共查询到20条相似文献,搜索用时 78 毫秒
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粉煤灰合成沸石的新发展及应用 总被引:2,自引:0,他引:2
阐述了利用粉煤灰合成沸石的基本机理,并介绍了传统水热合成法、碱熔融-水热合成法、盐-热(熔-盐)合成法等粉煤灰合成沸石的方法和其最新发展,以及利用传统的水热合成法将粉煤灰合成沸石的工业化应用情况,对粉煤灰合成沸石的应用途径和前景进行了探讨和展望。 相似文献
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概述了近期国内外TATB合成研究中,采用三取代苯为前驱体合成、VNS直接胺化合成和利用报废火药合成3类合成方法的研究进展。结合TATB合成过程中硝化、胺化反应机理,探讨前驱体结构、胺化试剂等对制备条件的影响,并对合成方法进行了综合评价。 相似文献
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耐温性测试方法是确定离子交换树脂性能的关键技术之一,作者对阴离子交换树脂耐温性测试方法进行了改进,并提出了树脂最高耐热温度试验方法,它具有较好的可操作性和重现性.用该方法对国产和进口两种耐高温离子交换树脂性能进行详细比较,指出国产树脂的交换容量、渗磨圆球率、耐温性和价格等主要指标优于试验用进口树脂. 相似文献
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《应用陶瓷进展》2013,112(3):171-173
AbstractIn this work, we examine the calculation of the mean resisting stress offered to a penetrating projectile by several ceramic targets that are intact or that have been predamaged through explosive loading. When comparing the results of intact and predamaged samples, it is shown that the mean resisting stress offered by alumina targets does not fall much, whereas for silicon carbide ceramics, there is a much larger dropoff in resistance. The mean resisting stress offered by predamaged ceramic, which is analogous to the strength of the damaged material, has been estimated for alumina and silicon carbide and was found to be ~4·3 GPa. 相似文献
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耐高温胶粘剂的研究进展 总被引:5,自引:0,他引:5
文章对当前国内外耐高温胶粘剂进行综述。介绍了各类耐高温胶粘剂的物化性能,以及提高耐高温胶粘剂耐高温性能的一些技术途径和改性方法,并对今后耐高温胶粘剂的发展趋势进行展望。 相似文献
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Yang Fan Cheng Hong Hao Ma Rong Liu Zhao Wu Shen 《Propellants, Explosives, Pyrotechnics》2014,39(2):267-274
Magnesium hydride sensitized emulsion explosives can effectively reduce “pressure desensitization” problems that traditional emulsion explosives encounter in utilization. Shockwave desensitization experiments and underwater explosion experiments show that, compared with traditional glass microspheres (GM) sensitized emulsion explosives, magnesium hydride sensitized emulsion explosives are better at resisting pressure desensitization. The microstructures of GM and magnesium hydride sensitized emulsion explosives before and after compression are studied with scanning electron microscopy, and the pressure desensitization resisting mechanism of magnesium hydride sensitized emulsion explosives is discussed. This work shows that reduction of “hotspots” is the key factor of pressure desensitization of emulsion explosives through comparative research. 相似文献