火炸药学报2025，Vol.48Issue(6)：561-567,7.DOI:10.14077/j.issn.1007-7812.202502007
硝基胍对NEPE推进剂燃烧性能的影响
Effect of Nitroguanidine on the Combustion Performance of NEPE Propellant
摘要
Abstract
In order to meet the urgent demand of tactical missiles for low-cost and high safety nitrate ester plasticized poly-ether(NEPE)propellants,NEPE propellants containing different mass fractions of nitroguanidine(NQ)were prepared by par-tially replacing RDX with NQ.The influence of NQ introduction on the combustion characteristics of the propellant were stud-ied.The influence of NQ on the thermal decomposition performance of propellant was tested by TGA-FTIR.Its mechanical properties and sensitivity were tested.The results indicate that the addition of NQ increased the burning rate of the propellant at low pressure and reduced the pressure index over the pressure range of 7-11 MPa significantly(such as the pressure index of propellant sample 4 is 0.13),exhibiting near platform combustion characteristics.NQ alters the thermal decomposition pathway of AP,accelerating its high-temperature decomposition and inhibiting its low-temperature decomposition.NQ and RDX exhibit significant interactions in the liquid phase,with thermal weight loss peaks advanced by 31.67℃ and 14℃,re-spectively.The introduction of NQ significantly improved the tensile strength of the propellant.When the NQ content increased from 0 to 9％,the σm increased from 0.34MPa to 0.94MPa;NQ enhances the energy dissipation through mechanisms such as fracture,resulting in a 56％reduction in impact sensitivity.Formula of sample 3 meets the performance requirements of tacti-cal weapon equipment with low pressure index,low sensitivity,and excellent mechanical properties.关键词
物理化学/NEPE推进剂/硝基胍/NQ/热分析/平台燃烧特性/燃速压力指数Key words
physical chemistry/NEPE propellant/nitroguanidine/NQ/mechanical properties/platform combustion character-istics/pressure index分类
军事科技引用本文复制引用
赵泽霖,杨威,罗雯,夏敏..硝基胍对NEPE推进剂燃烧性能的影响[J].火炸药学报,2025,48(6):561-567,7.基金项目
中央高校基本科研业务费资助(No.2021CX01002) （No.2021CX01002）
