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1、第29卷第2期火炸药学报2006年4月ChineseJournalofExplosives&Propellants41HTPB/AP/Al复合推进剂燃速降速剂研究冉秀伦,杨荣杰(北京理工大学材料科学与工程学院,北京100081)摘要:通过测定5.1MPa压强下HTPB/AP/Al复合推进剂药条静态燃速和BSF75mm、BSF165mm标准发动机实验,研究了(NH4)2C2O4,LiF,CaCO3,SrCO3及季铵盐等燃速调节剂对推进剂燃烧性能、能量性能等的影响。结果表明,季铵盐降速效率最高,季铵盐与碳酸盐组合使用可使
2、固体质量分数为87%的推进剂在5.1MPa压强下的静态燃速降至3mm/s左右。BSF75mm发动机测试表明,含季铵盐与碳酸盐组合降速剂的推进剂配方在3.45～12.17MPa压强范围内的压强指数为0.2,达到了平台推进剂水平,密度比冲较相近燃速的含草酸铵推进剂高2.8%,且内弹道曲线更稳定。关键词:燃烧化学;固体推进剂;燃烧性能;燃速调节剂;季铵盐中图分类号:TJ55;V512文献标识码:A文章编号:1007-7812(2006)02-0041-03StudyonBurningRateInhibitorsofHTPB
3、/AP/AlPropellantsRANXiu-lun,YANGRong-jie(CollegeofMaterialsScienceandEngineering,BeijingInstituteofTechnology,Beijing100081,China)Abstract:Theeffectofammoniumoxalate,lithiumfluoride,calciumcarbonate,strontiumcarbonate,quaternaryammniumsaltandetc.asburningratein
4、hibitorsonburningrateofHTPB/AP/Alpropellanthavebeeninvestigated.Considerabledecreaseinburningratehasbeenobservedwhenquaternaryammoniumsaltcompositewithcarbonateorlithiumfluorideareusedasdepressant,andabove-mentionedcompositeinhibitorshaveexcellenteffectondecrea
5、singtheburningrateofpropellants.InHTPB/AP/Alpropellants,thequaternaryammoniumsaltscompositewithcarbonatesaremorepronouncedondecreasingburnratethanammoniumoxalateinhibitorwhichisnowusedformanypracticallowburningratepropellant.ThefiringtestsofBSF75mmmotorsindicat
6、ethatquaternaryammoniumsaltcompositewithcarbonatealsocoulddecreasethepressureexponentofthepropellantfrom0.33to0.20inthepressurerangeof3.45～12.17MPa.ThefiringtestofBSF165mmmotorsloadedwithHTPB/AP/Alpropellantgraincontainingquaternaryammoniumsaltandcarbonateasinh
7、ibitorgivesmorestablechamberpressure-timeandthrust-timehistoriesthanthatcontainingammoniumoxalate,andtheresultsshowthatthedensity-specificimpulseofobtainedformulationis2.8%higherthanthatcontainingammoniumoxalatewiththesameburningrate.Keywords:combustionchemistr
8、y;solidpropellant;combustionproperty;burningrateinhibitor;quaternaryammoniumsalt(NH4)2SiF6、(NH4)2HPO4等,这些化合物可以很容引言易生成出NH3;(2)添加可以与HClO4起反应的物质,且生成比HClO4或AP具有更高稳定性的化合关于降低HTPB/
