浓悬浮液中纳米SiO2团聚体的渗透率OA北大核心CSCDCSTPCDSCI
Permeability of nano SiO2 aggregates in concentrated susp ension
本文基于悬浮液中渗透性颗粒的短时扩散动力学理论，采用低相干光纤动态光散射方法，测量了相同粒径的纳米SiO2团聚体在不同体积分数时的扩散系数，利用扩散系数随渗透率的变化关系得到纳米SiO2团聚体的渗透率。结果表明：恒温条件下，具有一定渗透率的团聚体颗粒扩散得比硬球颗粒快。实验测量得到的团聚体渗透率与采用photoshop CS6对团聚体SEM图像进行处理计算得到的渗透率符合较好。
The low coherence optical fiber dynamic light scattering method is used to measure the effective diffusion coefficients of nano SiO2 aggregates suspensions with different volume fractions. The single scattering component can be detected preferentially from the multiply scattered light which is backscattered from the dense suspensions by the low coherence optical fiber dynamic light scattering. Consequently, the measured single-scattering spectrum enables the a…查看全部>>
夏辉;杨伟国
中南大学物理与电子学院，长沙 410083中南大学物理与电子学院，长沙 410083
悬浮液渗透率团聚体动态光散射
suspensionspermeabilityaggregatesdynamic light scattering
《物理学报》 2016 (14)
144203-1-144203-5,5
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