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测试了高氯酸·[四氨·双(5-硝基四唑)]合钴(Ⅲ)原样及其超细样品的粒度分布。结果表明,超细样品和原样均呈双峰/多峰分布,且其粒度分布具有分维特征。原样的分维数较低为1.80,3个细化样的分维数均较高,为2.32～2.42。分析认为,研磨时间从0延长至60min,对应样品粒度分布分维数增大,符合通常的粒度分布规律。研磨时间从60min延长至150min期间,对应样品中亚微米和纳米粒子含量较高,团聚较严重,使粒度分布发生异常,粒度分布分维数计算中的相关系数有所减小,分维数计算值不再增加。分维数可在一定程度上反映超细粒子团聚行为的严重程度。
The particle size distribution of the sample of perchlorate · [tetraamino · bis (5-nitrotetrazole)] cobalt (Ⅲ) and its ultrafine samples were tested. The results show that both the ultrafine sample and the original sample show a bimodal / multimodal distribution with a fractal dimension. The original fractal dimension was lower at 1.80. The fractal dimension of the three refinement samples was higher at 2.32-2.42. The analysis shows that the milling time is extended from 0 to 60min, the fractal dimension of the corresponding sample increases, which accords with the usual law of particle size distribution. When grinding time was extended from 60min to 150min, the content of submicron and nanoparticle in the corresponding sample was higher and the agglomeration was more serious, the size distribution was abnormal. The correlation coefficient in the calculation of the fractal dimension of particle size distribution was reduced. The fractal dimension was calculated Value no longer increases. Fractal dimension can reflect the degree of agglomeration of ultrafine particles to a certain extent.