3D printing of RDX-based aluminized high explosives with gradient structure, significantly altering the critical dimensions

Abstract

The vulnerability of weapon and ammunition has been attracting more and more researcher’s attention in order to improve their system survival in battlefield and security of production, transport and service management, and to adapt to the harsh battlefield environment. One of potential directions of explosive research and development is to reduce its vulnerability through charging structures. RDX-based high aluminized gradient structures explosives are constructed via direct ink writing. SEM and DSC demonstrated good compatibility of the gradient explosives and no significant gaps at the interface of the filaments, which leads to good thermal stability and suppressed hot spot formation within the gradient explosive. The critical dimension of detonation indicates that the critical size of explosive with gradient structure is greatly increased. This attractive integration of structural and functional advantages achieved by 3D printing gradient structure process offers new insights into the design of robust munitions.

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Acknowledgements

This work was supported and funded by Longshan Academic Talent Research Support Program of SWUST China, the Natural Science Foundation of China (No. 17LZX509, No. 18LZX684, No. 11602239, and 11872341), National Training Program of Innovation and Entrepreneurship for Undergraduates (No. S201910619027). The authors also thank the continuous support from Pine Ridge Laboratory of Advanced Materials, Sichuan Easy Scientific Research Community Technology Co., Ltd., Mianyang 621050 China.

Funding

This study was funded by any institute Natural Science Foundation of China (No. 17LZX509, No. 18LZX684, No. 11602239, and 11872341), National Training Program of Innovation and Entrepreneurship for Undergraduates (No. S201910619027).

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Correspondence to Dunju Wang.

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Zhou, X., Mao, Y., Zheng, D. et al. 3D printing of RDX-based aluminized high explosives with gradient structure, significantly altering the critical dimensions. J Mater Sci 56, 9171–9182 (2021). https://doi.org/10.1007/s10853-021-05869-3

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