In this paper, ultrafine CL‐20 was prepared by wet grinding procedure. The morphology, particle size, sample composition, and crystal structure of CL‐20 before and after grinding were detected by scanning electron microscope, laser granulometer, infrared Raman Spectroscopy, and X‐ray diffraction instrument. The thermal decomposition, mechanical sensitivity, shock wave sensitivity, flame sensitivity, bulk density, and rheological property of CL‐20 based explosives were tested. The results indicated that the crystal form of CL‐20 was retained as ϵ‐form after wet grinding. The ground CL‐20 was superior in physical properties to the raw CL‐20, such as smaller particle size, smooth surface, less mechanical sensitiveness, and lower flame sensitivity. However, the thermal stability was slightly decreased. Moreover, the bulk density of ground CL‐20 was higher, which leading to an increase in density of shaped charge column. The viscosity of the CL‐20 based cast explosive formulation was effectively reduced, that can improve the process of explosive formulation and the process adaptability. In addition, under high strain rate loading, the impact safety of the explosive prepared with ground CL‐20 is improved.

中文翻译：

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湿法制备超细CL-20的性能研究

在本文中，通过湿磨法制备了超细CL-20。用扫描电子显微镜，激光粒度仪，红外拉曼光谱仪和X射线衍射仪检测CL-20研磨前后的形态，粒度，样品组成和晶体结构。测试了CL-20型炸药的热分解，机械敏感性，冲击波敏感性，火焰敏感性，堆积密度和流变性质。结果表明，湿磨后CL-20的晶体形式保留为ϵ形式。研磨后的CL-20的物理性能优于原始CL-20，例如较小的粒径，光滑的表面，较低的机械敏感性和较低的火焰敏感性。但是，热稳定性略有下降。此外，地面CL-20的堆积密度较高，这导致成形装药柱的密度增加。有效降低了基于CL-20的铸造炸药配方的粘度，这可以改善炸药配方的过程和过程的适应性。此外，在高应变率载荷下，使用地面CL-20制备的炸药的冲击安全性得到改善。