GAP/PET/RDX基推进剂的动态冲击及点火响应行为  

Study on Dynamic Impact and Ignition Response Behavior of GAP/PET/RDX Based Propellant

作　　者：范颖楠 武毅 文俊杰 王昱 杨争辉 吴迎春[2] 李海涛 侯晓 FAN Ying-nan;WU Yi;WEN Jun-jie;WANG Yu;YANG Zheng-hui;WU Ying-chun;LI Hai-tao;HOU Xiao(School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China;Hubei Institute of Aerospace Chemical Technology,Xiangyang Hubei 441003,China)

机构地区：[1]北京理工大学宇航学院,北京100081 [2]浙江大学能源清洁利用国家重点实验室,浙江杭州310027 [3]湖北航天化学技术研究所,湖北襄阳441003

出　　处：《火炸药学报》2023年第4期335-344,共10页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金(No.51906016)。

摘　　要：针对含不同粒度环三亚甲基三硝胺(RDX)的叠氮缩水甘油醚(GAP)推进剂和聚对苯二甲酸乙二醇酯(PET)推进剂,利用分离式霍普金森压杆装置开展高应变率(1000~6000s^(-1))动态冲击实验,同时结合高速摄影和数字全息光学测量技术,采用3台高速摄像机同步观测推进剂在撞击条件下损伤演化、点火响应和能量增长过程。结果表明,GAP基推进剂在高应变率压缩下的强度极限较PET基推进剂最大提升了一倍,弹性模量在不同应变率下均提升了一倍以上;中等粒度RDX较粗粒度RDX推进剂的强度极限最大提升了80%,弹性模量最大提升了148%;此外,GAP基推进剂较PET基推进剂、粗粒度较中粒度推进剂在高应变率压缩条件下更易点火,但中粒度推进剂的燃烧反应较粗粒度更加剧烈和完全。For glycidyl azide polymer(GAP)propellant and polyethylene terephthalate(PET)propellant with different cyclotrimethylenetrinitramine(RDX)particle size,a split Hopkinson pressure bar(SHPB)apparatus was used to carry out high-strain rate(1000—6000s^(-1))dynamic impact experiments,combining the optical measurement technology of high-speed photography with digital holography,three high-speed cameras were simultaneous used to synchronously observe the generation of damage,ignition response and energy growth process of various propellants under impact conditions.It was found that the ultimate strength of GAP-based propellant under high-strain rate compression is twice that of PET-based propellant,and the elastic modulus is more than doubled at different strain rates.Compared with coarse-grained RDX propellant,the ultimate strength of medium-grained RDX propellant is increased by 80%,and the elastic modulus is increased by 148%.In addition,compared with PET-based propellant and medium RDX particle size propellant,GAP-based propellant and coarse RDX particle size propellant are easier to ignite and burn under high-strain rate compression conditions.However,the reaction of medium RDX particle size propellant is more intense and complete.

关 键 词：材料力学 高能推进剂 RDX粒度 GAP基推进剂 PET基推进剂 动态力学性能 低速撞击 点火响应行为 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512[航空宇航科学与技术—航空宇航推进理论与工程]