TY - JOUR
T1 - Fabrication of microspherical Hexanitrostilbene (HNS) with droplet microfluidic technology
AU - Han, Ruishan
AU - Chen, Jianhua
AU - Zhang, Fang
AU - Wang, Yanlan
AU - Zhang, Lei
AU - Lu, Feipeng
AU - Wang, Haifu
AU - Chu, Enyi
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/2
Y1 - 2021/2
N2 - Spherical explosives had regular shape and smooth surface, which gave them low sensitivity, excellent flowability, and high bulk density, thereby yield good charging performance. Traditional spherization methods always resulted in irregular shape, low sphericity, and uneven size. In this paper, a novel droplet microfluidic technology was used to fabricate hexanitrostilbene (HNS) microspherical with nitrocellulose (NC) as adhesive. The farication process (e. g., HNS concentration, NC concentration, flow rate) was fully investigated in pursuing for the ideal farication condition. The chemical structures, crystalline structures, and thermal stability of HNS were preserved. Meanwhile, the flowability and bulk density of HNS microspheres were significantly improved (Repose angle: HNS microsphere vs raw HNS, 33.1 vs 39.2°; bulk density: HNS microsphere vs raw HNS, 0.466 vs 0.301 g cm−3), which enhanced the charging and pressing performance of HNS.
AB - Spherical explosives had regular shape and smooth surface, which gave them low sensitivity, excellent flowability, and high bulk density, thereby yield good charging performance. Traditional spherization methods always resulted in irregular shape, low sphericity, and uneven size. In this paper, a novel droplet microfluidic technology was used to fabricate hexanitrostilbene (HNS) microspherical with nitrocellulose (NC) as adhesive. The farication process (e. g., HNS concentration, NC concentration, flow rate) was fully investigated in pursuing for the ideal farication condition. The chemical structures, crystalline structures, and thermal stability of HNS were preserved. Meanwhile, the flowability and bulk density of HNS microspheres were significantly improved (Repose angle: HNS microsphere vs raw HNS, 33.1 vs 39.2°; bulk density: HNS microsphere vs raw HNS, 0.466 vs 0.301 g cm−3), which enhanced the charging and pressing performance of HNS.
KW - Energetic materials
KW - Microfluidics
KW - Microsphere
KW - Powder technology
UR - http://www.scopus.com/inward/record.url?scp=85097883000&partnerID=8YFLogxK
U2 - 10.1016/j.powtec.2020.10.056
DO - 10.1016/j.powtec.2020.10.056
M3 - Article
AN - SCOPUS:85097883000
SN - 0032-5910
VL - 379
SP - 184
EP - 190
JO - Powder Technology
JF - Powder Technology
ER -