HNS的临界厚度测试研究

为了验证六硝基茋(HNS)的爆轰波传播性能,采用楔形装药方法对三种HNS装药的临界厚度进行了实验研究,其装药密度分别为1.00,1.570 g·cm-3,粒径分别为20 μm,9 μm,89 nm.结果表明: HNS粒度对爆轰波传播特性影响显著,粒度减小,临界截面厚度变小,即爆轰波传播性能增强;装药密度的增加利于爆轰波传递,在装药密度为1.570 g·cm-3时,HNS-Ⅳ的临界厚度只有0.46 mm.     

钝感猛炸药金属导爆索安全性试验研究

研究了作为爆轰传递与延期主体的小直径钝感猛炸药金属导爆索 ,在生产、使用、贮存与应用等环节中所涉及的诸如燃烧、烤爆、殉爆、弯曲、拉伸、撞击等作用后的安全可靠性。试验证明 ,外径为 0 .85mm,药芯直径约为 0 .45mm,装药量 0 .45g/ m的含有 HNS炸药的金属导爆索具有较高的安全性能。     

Determination of Solvent Contamination and Characterization of Ultrafine HNS Particles after Solvent Recrystallization

Solvent–antisolvent recrystallization employed for size reduction of HNS has been described and the effect of various parameters such as stirring rate, effect of antisolvent type, antisolvent temperature, ultrasonication, etc. was investigated. Purified HNS, produced by hot solvent recrystallization of production grade crude HNS, of mean particle size ∼95 μm was used for preparation of ultrafine particles of HNS. Solvent contamination in terms of residual solvent was determined by ¹H NMR and GC‐MS analysis. In addition, ultrafine HNS has been characterized for purity (HPLC, ¹H NMR), particle size and shape (PSA and SEM), specific surface area (BET analysis), thermal behavior (TGA, DSC), sensitivity (impact, friction), etc. The results have been compared with C‐HNS. UF‐HNS was >99% pure with mean particle size <1 μm. SEM showed submicrometer size rods like particles of HNS as the final material.     

HNS 炸药压装工艺安全性分析

为确保新型炸药生产过程的安全性,着重从炸药的基本特性、装药工艺流程及工艺参数、压药模具的设计和使用等方面对压装工艺进行安全分析。结果表明,HNS炸药的压装工艺安全可靠。通过对压药模具的爆炸仿真分析和对安全防护装置的爆炸试验,得出结论：即使发生爆炸,现有工艺亦能有效地保护人员安全。     

HNS与NQ的表面能研究

采用毛细渗透法和Washburn方程测定了六硝基芪(HNS)、硝基胍(NQ)和吸收药片在10%乙二醇、乙醇、30%乙二醇、水中的接触角,并通过Young方程及表面化学理论计算了它们的表面能及其分量.结果表明,其值与理论计算值相符合,NQ有较高的表面能为58.31 mJ·m<'-2>,其中极性分量占主要成分为54.73 ...     

Effect of Sampling Methods on N Detection in High Nitrogen Steel

The effect of sampling methods on the detection of N content in the high nitrogen steel (HNS) was studied by variance analysis method. In the experiments, two kinds of samples (rod sample and chip sample) were chosen. It was showed that when the N content was in the range of 0.06%～0.4%, the results obtained by two methods were almost the same, indicating that both were suitable to identify the N in the steel. However, when the N content was higher than 0.4%, the result obtained using chips as sample was lower than that using rod. The N₂ bubble in the rod sample might cause error since it didn't comprise the N content. Hence, the N content could be reflected more accurately by the chip samples. Based on the difference of N content detected by two methods, the shrinkage rate was analyzed theoretically and found to be inversely proportional to the pressure of N₂ bubbles in steel.     

复合絮凝剂处理六硝基茋生产废水的实验研究

通过实验研究了微生物絮凝剂SY-6和无机絮凝剂FeCl 3复合体系协同互补作用下对六硝基茋生产废水的处理效果，并对投加量、投加顺序、pH、温度进行优化。结果表明：复合絮凝剂的处理效果优于单一絮凝剂，处理后水样COD去除率达70.77%，絮凝率达72.7%，色度去除率达84%。     

Porous structure and reduced sensitivity of 2,2’,4,4’,6,6’-hexanitrostilbene (HNS) prepared by different solvation and desolvation methods

ABSTRACT

The sensitivity and performance of energetic materials strongly depend on their microstructure. Different solvation and desolvation methods were applied to prepare high explosive HNS with modified porous structure. Vacuum pyrolysis and a novel anti-solvent extraction method have been applied on the desolvation of the HNS?DIO (HNS = 2,2?,4,4?,6,6?-hexanitrostilbene; DIO = 1,4-dioxane) solvate to obtain porous HNS, while in the solvation process, the porous HNS was exposed to the solvent vapor generated by low vacuum or heating to form porous HNS?DIO solvates. After the desolvation of the porous HNS?DIO solvates, HNS with modified porous structure was achieved. This porous HNS and modified porous HNS reveal a reduced impact and friction sensitivity, compared to the raw HNS. The microstructures of HNS tuned by these different supramolecular assembly and disassembly methods were described and the feature of the methods was also discussed. These results highlight a new, simple, effective and controllable crystal engineering strategy for the design and optimization of the microstructure of energetic materials.     

液滴微流控技术制备亚微米级HNS基PBX复合微球

为了获得形状规则、流散性好和粒径均一的球形化造型粉,采用液滴微流控技术,研究了不同黏结剂对2,2’,4,4’,6,6’-六硝基二苯基乙烯(HNS)复合微球性能的影响。分别选取氟橡胶(F₂₆₀₄)、硝化棉(NC)和聚叠氮缩水甘油醚(GAP)对亚微米HNS进行球形化造粒制备,成功制备出亚微米级HNS/F₂₆₀₄(95/5)、HNS/NC(95/5)和HNS/GAP(95/5)复合微球。通过扫描电镜、X射线衍射仪、比表面积、热分析仪、真密度测试仪和机械感度测试仪等对微球进行测试和表征。结果表明：3种黏结剂均能制得球形度高、单分散性好、粒径分布窄的HNS复合微球,平均圆形度分别为0.934,0.915,0.925,D₅₀分别为45.39,58.68,45.43μm(跨度均小于0.55),热分解峰温分别为354.44,349.53,339.37℃。球形化过程使微球真密度分别增加到1.9408,1.9383,1.9204 g·cm^-3,有效提高了HNS装药性能。微球堆积形成的锥角分别为27°,24.3°,24°...     

降解六硝基茋废水用复合型微生物絮凝剂产生菌的筛选及应用

从一种单体猛炸药-六硝基茋生产废水及被其污染的土壤和杨树枝中分离筛选具有较高活性的复合型微生物絮凝剂产生菌,通过常规分离、纯化、驯化获得对六硝基茋生产废水的高效降解菌,采用单因素试验进行培养基及絮凝条件优化,获得最佳絮凝条件,将其应用于六硝基茋生产废水的处理。试验结果表明,成功筛选出了对六硝基茋生产废水具有较高降解能力并且絮凝活性较高的MBF4菌株,该菌产絮凝剂的最适碳源为可溶性淀粉,最适氮源为蛋白胨,最适初始pH为5.0,最佳投加比例为D1:D3=2:1,最佳絮凝条件为:投加量为3 mL,pH为8,金属离子为1 mL Ca2+,对六硝基茋生产废水的色度、浊度、COD去除率分别为93.33%、51.13%、73.08%,可为六硝基茋生产废水的后续处理提供有利条件。