CAJ | 학술논문

为提高含纳米 Al 固体推进剂和 PBX 炸药的安全性，利用 DSC、SEM、机械感度、火焰感度等测试方法，探讨了混合方法、混合比例、包覆改性等因素对纳米 Al／RDX 混合物安全性能的影响。结果表明，与筛分混合法相比，通过溶液法混合，纳米 Al 能均匀分散于 RDX 表面，使纳米 Al／RDX 的热分解活化能和热爆炸临界温度分别增加8．7％和4．5％，热安定性也提高；随着纳米 Al 含量的增加，纳米 Al／RDX 混合物的摩擦感度和撞击感度均减小，而溶液混合法所得样品的撞击感度明显高于筛混法；采用氟橡胶、炭黑 B 包覆纳米 Al 后混合物的撞击感度降低到包覆前的18．4％。
위제고함납미 Al 고체추진제화 PBX 작약적안전성，이용 DSC、SEM、궤계감도、화염감도등측시방법，탐토료혼합방법、혼합비례、포복개성등인소대납미 Al／RDX 혼합물안전성능적영향。결과표명，여사분혼합법상비，통과용액법혼합，납미 Al 능균균분산우 RDX 표면，사납미 Al／RDX 적열분해활화능화열폭작림계온도분별증가8．7％화4．5％，열안정성야제고；수착납미 Al 함량적증가，납미 Al／RDX 혼합물적마찰감도화당격감도균감소，이용액혼합법소득양품적당격감도명현고우사혼법；채용불상효、탄흑 B 포복납미 Al 후혼합물적당격감도강저도포복전적18．4％。
To improve the safety of solid propellants and PBX explosives with nano-aluminum,the effects of mixing methods,mixing ratio and coating modification on the safety performance of mixtures were studied by DSC,SEM, mechanical sensitivity and flame sensitivity etc test methods.Results show that compared to sieve mixing method, through mixing the solution,nano-Al powder can be uniformly dispersed on the surface of RDX powder,making the activation energy of thermal decomposition and critical temperature of thermal explosion of nano-Al/RDX increase by 8.7% and 4.5%,respectively,and the thermal stability is also improved.With the increase of nano-Al content in mixtures,the friction sensitivity and impact sensitivity of nano-Al/RDX mixture decrease,but the impact sensitivity of solution mixed samples is significantly higher than that of sieve mixing method.Coated by fluorine rubber or a kind of carbon black B,the impact sensitivity of mixtures can significantly reduce to 18.4% of that before being coated.