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31.
介绍了国外某些新型不敏感单质炸药的合成和性能,包括硝基化合物炸药FOX07、LLM-105、MTNI、4,6-二硝基苯并氧化呋咱衍生物、PL-1、LLM-116、ANTZ,硝胺炸药I-RDX、TEX以及其它单质炸药DAAF、DAAzF、DAAT。其中FOX-7和LLM-105在不敏感弹药中应用前景良好。 相似文献
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Muhammad Khatib Orr Zohar Walaa Saliba Simcha Srebnik Hossam Haick 《Advanced functional materials》2020,30(22)
Integrating self‐healing capabilities into soft electronic devices increases their durability and long‐term reliability. Although some advances have been made, the use of self‐healing electronics in wet and/or (under)water environments has proven to be quite challenging, and has not yet been fully realized. Herein, a new highly water insensitive self‐healing elastomer with high stretchability and mechanical strength that can reach 1100% and ≈6.5 MPa, respectively, is reported. The elastomer exhibits a high (>80%) self‐healing efficiency (after ≈ 24 h) in high humidity and/or different (under)water conditions without the assistance of an external physical and/or chemical triggers. Soft electronic devices made from this elastomer are shown to be highly robust and able to recover their electrical properties after damages in both ambient and aqueous conditions. Moreover, once operated in extreme wet or underwater conditions (e.g., salty sea water), the self‐healing capability leads to the elimination of significant electrical leakage that would be caused by structural damages. This highly efficient self‐healing elastomer can help extend the use of soft electronics outside of the laboratory and allow a wide variety of wet and submarine applications. 相似文献
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Pursuing new insensitive high explosive (IHE) is the main research hot-point in explosive field. Nitroimidazole compounds were mainly studied in the medicine chemistry in the past[1-2], seldom seen as the components of explosives and propellants. But now, several nitroimidazole compounds, such as 2, 4-dinitroimidazole (2, 4-DNI), 2, 4, 5-trinitroimidazole (2, 4, 5-TNI) and 1-methyl-2, 4, 5-trinitroimidazole (MTNI) etc are found to be the important intermediates of synthesizing new high explosives or itself possessing excellent explosive performances[3-5]. This paper introduces the synthesis, especially the experimental thermal stability, sensitivity and security of 2, 4-dinitroimidazole (2, 4-DNI). 相似文献
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Thomas M. Klapötke Matthias Q. Kurz Philipp C. Schmid Jörg Stierstorfer 《Journal of Energetic Materials》2013,31(3):191-201
5-Aminohydroximoyl-2-hydroxytetrazole (3) was synthesized in a three-step synthesis from inexpensive starting materials. This novel tetrazole derivative contains two energetic moieties: an N-oxide as well as an aminohydroximoyl group. Various energetic nitrogen-rich salts such as hydroxylammonium (4), guanidinium (5), aminoguanidinium (6), ammonium (7), and triaminoguanidinium (8) were synthesized. Moreover, zwitterionic 5-amidrazonyl-tetrazole-2-oxide monohydrate (9) was synthesized. Compounds 4, 5, 8, 9, and 10 were structurally characterized using single-crystal X-ray diffraction. Additionally, all new compounds were characterized using nuclear magnetic resonance (NMR) and vibrational (infrared [IR], Raman) spectroscopy as well as mass spectrometry and elemental analysis. The thermal behavior was studied using differential thermal analysis (DTA) measurements and the sensitivities of the compounds toward shock, friction, and electrostatic discharge were determined. Finally, the enthalpies of formation were calculated (atomization method, CBS-4 M enthalpies) and several detonation/propulsion parameters computed with the EXPLO5 code. 相似文献
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Five lots of RDX (1,3,5-trinitro-1,3,5,-triazinane) were believed to have different shock sensitivities based on large-scale gap test (LSGT) results. Laboratory investigations included direct-insertion mass spectrometry, liquid chromatography, powder X-ray diffraction, polarized light with hot-stage microscopy, infrared and Raman spectroscopy, and differential scanning calorimetry (DSC). DSC proved useful at distinguishing differences between lots. The RDX lots studied included three made in the United States by BAE Ordinance Systems (Holston), one from Eurenco (formally SNPE), and one from Dyno Nobel. Of Holston RDX, two lots had been reprocessed by Eurenco to reduce sensitivity. Increased sensitivity appeared to correlate with increased HMX (octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine) content. Aging and heating of RDX with HMX content appeared to contribute to the formation of an RDX/HMX eutectic, which could explain the enhanced sensitivity observed in some samples. 相似文献
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恒偏向棱镜是指能恒定改变光束传输方向的转向元件。本文分析了恒偏向棱镜,导出了它的光线变换矩阵及失调矩阵,进一步导出了棱镜存在制造公差情况下的变换矩阵,并指出它只是二维失调不灵敏元件。最后分析了它对一般离轴像离散高斯光束的传输变换特性,给出了复曲率和离轴参数的张量变换规律。 相似文献