含能材料2026，Vol.34Issue(8)：934-941,8.DOI:10.11943/CJEM2026105
微流控制备HNS/F2604复合微球及其力学性能研究
Study on the Preparation of HNS/F2604 Composite Microspheres by Microfluidics and Mechanical Properties
摘要
Abstract
To address the problems of irregular morphology and poor mechanical properties of conventional hexanitrostilbene(HNS)crystals,HNS/F2604 microspheres were fabricated via microfluidic technology.By combining Brazilian splitting tests with fi-nite element simulations,the mechanical properties and enhancement mechanism of the as-prepared microspheres were systemat-ically investigated.The results show that HNS/F2604 microspheres with good sphericity and smooth surfaces can be obtained when the dispersed phase flow rate is 0.05 mL·min-1,the continuous phase flow rate is 2.0 mL·min-1(flow rate ratio of 1∶40),and the collection temperature is 60℃.The microspheres retain the original crystalline structure of HNS,while their peak thermal decom-position temperature is 4.6℃lower than that of pure HNS.Brazilian splitting tests indicate that the pure HNS pellet has a peak load of 0.0065 kN and exhibits brittle fracture characteristics;in contrast,the peak load of the HNS/F2604 microsphere pellet increases to 0.072 kN,and its post-peak stress-displacement curve shows multi-stage attenuation,reflecting a transition to ductile fracture.The crack propagation morphology obtained from finite element simulations is in good agreement with the experimental fracture fea-tures.The HNS/F2604 composite microspheres prepared by microfluidic technology exhibit a remarkable toughening effect.关键词
六硝基茋/微流控/力学性能/有限元仿真/巴西实验Key words
hexanitrostilbene(HNS)/microfluidics/mechanical properties/brazilian experiment/finite element simulation/bra-zilian experiment分类
军事科技引用本文复制引用
刘纪鸿,徐聪,张言,李旭涵,魏贤凤..微流控制备HNS/F2604复合微球及其力学性能研究[J].含能材料,2026,34(8):934-941,8.基金项目
国家自然科学基金(22405223) National Natural Science Foundation of China(22405223) （22405223）
