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含能材料  2015 

纳米ε-CL-20/Estane制备与表征

DOI: 10.11943/j.issn.1006-9941.2015.11.009

Keywords: ε-CL-20/Estane 机械感度 悬浮喷雾法 热安定性

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Abstract:

为了控制六硝基六氮杂异伍兹烷(CL-20)晶型及降低机械感度, 以聚氨基甲酸乙酯弹性纤维(Estane)为包覆剂, 采用悬浮喷雾法制备了纳米ε-CL-20/Estane粒子。借助扫描电子显微镜(SEM)、激光粒度分析仪、透射电子显微镜(TEM)、X-射线衍射仪(XRD)、差示扫描量热法(DSC)和撞击感度测试表征了样品的粒子形貌、粒径、晶型、热安定性和撞击感度。结果表明, Estane可以成功地包覆在CL-20表面, 所得颗粒为椭球形或球形, 中值粒径为456.3 nm。包覆后晶型仍为ε型。原料CL-20、水悬浮工艺包覆和悬浮喷雾工艺包覆的ε-CL-20/Estane的热爆炸临界温度分别为224.52, 228.65 ℃和229.87 ℃。和水悬浮法工艺相比, 悬浮喷雾法制备的ε-CL-20/Estane的撞击感度降低, 特性落高由35.80 cm提高到41.30 cm

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