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含能材料  2011 

超临界RESS法包覆超细RDX工艺

DOI: 10.3969/j.issn.1006-9941.2011.02.006

Keywords: 材料科学,超临界RESS法,复合含能材料,撞击感度

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Abstract:

采用超临界流体RESS法对超细黑索今(RDX)进行了包覆,研究了不同系统温度、溶液浓度、系统压力对包覆后超细RDX造型粉效果的影响,并对其进行撞击感度测试。结果表明,系统温度45℃以上,造型粉颗粒之间氟橡胶粘结在一起,分散性较差;氟橡胶浓度0.4g/mL以上,其造型粉颗粒尺寸增大;系统压力降低到12MPa以下,颗粒表面未完全被氟橡胶包覆,且分散性也较差。当系统温度40℃、氟橡胶浓度0.3g/mL、系统压力14MPa、通气时间20min条件下,包覆效果最好。包覆后样品撞击感度特性落高比超细RDX(25.2cm)提高了9.48cm。

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