火工品INITIATORS&PYROTECHNICS文章编号:1003-1480(2023)01-0063-06HTPE推进剂机械刺激下的安全性研究李扬1,徐森1,2,马腾1,徐飞扬1,刘静平2,白大宇1(1.南京理工大学化学与化工学院,江苏南京,210094;2.国家民用爆破器材质量监督检测中心,江苏南京,210094)摘要:为研究HTPE推进剂在机械刺激下的安全性,采用BAM撞击感度仪和摩擦感度仪测试了其临界撞击能量和临界摩擦力,参考北约STANAG4496标准对其进行破片撞击试验,测试其在不同破片撞击速度、不同破片撞击角度下的响应等级。结果表明:该HTPE推进剂的临界撞击能量为7J,其在撞击刺激下的安全性高于常规丁羟推进剂,临界摩擦力为54N,对摩擦刺激敏感;撞击角度90°时,破片速度增大(2100~2300m/s),HTPE推进剂响应等级均为V类(燃烧);破片速度为1850m/s、撞击角度60°时,HTPE推进剂响应等级为Ⅲ类(爆炸);撞击角度由90°转为60°时,HTPE推进剂受到的摩擦作用增强,响应等级由燃烧转为爆炸,其破片撞击安全性下降。关键词:HTPE推进剂;临界撞击能量;临界摩擦力;破片速度;撞击角度;响应等级中图分类号:TJ410.3文献标识码:ADOI:10.3969/j.issn.1003-1480.2023.01.013StudyonSafetyofHTPEPropellantunderMechanicalStimulationLIYang1,XUSen1,2,MATeng1,XUFei-yang1,LIUJing-ping2,BAIDa-yu1(1.SchoolofChemistryandChemicalEngineering,NanjingUniversityofScienceandTechnology,Nanjing,210094;2.NationalQualitySupervisionTestingCenterforIndustrialExplosiveMaterials,Nanjing,210094)Abstract:InordertostudythesafetyofHTPEpropellantundermechanicalstimulation,theBAMimpactsensitivityinstrumentandtheBAMfrictionsensitivityinstrumentwereusedtotestitscriticalimpactenergyandcriticalfriction.AccordingtoNATOSTANAG4496standard,fragmentimpacttestswerecarriedouttotestitsresponsegradeunderdifferentfragmentimpactspeedsanddifferentfragmentimpactangles.TheresultsshowthatthecriticalimpactenergyofHTPEpropellantis7J,andthesafetyofHTPEpropellantunderimpactstimulationishigherthanthatofthecommonbutylatedpropellant.Itscriticalfrictionis54N,HTPEpropellantissensitivetofrictionstimulation.Whentheimpactangleis90°,asthefragmentvelocityincreasingfrom2100m/sto2300m/s,bothofwhichresponsegradeareclassifiedasclassV(combus...