Cesium tungsten oxide particles, i.e., cesium tungsten bronze particles, may be applied for preparing nano-ceramic color master and thus be used to produce transparent heat insulation film for architectural glass. Among them, the raw material cesium tungsten oxide is cesium tungsten bronze nanoparticles. According to experts, the agglomeration of cesium tungsten bronze nanoparticles affects the performance of masterbatch. In this regard, we need to understand the knowledge of the agglomeration of nanoparticles, such as, the effect of liquid medium viscosity on nanoparticles.
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So, what is the effect of liquid medium viscosity on nanoparticles? In the liquid, the free movement of the nanoparticles is to overcome the shear stress of the medium, and the shear stress of the liquid is the product of the viscosity of the liquid and the shear rate. For high-viscosity liquids, the shear should be larger; for low-viscosity liquids, the shear stress is smaller. Therefore, in a liquid medium with high viscosity, the particle has a slow moving speed, a low collision frequency, and a low probability of agglomeration; and in a low-viscosity medium, the collision frequency is high and the probability of agglomeration is high.
