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公开(公告)号：US4726919A
公开(公告)日：1988-02-23
申请号：US748922
申请日：1985-06-26
CPC分类号： C06B21/0025 , 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。
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公开(公告)号：US4650617A
公开(公告)日：1987-03-17
申请号：US748889
申请日：1985-06-26
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。
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