Rheological and printability evaluation of melt-cast explosives for fused deposition modeling (FDM) 3D printing
Huzeng Zong,
Hao Ren,
Xiang Ke,
Suwei Wang,
Gazi Hao,
Yubing Hu,
Guangpu Zhang,
Lei Xiao,
Wei Jiang
Affiliations
Huzeng Zong
National Special Superfine Powder Engineering Technology Research Center, Nanjing University of Science and Technology, Nanjing, China
Hao Ren
National Special Superfine Powder Engineering Technology Research Center, Nanjing University of Science and Technology, Nanjing, China
Xiang Ke
School of Chemistry and Material Engineering, Anhui Science and Technology University, Bengbu, China
Suwei Wang
National Special Superfine Powder Engineering Technology Research Center, Nanjing University of Science and Technology, Nanjing, China
Gazi Hao
National Special Superfine Powder Engineering Technology Research Center, Nanjing University of Science and Technology, Nanjing, China
Yubing Hu
National Special Superfine Powder Engineering Technology Research Center, Nanjing University of Science and Technology, Nanjing, China
Guangpu Zhang
National Special Superfine Powder Engineering Technology Research Center, Nanjing University of Science and Technology, Nanjing, China
Lei Xiao
National Special Superfine Powder Engineering Technology Research Center, Nanjing University of Science and Technology, Nanjing, China; Corresponding authors.
Wei Jiang
National Special Superfine Powder Engineering Technology Research Center, Nanjing University of Science and Technology, Nanjing, China; Corresponding authors.
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.
