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《火炸药学报》2015,(5)
为研究TATB基和CL-20基PBX爆轰波的拐角性能,采用蘑菇(Mushroom)试验计算了含95%TATB基(PBX-Ⅰ)、CL-20基(PBX-Ⅱ)及添加了铝粉的CL-20基(PBX-Ⅲ)炸药药柱在起爆直径10mm和6mm条件下的出射角、熄爆角及延迟时间,讨论了3种PBX炸药的爆轰传播特征和拐角性能。结果表明,起爆直径为10mm时,PBX-Ⅰ的出射角和熄爆角(22.7°和31.9°)明显小于PBX-Ⅱ的出射角和熄爆角(均为90°);起爆直径为10mm和6mm时,PBX-Ⅱ和PBX-Ⅲ的出射角和熄爆角均为90°,都能够传播为类似球形。对于CL-20基PBX,随着铝粉的加入和起爆直径的减小,其炸药半球均能够达到可靠传爆状态,具有较好的拐角性能。TATB基PBX炸药药柱的出射角和熄爆角均显著减小,表明TATB基PBX炸药药柱的拐角性能较差。3种PBX炸药的拐角性能优劣顺序为:PBX-ⅡPBX-ⅢPBX-Ⅰ。 相似文献
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TATB基PBX的热膨胀系数研究 总被引:3,自引:1,他引:3
用线膨胀仪测试了TATB基PBX的线膨胀系数(CTE),分析了配方、工艺等因素对PBX的CTE的影响情况。结果表明,氟聚合物粘结的TATB基PBX在室温—70℃间的CTE值很大,粘结剂氟聚合物在物理特性上的差别对TATB基PBX的CTE影响很小,而替用玻璃化转变温度高于75℃的高聚物可使PBX在室温—70℃间的CTE值显著下降。与钢模压制方法相比,采用等静液压方法可以便TATB基PBX药柱在室温—70℃的CTE值降低30%以上。冷热循环处理也可在一定程度上降低PBX的CTE值。 相似文献
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为研究损伤炸药的安全性,在温度载荷和机械载荷的复合作用下,对TATB基PBX炸药药柱进行了较轻微和较强烈两种不同程度的损伤试验。测试了损伤前后PBX药柱的密度、超声波声速和增益值变化,采用隔板试验测试了冲击波感度。结果表明,经两种复合载荷作用后药柱的密度分别减小0.15%和2.16%,超声波声速减小0.97%和7.87%,增益值增加43.32%和49.07%;50%爆轰隔板厚度分别增加约2.08%和30.21%,表明复合载荷作用越强烈,药柱密度和声速值减小越明显,损伤越严重,冲击波感度越高。 相似文献
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《火炸药学报》2015,(4)
采用水悬浮包覆技术制备了TATB/HMX基PBX,研究了料液比(TATB/HMX与纯净水的质量比)、温度、真空压力、颗粒的成熟时间、表面活性剂等因素对TATB/HMX基PBX包覆效果的影响。结果表明,当料液比为1∶10时,水对包覆颗粒的打磨作用明显;真空压力为0.045MPa时,60℃可以使乙酸乙酯/水恒沸物不沸腾,且包覆颗粒呈球形;在温度为60℃、真空压力为0.045MPa、搅拌速率为500r/min条件下,控制成熟时间为3min,TATB/HMX基PBX的最大堆积密度为0.8240g/cm3;Span-80/Tween-80(质量比6∶4)复合表面活性剂可明显改善TATB/HMX基PBX的包覆效果。 相似文献
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低热应力下石蜡对压装RDX基PBX炸药性能的影响 总被引:1,自引:0,他引:1
《火炸药学报》2015,(5)
为了解石蜡在低热应力下对压装含Al粉RDX基PBX炸药性能的影响,用扫描电镜、聚焦显微镜、透射显微镜、X线断层摄影仪观察了药柱在55℃加热57d的的微观结构;测量了药柱的体积、质量和密度,并测试了其真空安定性、摩擦感度、撞击感度、抗压强度、抗剪强度。结果表明,加热后药柱中石蜡软化连接,黏结剂互相粘结;药柱质量减少0.1%,体积增加0.5%,平均密度减少0.6%,未见裂纹;摩擦感度从8%降至0,抗压强度增加30%,抗剪强度增加83%。说明低热应力并未影响药柱的撞击感度、安定性和结构完整性,此时药柱中的石蜡发生软化迁移,分布均匀化,使药柱压制成型时的缺陷得到修复,从而降低了药柱的摩擦感度,并提高了抗压强度和抗剪强度。 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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D. G. Gordeev L. F. Gudarenko M. V. Zhernokletov V. G. Kudel’kin M. A. Mochalov 《Combustion, Explosion, and Shock Waves》2008,44(2):177-189
A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation
of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from
the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO2) of density 0.08 g/cm3.
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Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008. 相似文献
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Jorge Marcelo Romero Soledad Bustillo Hugo Enrique Ramirez Maisuls Nelly Lidia Jorge Manuel Eduardo Gómez Vara Eduardo Alberto Castro Alicia H. Jubert 《International journal of molecular sciences》2007,8(7):688-694
A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out. 相似文献
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A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%. 相似文献
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醋酸纤维素取代基分布与性质的关系 总被引:9,自引:0,他引:9
分析了以吡啶为溶剂的醋酸纤维素的13C-NMR核磁共振谱,得出了三种不同位置羟基的取代度。结合X—射线和DSC分析,初步说明具有相同取代度但未经水解和经过水解的醋酸纤维素(CA) 性质上的差异是由于三个羟基上的取代度分布不同及消晶程度差异所致。 相似文献