高压物理学报2026，Vol.40Issue(5)：55-74,20.DOI:10.11858/gywlxb.20251273
压装工艺对PBX微细观结构和力学性能的影响
Influence of Pressing Technique Parameters on Microstructures and Mechanical Properties of Polymer Bonded Energetic Materials
摘要
Abstract
Powder compaction is the most widely used technology to fabricate polymer bonded explosives(PBX),and its parameters significantly influence the structures and mechanical properties of the final products.By conducting characterizations and experiments,this work performs a systematical study on the effects of compaction parameters.Cylindrical PBX samples are prepared with distinct fabrication parameters,including pressing rate,porosity factor,temperature and granular composition.Their initial micro-structures are obtained by scanning electron microscopy(SEM)and computer tomography(CT).The samples are tested with uniaxial compression experiments under strain rates varying from 0.000 3 s-1 to 7 000 s-1 to obtain the stress-strain responses.A rate-dependent nonlinear constitutive response model is established based on ZWT constitutive model,describing the mechanical response of the PBX samples.The recycled samples subjected to quasi-static compression are examined via SEM,and the deformation/damage mechanisms are revealed(intra-granular/inter-granular fractures and interfacial debonding).This work reveals the relations between the preparation parameters,material micro-structures and compressive properties.It provides abundant data of micro-structural characteristics and mechanical properties and proposes an efficient non-linear constitutive model for the PBX.The investigation is valuable for fabrication optimization and mechanical performance assessment of PBX.关键词
高聚物黏结炸药/压缩力学性能/制备工艺参数/计算机断层扫描/变形/损伤机制/ZWT本构模型Key words
polymer bonded explosives/compressive mechanical properties/preparation parameters/computed tomography/deformation/damage mechanisms/ZWT constitutive model分类
数理科学引用本文复制引用
陈良柱,华浚亦,蔡洋..压装工艺对PBX微细观结构和力学性能的影响[J].高压物理学报,2026,40(5):55-74,20.基金项目
挑战专题(TZ2025001) （TZ2025001）
