HMX 粒度对 HMX/F2641 冲击波起爆感度的影响研究

目的研究主体炸药 HMX 粒度对 HMX/F2641 冲击波起爆感度的影响. 方法采用小隔板试验测定不同粒度下传爆药 (HMX∶F2641 料比=95∶5) 的冲击波感度,并进行理论分析. 结果给出了不同粒度下传爆药的冲击波感度值,冲击波感度值以 50% 起爆对应的隔板值表示. 结论主体炸药粒度对传爆药的冲击波起爆感度具有显著影响. 在中等密度条件下,传爆药冲击波感度随主体炸药粒度的减小而降低,表明中等密度条件下 HMX/F2641 冲击波感度随主体炸药 HMX 粒度的减小而降低.     

关于JD－X传爆药冲击波感度的研究

ＪＤ－Ｘ是一种有高耐热性、加工安全性好的传爆药，其压药工艺性好，冲击波起爆感度适宜．本文以改进的小隔板试验为基础，讨论了主炸药粒度、粘结剂品种等对ＪＤ－Ｘ传爆药冲击感度的影响     

不同配比HMX/TATB高聚物粘结炸药的制备及表征

采用溶液-水悬浮工艺制备不同配比的TATB/HMX粘结炸药,并利用扫描电镜、XRD、DSC和撞击感度测试等方法对其进行性能表征.结果表明:当HMX含量为55%时,可以得到形貌较完好的晶体颗粒,HMX含量过高或过低都会对粘结炸药的形貌及粒度产生影响;由XRD得出,包覆前后HMX和TATB的晶型结构没有发生变化,即整个包覆工艺过程没有改变物质的晶型;由DSC分析,制备后的PBX活化能均有所提高,且当HMX含量为55%时制备的高聚物粘结炸药的热安定性有明显提高;通过撞击感度实验,3种PBX全都不发火,表明TATB对HMX有很好的降感作用.制备HMX/TATB高聚物粘结炸药的最佳配比是HMX∶Viton-A∶TATB=55∶5∶40.     

破片对屏蔽炸药的撞击起爆研究

目的　研究高速柱形破片撞击带壳Ｂ炸药的冲击起爆． 方法　用一维应力冲击波理论探讨靶板内冲击波压力的传播以及带壳Ｂ炸药的冲击起爆, 采用 Φ１４．５ ｍ ｍ 口径的滑膛式火药枪作为发射器, 并用靶网测速法对破片撞击屏蔽炸药（Ｂ炸药ＴＮＴ／ＲＤＸ＝ ４０／６０） 的撞击引爆问题进行了理论和试验研究． 结果　给出了屏蔽Ｂ炸药的临界起爆能量和临界起爆压力． 结论　实验结果与理论分析二者吻合较好     

新型钝感炸药组分配比对安全性影响的研究

新概念反应装甲的出现对传爆系统所用炸药提出了新的使用要求,即同时满足高威力、高安全性.充分考虑了钝感机理、粘结机理和组分配比对安全性的影响特性,研制了一种以PETN为主体,蜡、石墨、聚异丁烯为钝感剂与粘结剂的新型钝感炸药,进行了冲击波感度、机械感度以及火烤特性试验.试验结果表明:该新型钝感炸药具有理想能量和感度性能满足技术要求,为解决安全传爆技术奠定了基础.     

PBX传爆药撞击感度影响因素的研究

为满足耐撞击用高能钝感传爆药，设计了以HMX和NTO为主体炸药，以含能聚合物1^#和2^#为粘结剂的传爆药配方，利用50％特性落高法对PBX传爆药的撞击感度进行了试验研究，分析了传爆药配方撞击感度的钝感机理和影响因素．     

关于JD—X传爆药冲击波感度的研究

ＪＤ－Ｘ是一种高耐热性，加工安全性好的传爆药，其压药工艺性好，冲击波起爆感度适宜。本文以改进的小隔板试验为基础，讨论了主炸药粒度、粘结剂品种等对ＪＤ－Ｘ传爆药冲击感度的影响。     

HMX粒度对HMX／F2641冲击波起爆感度的影响研究

目的 研究主体炸药ＨＭＸ粒度对ＨＭＸ／Ｆ２６４１冲击波起爆感度的影响，方法 采用小隔板试验测定不同粒度下传爆药（ＨＭＸ，Ｆ２６４１料比＝９５：５）的冲击波感度，并进行理论分析，结果 给出了不同粒度下传爆楷的冲击波感度值，冲击波感度值以５０％起爆对应的隔板值表示，结论 主体炸药粒度对传爆药的冲击波起爆感度具有显著影响，在中等密度条件下，传爆药冲击波感度随主体药粒度的减小而降低，表明中等密度条件下ＨＭ     

LLM-105基传爆药柱起爆能力实验与数值模拟

为了研究不敏感传爆药在爆炸序列中对主装药的起爆能力,选用TATB炸药为被发药柱, 2A12铝合金为隔板材料,进行了LLM-105基传爆药柱的起爆能力实验,并采用点火增长反应速率方程对LLM-105传爆药柱起爆能力实验进行数值模拟研究.保持模型其他参数不变,通过调整铝隔板厚度,模拟预估了在该装药条件下被发药柱TATB发生冲击起爆的临界铝隔板厚度.为确定材料参数以及模拟计算结果的准确性,进行临界铝隔板厚度验证实验.结果表明:LLM-105基传爆药柱有完全起爆TATB钝感炸药的能力;该装药条件下LLM-105基传爆药柱起爆TATB的临界铝隔板厚度为1.3～1.5 mm,模拟预测结果与验证实验结果基本相符.     

长持时爆炸冲击波产生方法

不同持时的爆炸冲击波对建筑结构及防护工程的作用显著不同,在试验或数值模拟中常需要得到长持时爆炸冲击波,延长爆炸冲击波正压作用时间是研究长持时爆炸荷载下结构响应的难点。在AUTODYN中建立长筒爆室小当量炸药多点延时起爆模型,分析爆炸冲击波在长筒爆室中的传播规律,研究管道长度、延时起爆时差、起爆顺序对冲击波波形的影响。结果表明：距离增加,超压峰值减小、正压持续时间增加;根据炸药量和爆室长度合理地选择起爆时差可以获得波形丰满且连续衰减的超压时程曲线;爆室底部起爆、合理控制延时间隔,可以形成类似于大当量远距离爆炸下产生的连续衰减的长持时冲击波。分别给出100、200 ms爆炸持时起爆方案,为长持时爆炸模拟装置的设计提供技术支持。     

HMX/F2641 混合炸药输出钢凹值与爆压关系的研究

目的探讨混合炸药 HMX/F2641 的输出钢凹值与爆压的关系. 方法在小隔板试验测定混合炸药 HMX/F2641 钢凹值的基础上, 用爆速法及相关理论来确定钢凹值与爆压的关系. 结果给出混合炸药 HMX/F2641 的钢凹值与爆压的关系公式及其适用范围. 结论在测定 HMX/F2641 钢凹值的基础上, 可利用钢凹值与爆压的函数关系计算出爆压来定量表征混合炸药能量输出的大小.     

Theoretical Model for Calculating Electric-Power Curves Depicting Accelerated Flyer by Exploding Foil

A theoretical model for calculating electric-power curves of small-size foil during its electrical explosion is given.This technique is based on temperature dependence of foil conductivity.After taking into account the energy conversion of the foil explosion,the power-time curve is applied to the hydrodynamic code.One-dimensional numerical simulations of electric-explosion driving flyers are performed using this code.Calculated flyer velocities lie within ±8% of experimental data from Lawrence Livermore Nat...     

Method of Testing the Flyer Sensitivity of Explosives

By means of Mylar flyer shock explosives driven by electric gun, the method of testing the flyer initiation sensitivity of explosives is studied, and some experiments are done. The experimental results show that the test method established is correct, which is very important and instructive to study and evaluate the safety and reliability of explosives. For the moment, the test should be researched and discussed further.     

Study on Property of Desensitized Explosive Film

The mechanical sensitivity, the critical thickness of detonation wave propagation and detonation velocity of desensitized PETN film were studied by experiments. The relationship between the mass of desensitizer paraffin wax and the friction sensitivity of desensitized PETN film was tested. According to the microstructure of film, the function of desensitizer was explained. It was proved that the explosive film could make explosive element micromation and kept its inherence properties by the result of testing the propagating critical dimension of the desensitized PETN film detonation wave. The explosive velocity of confined desensitized PETN film was tested by the multiplex optical fibre.     

HMX粒度对其撞击感度的影响研究

通过实验研究了6种粒度HMX的撞击感度,以及将粗细颗粒的样品按一定比例级配后对撞击感度的影响.结果表明,HMX粒度与其撞击感度存在显著的线性相关关系,经粗细颗粒级配后的样品的撞击感度介于粗颗粒样品和细颗粒样品的撞击感度之间,且随着细颗粒所占比例的增大,级配样品的撞击感度减小.本文从理论上对实验结果进行了探讨.     

含能材料HMX-2F的性能研究

用密度泛函理论对HMX-2F分子和晶体进行计算,HMX-2F与HMX相比,发现HMX-2F电子结构有所变化,具有较高撞击感度。其晶体能带结构和态密度变化较小,预示它们具有相近的电火花感度。此外,HMX-2F具有较大的能量、密度和爆轰性能,预示其是一种潜在的综合性能良好的含能材料。     

Surface plasmon resonance sensor based on molecularly imprinted films for the detection of pentaerythritol tetranitrate (PETN)

A novel surface plasmon resonance(SPR)sensor based on molecularly imprinted films(MIFs)was developed for the detection of pentaerythritol tetranitrate(PETN).In this work,the thin MIFs were formed on a gold sensor chip through thermal co-polymerization of functional monomers(methacrylic acid,MAA)and crosslinking monomers(ethylene glycol dimethacrylate,EGDMA)in the presence of template molecules PETN.The template molecules PETN were subsequently removed from the MIFs simply by rinsing the MIFs with a mixture of acetonitrile and acetic acid 9∶1(v/v),thus the recognition sites were formed for specific detection of PETN.According to the mass coverage equation,the surface coverage of removed PETN from MIFs was about 10.8 ng/mm2.The developed SPR sensor allowed for the detection of PETN at concentration down to 10-10 mol/L.A control experiment utilizing an analogue cyclotrimethylenetrinitramine(RDX)showed MIFs' good selectivity to PETN.     

Computational studies on the structure and detonation properties of nitro-substituted triazole-furazan derivatives

Some nitro-substituted triazole-furazan derivatives are considered as potential candidates for high energy density compounds through quantum chemical treatment. Their geometric and electronic structures, band gap, thermodynamic properties and detonation properties were studied using the density functional theory at the B3LYP/6-311+G^** level. The calculated energy of explosion, density, and detonation properties of model compounds were comparable to 1,3,5-trinitro-1,3,5-triazinane (RDX) and 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (HMX). The heats of formation and bond dissociation energy were also analysed to understand the nature of thermal stabilities and the trigger bond in the pyrolysis process.     

重结晶制备奥克托今（HMX）粒径及晶形的研究

采用溶剂-非溶剂重结晶法制备出奥克托今（HMX）并对其粒径及晶形进行了研究,通过单一改变溶剂、温度、溶剂-非溶剂混合速率和搅拌速度研究了HMX重结晶过程中的动力学行为．实验表明：在25℃时,用二甲亚砜（DMSO）作溶剂,非溶剂与溶剂质量比为100：1,将两者迅速混合所结晶出的HMX晶体平均粒径为462nm,且其分布均匀呈短柱状团聚;用丙酮作溶剂时,结晶不均匀多呈长条状;用68wt％硝酸作溶剂时,结晶呈立方块状．