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Materials 2018, 11(7), 1130;

Synthesis, Characterization, and Sensitivity of a CL-20/PNCB Spherical Composite for Security

Sichuan Co-Innovation Center for New energetic materials, Southwest University of Science and Technology (SWUST), Mianyang 621010, China
Institute of Chemical Materials, China Academy of Engineering Physics (CAEP), Mianyang 621900, China
Author to whom correspondence should be addressed.
Received: 16 May 2018 / Revised: 14 June 2018 / Accepted: 28 June 2018 / Published: 3 July 2018
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Highly energetic materials have received significant attention, particularly 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20). However, the application of this material was limited due to its high sensitivity. It is well known that the shape, size, and structure of energetic materials (EMs) significantly influence their sensitivity. At present, there are several ways to reduce the sensitivity of CL-20, such as spheroidization, ultrafine processing, and composite technology. However, only one or two of the abovementioned methods have been reported in the literature, and the obtained sensitivity effect was unsatisfactory. Thus, we tried to further reduce the sensitivity of CL-20 by combining the above three methods. The as-prepared composite was precipitated from the interface between two solutions of water and ethyl acetate, and the composite was insensitive compared with other reported CL-20-based EMs. The H50 value for the composite ranged up to 63 cm. This approach opens new prospects for greatly reducing the sensitivity of high Ems. View Full-Text
Keywords: CL-20; PNCB; micro-scale spherical composite; ultrasound-assisted emulsion method CL-20; PNCB; micro-scale spherical composite; ultrasound-assisted emulsion method

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Zhu, Y.; Lu, Y.; Gao, B.; Wang, D.; Guo, C.; Yang, G. Synthesis, Characterization, and Sensitivity of a CL-20/PNCB Spherical Composite for Security. Materials 2018, 11, 1130.

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