高压物理学报2026，Vol.40Issue(5)：84-93,10.DOI:10.11858/gywlxb.20251175
含胶低密度炸药的爆轰性能及状态方程研究
Detonation Performance and Equation of State of Low Density Explosive Mixed by PBX-9502 Powder and 502 Glue
摘要
Abstract
This study focuses on the detonation performance and equation of state(EOS)of a low-density composite explosive mixed in a certain proportion of PBX-9502 powder and 502 glue.The theoretical analysis method was used based on the BKW program.The main work includes calculating the heat of formation of Kel-F(PBX-9502 binder)and ethyl cyanoacrylate(main component of 502 glue)using the group contribution method,determining the standard entropy temperature coefficient and excess volume of 18 product gases containing F and Cl elements.Within the BKW program framework,the CJ detonation velocity and pressure were determined for five mixing ratios and four density states.The corresponding JWL equation of state parameters are fitted based on the calculated CJ isentropic line.The results show that the detonation velocity and pressure are positively correlated with initial density,but negatively correlated with the content of 502 glue.The relevant results provide a theoretical basis for the selection of 502 glue ratio and mixed charge density in practical applications.The obtained JWL EOS parameters can also be used by general detonation calculation software to evaluate the detonation performance of devices.The relevant method can also be directly extended to the study of detonation parameters of other formulated explosives(sulfur,aluminum),which has important engineering application value.关键词
混合炸药/BKW/爆轰参数/JWL状态方程Key words
composite explosive/BKW/detonation parameter/JWL equation of state分类
数理科学引用本文复制引用
刘坤,唐久棚,王强..含胶低密度炸药的爆轰性能及状态方程研究[J].高压物理学报,2026,40(5):84-93,10.基金项目
冲击波物理与爆轰物理全国重点实验室基金(2023JCJQLB05407) （2023JCJQLB05407）
