GAP-ETPE基高能固体推进剂的蠕变性能  

Creep Properties of GAP-ETPE-based High-energy Solid Propellant

作　　者：刘双 张锡铭[1,2] 张京 郑梦泽 刘文皓 罗运军 LIU Shuang;ZHANG Xi-ming;ZHANG Jing;ZHENG Meng-ze;LIU Wen-hao;LUO Yun-jun(School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China;Key Laboratory for Ministry of Education of High Energy Density Materials,Beijing 100081,China)

机构地区：[1]北京理工大学材料学院,北京100081 [2]高能量密度材料教育部重点实验室,北京100081

出　　处：《火炸药学报》2022年第6期877-883,共7页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金(No.22175024);爆炸科学与技术国家重点实验室资助项目(No.YBKT22-08)。

摘　　要：为研究GAP-ETPE基固体推进剂的蠕变性能,通过压延工艺制备了GAP-ETPE/Al/RDX/AP/GAPA高能固体推进剂,分析了加载应力、环境温度对推进剂蠕变性质的影响;使用Matlab软件对GAP-ETPE基推进剂在不同加载应力、不同环境温度下的数据进行拟合,对其长期蠕变行为进行预测。结果表明,推进剂的蠕变应变、残余应变随加载应力和温度的增加而增大,室温及1.4MPa加载应力下蠕变应变为4.9%;56℃及0.5MPa加载应力下蠕变应变为4.0%;恒定蠕变速率随加载应力增加显著增大,但是在加工温度附近出现了极值点;对比发现GAP-ETPE基推进剂的抗蠕变性能优于常见的热固性推进剂;广义的Kelvin模型对各组蠕变数据的拟合程度达到0.995以上,能够很好地描述GAP-ETPE基推进剂的蠕变行为;建立的蠕变柔量主曲线将考察时间扩展到108.1s,可用于GAP-ETPE基推进剂蠕变性能的长期预测及实际应用。In order to study the creep properties of GAP-ETPE-based solid propellant,GAP-ETPE/Al/RDX/AP/GAPA high-energy solid propellants were prepared by calendering process,and the influence factors of loading stress and ambient temperature on the creep properties of propellants were analyzed.Matlab software was used to fit the data of GAP-ETPE-based propellant under different loading stresses and ambient temperatures.The long-term creep behavior was predicted.The results show that the creep strain and residual strain of propellant increase with the increase of loading stress and temperature,and the creep strain is 4.9%under 1.4 MPa loading stress at room temperature.The creep strain is 4.0%under loading stress of 0.5 MPa at 56℃.The constant creep rate increases significantly with the increase of loading stress,but an extreme point appears near the processing temperature.It is found that the creep resistance of GAP-ETPE-based propellant is better than that of thermosetting propellant.The generalized Kelvin model can fit the creep data of each group more than 0.995,which can describe the creep behavior of GAP-ETPE-based propellant very well.The creep compliance master curve extends the investigation time to 108.1s,which can be used for long-term creep performance prediction and practical application of GAP-ETPE-based propellants.

关 键 词：物理化学 GAP-ETPE基固体推进剂 拉伸蠕变 蠕变性能 广义Kelvin模型 蠕变柔量主曲线 

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]