。 用HMX稀释RDX可增强推进剂颗粒的预先挤出能力。 提供聚合和可挤出性,而在全部固化之前,如果NCO:DIOL:TRIOL当量比为约110:15:85,则不会塌陷。

    Solvent-free preparation of gun propellant formulations
    2.
    发明授权
    Solvent-free preparation of gun propellant formulations 失效
    枪式推进剂配方的无溶剂制备

    公开(公告)号:US4650617A

    公开(公告)日:1987-03-17

    申请号:US748889

    申请日:1985-06-26

    IPC分类号: C06B21/00 C06B45/10

    CPC分类号: C06B21/0025 C06B45/10

    摘要: A solventless method for the preparation and storage of uncured low vulnerability ammunition propellant (LOVA) includes blending from about 60 to 80 weight percent of either HMX or RDX oxidizer having a weight mean diameter from 1.0 to 14 microns with a polyurethane binder. A cure effecting amount of cure catalyst may also be included. These ingredients are blended at a temperature below about 110.degree. F., deaired, and optionally stored at low temperatures at a pre-cured condition, extruded and subsequently cured. The products produced thereby have uniquely low burning rates as well as uniquely low burning rate exponents.

    摘要翻译: 用于制备和储存未固化的低脆弱性弹药推进剂(LOVA)的无溶剂方法包括将约60至80重量%的重量平均直径为1.0至14微米的HMX或RDX氧化剂与聚氨酯粘合剂混合固化效果量 的固化催化剂也可以包括在内。 将这些成分在低于约110°F的温度下混合,并且在预固化条件下任选地在低温下保存,挤出并随后固化。 由此产生的产品具有独特的低燃烧率以及独特的低燃烧率指数。

    Low vulnerability gun propellant
    3.
    发明授权
    Low vulnerability gun propellant 失效
    低漏枪推射剂

    公开(公告)号:US4506069A

    公开(公告)日:1985-03-19

    申请号:US564972

    申请日:1983-12-21

    摘要: A prepolymer for use in preparing a binder for low vulnerability gun propellants. The condensation of an alkynediol and formaldehyde produces a prepolymer which is cured with a polyisocyanate. The resulting binder can be combined with 1,3,5,7-tetramethylenetetranitramine (HMX) or 1,3,5-trimethylenetrinitramine (RDX), and is readily extruded as multi-perforated propellant grains, the extruded material having a greatly reduced tendency to slumping, and an enhanced mass impetus value.

    摘要翻译: 用于制备低危型枪式推进剂的粘合剂的预聚物。 炔二醇和甲醛的缩合产生用多异氰酸酯固化的预聚物。 所得到的粘合剂可以与1,3,5,7-四亚甲基四胺(HMX)或1,3,5-三亚甲基三胺(RDX)组合,并且容易地作为多孔推进剂颗粒挤出,挤出的材料具有大大降低的倾向 坍塌,增加质量推动力。

    Low vulnerability gun propellant
    4.
    发明授权
    Low vulnerability gun propellant 失效
    低漏枪推射剂

    公开(公告)号:US4456493A

    公开(公告)日:1984-06-26

    申请号:US484001

    申请日:1983-04-11

    IPC分类号: C06B21/00 C06B45/10 C08G18/67

    摘要: A prepolymer for use in preparing a binder for low vulnerability gun propellants. The condensation of an alkynediol and formaldehyde produces a prepolymer which is cured with a polyisocyanate. The resulting binder can be combined with 1,3,5,7-tetramethylenetetranitramine (HMX) or 1,3,5-trimethylenetrinitramine (RDX), and is readily extruded as multi-perforated propellant grains, the extruded material having a greatly reduced tendency to slumping, and an enhanced mass impetus value.

    摘要翻译: 用于制备低危型枪式推进剂的粘合剂的预聚物。 炔二醇和甲醛的缩合产生用多异氰酸酯固化的预聚物。 所得到的粘合剂可以与1,3,5,7-四亚甲基四胺(HMX)或1,3,5-三亚甲基三胺(RDX)组合,并且容易地作为多孔推进剂颗粒挤出,挤出的材料具有大大降低的倾向 坍塌,增加质量推动力。