This historical perspective overviews the dispersion stability and rheological properties of fumed and colloidal silica suspensions in aqueous solutions as a function of the volume fraction of silica (ϕ) (where ϕ is ≤0.1). The silica suspensions exist in a gel state at lower ϕ in acidic conditions than at alkaline pH. The steady-state shear viscosities of silica suspensions at acid conditions exhibit shear thinning behavior at lower ϕ than in alkaline conditions; the magnitudes of the dynamic moduli of the silica suspensions at acidic pH are larger than those at alkaline pH. Changes in the dispersion stability and rheological behavior of the silica suspensions may be attributable to the addition of salt, which decreases electrostatic repulsion. Furthermore, the effects of polymer adsorption on the dispersion stability and rheological behavior of hydrophilic or hydrophobic silica suspensions are discussed.

这个历史的角度概述了分散稳定性和在水溶液中的热解和胶体二氧化硅悬浮液的流变性质如二氧化硅（体积分数的函数φ）（其中φ是≤0.1）。所述二氧化硅悬浮液在凝胶状态下，在存在φ比在碱性pH的酸性条件。硅悬浮液在酸性条件下的稳态剪切粘度在较低的ϕ下表现出剪切稀化行为比在碱性条件下 在酸性pH条件下，二氧化硅悬浮液的动态模量大于在碱性pH条件下的动态模量。二氧化硅悬浮液的分散稳定性和流变行为的变化可能归因于盐的添加，这降低了静电排斥。此外，讨论了聚合物吸附对亲水性或疏水性二氧化硅悬浮液的分散稳定性和流变行为的影响。