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Dry-Mixing of Sub-micron B and BaCrO_4 Particles for Use in A Time Delay Composition

机译:干混用于延时组合物的亚微米B和BaCrO_4颗粒

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This paper is a study of a novel dry mixing technique called Magnetic Assisted Impaction Mixing (MAIM). This study will investigate the MAIM performance through mixing two powder components and determining the mechanism's mixing capability and how it impacts the mixed product's performance. The powder components used are Boron (B) and Barium Chromate (BaCrO_4), a time delay composition also known as T-10. This mixing method produced mixtures with a narrow particle size distribution range (0.1 -6 μm). The corresponding Particle Size Distribution (PSD) results indicate that MAIM has a significant effect in breaking down the agglomerates of the components such that the final mixture size had a mean particle size of 1.5 μm. Imaging analysis of the MAIM mixture visibly showed that this method produced mixtures with a noticeable level of particle size uniformity, both on the micron and submi-cron level, as well as having improved distribution of boron throughout the mixture. The performance, burn rate, was tested and was well within the performance requirements. The results indicates that the MAIM quite easily achieves a uniform mixture with a good level of distribution between the two mixed constituents. A comparison between the MAIM product and another mixing product using the same mixing components, showed that the MAIM product clearly has a better particle size distribution and this is further noted in the increased distribution of B.
机译:本文是对一种新型的干混合技术的研究,该技术称为电磁辅助冲击混合(MAIM)。这项研究将通过混合两种粉末成分并确定该机理的混合能力及其对混合产品性能的影响,来研究MAIM性能。所使用的粉末成分是硼(B)和铬酸钡(BaCrO_4),这是一种延时组合物,也称为T-10。这种混合方法产生的混合物具有窄的粒度分布范围(0.1 -6μm)。相应的粒度分布(PSD)结果表明,MAIM在分解组分的团聚体方面具有显著作用,因此最终的混合物粒度的平均粒度为1.5μm。对MAIM混合物的影像分析表明,该方法产生的混合物在微米和亚微米级都具有明显的粒度均匀度,并且硼在整个混合物中的分布得到改善。性能,燃烧率经过测试,完全符合性能要求。结果表明,MAIM非常容易获得均匀的混合物,并且在两种混合成分之间具有良好的分布水平。 MAIM产品与使用相同混合组分的另一种混合产品之间的比较表明,MAIM产品显然具有更好的粒度分布,这在B分布的增加中得到了进一步说明。

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