【摘要】 为了解决“双迫”型废火药的处理和再利用问题,提出了一种制备射钉弹用球扁型发射药的新工艺。工艺过程包括:将经过粉碎的原料药粒分散到含有分散剂的水溶液中,加入适量的乙酸乙酯溶剂使药粒表层溶胀,在搅拌剪切力和界面张力的作用下,药粒的表面发生球形化转变,再经过洗涤、分级和烘干等处理,得到表面光滑的球扁药。研究得到的适宜工艺条件为:溶剂比1.0~2.0ml.g-1,用水量为药粒的6.0倍,分散剂用量为水量的1.0%~2.0%,搅拌速率500~600r.min-1(线速度4.0~5.0m.s-1),溶胀温度和时间分别为65~68℃和30min。成品球扁药的堆积密度由0.70g.cm-3提高到0.95g.cm-3以上,流出时间由7.5s下降到4.0s以下。在射钉枪上进行测试,其主要弹道性能达到PATMI标准的规定指标。更多还原

【Abstract】 A new manufacturing technique is proposed for transferring the waste double-base mortar propellant into oblate spherical propellant used in powder loads. The transferring process comprises grinding waste propellant, dispersing in water, swelling of grinded waste propellant powder in solvent, stirring for spheroidization, washing oblate propellant, screening and drying, obtaining the polished surface of the oblate propellant. The suitable process conditions are: ratio of solvent volume to propellant powder quality （1.0）².0 ml·g^-1, ratio of water volume to propellant powder quality 6.0, consistence of dispersant in water 1.0 wt%^{2.0 wt%}, stirring speed 500⁶00 r·min^-1(linear velocity 4.0⁵.0 m·s^-1), swelling temperature and time 65⁶8 ℃ and （30 min） respectively. Thus, the bulk density of the oblate spherical propellant increased from 0.70 g·cm^-3 to 0.95 g·cm^-3 （the crude propellant is）, the flowing time of the propellant decreased from 7.5 s to 4.0 s. Experimental results show that the ballistic performance of the propellant meets the requests of American Standard PATMI.更多还原