Rheological and printability evaluation of melt-cast explosives for fused deposition modeling (FDM) 3D printing

FirePhysChem Pub Date : 2023-05-26 DOI:10.1016/j.fpc.2023.05.007

Huzeng Zong , Hao Ren , Xiang Ke , Suwei Wang , Gazi Hao , Yubing Hu , Guangpu Zhang , Lei Xiao , Wei Jiang

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Abstract

The rheology of melt-cast explosives is vital for the fused deposition modeling (FDM) manufacturing process. To address this problem, the rheological behavior of 2,4,6-trinitrotoluene/1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (TNT/HMX) melt-cast explosives were systematically investigated by a rotational rheometer. The results indicated that the rheological behavior of TNT/HMX melt-cast explosives was strongly influenced by the solid content and temperature. Through the printing experiment, the range of printing parameters that can be applied to fabricate desired explosive grain structures was determined. Besides, the computational fluid dynamic (CFD) and Hagan-Poiseuille formula were used to explore and quantify the printable zone of 3D printing melt-cast explosives. This work could expand the application of 3D printing technology in the field of explosives, propellants, and projectile penetration.

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熔融沉积建模 (FDM) 三维打印用熔铸炸药的流变性和可打印性评估

熔铸炸药的流变性对熔融沉积模型（FDM）制造工艺至关重要。为了解决这个问题，我们使用旋转流变仪系统地研究了 2,4,6-三硝基甲苯/1,3,5,7-四硝基-1,3,5,7-四氮杂环辛烷（TNT/HMX）熔铸炸药的流变行为。结果表明，TNT/HMX 熔铸炸药的流变行为受固体含量和温度的影响很大。通过印刷实验，确定了可用于制造所需炸药晶粒结构的印刷参数范围。此外，还利用计算流体动力学（CFD）和哈根-普绪耶公式探索并量化了三维打印熔铸炸药的可打印区域。这项工作可拓展 3D 打印技术在炸药、推进剂和弹丸穿透领域的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

FirePhysChem

CiteScore

1.40

自引率

0.00%

发文量