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首页> 外文期刊>Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan >Measurements of size distribution of titanium dioxide fine particles in a highly concentrated non-aqueous suspension by using particle self-assembly under an electric field
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Measurements of size distribution of titanium dioxide fine particles in a highly concentrated non-aqueous suspension by using particle self-assembly under an electric field

机译：电场作用下颗粒自组装法测量高浓度非水悬浮液中二氧化钛细颗粒的粒径分布

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This paper describes the measurement of size distribution of TiO2 fine particles in a highly concentrated non-aqueous suspension by using self-assembly of particles under an electric field. Interactive force apparatus (IFA) was used to conduct the measurement. IFA first assembled pearl chains of particles between two electrodes, and then applied the compressive force to change the pearl chain structure by shortening the distance between electrodes. The repulsive force generated when the chain curved while the attractive force created when the chain was broken. The cycle of repulsive and attractive forces corresponds to the size of particles. The results obtained with IFA were compared with results obtained from size measurement by analyzing SEM photographs. IFA indicated the comparable results with the one obtained using SEM. The particle size distribution measured by IFA decreased as a result of increasing the supply voltages. Changes in correlation between size distribution measured by SEM and IFA at different supply voltages were observed in different size ranges. At smaller than 300 nm, result at 0.24 V fit well with the SEM result while at >600 nm gives better agreement with the results at 0.48 V. The difference is mainly due to the increase in number of particles in fine size fraction with increasing supply voltages. Decrease in size indicated that the breakage of aggregate particles and/or disintegration of doublet particles occurred due to the electrical fragmentation. The fragmentation was explained by monitoring the mean diameters and their deviation obtained from IFA measurements at different supply voltages.
机译：本文介绍了在电场作用下，通过使用颗粒的自组装，测量高浓度非水悬浮液中TiO2颗粒的粒径分布。使用交互式测力仪（IFA）进行测量。 IFA首先在两个电极之间组装了颗粒的珍珠链，然后施加压缩力通过缩短电极之间的距离来改变珍珠链结构。当链弯曲时产生排斥力，而当链断裂时产生吸引力。排斥力和吸引力的循环对应于颗粒的尺寸。将通过IFA获得的结果与通过分析SEM照片从尺寸测量获得的结果进行比较。 IFA显示了与使用SEM获得的结果相当的结果。由于电源电压增加，由IFA测量的粒度分布减小。在不同的尺寸范围内观察到在不同电源电压下通过SEM和IFA测量的尺寸分布之间的相关性变化。在小于300 nm时，0.24 V时的结果与SEM结果非常吻合，而在> 600 nm时，其与0.48 V时的结果更吻合。差异主要是由于随着电源的增加，细小颗粒中的颗粒数量增加了电压。尺寸减小表明由于电碎裂而发生聚集颗粒的破裂和/或双峰颗粒的崩解。通过监视平均直径及其在不同电源电压下从IFA测量获得的偏差来解释碎片。

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