Nine uses of fumed silica
The primary particle size of fumed silica is between 7 and 80 nm, and the specific surface area is generally greater than 100 m2/g. It has nano-effects and exhibits various excellent properties in materials. It is mainly used as additives and fillers, and has a wide range of uses. The matrix material can add many properties that it does not have.

Filling and reinforcement: Adding fumed silica to the matrix material can improve the mechanical properties such as tensile strength and modulus of the material.

Flame retardant and smoke suppression: the combination of fumed silica and flame retardant helps to improve the flame retardant effect of the material and reduce the amount of smoke generated during combustion.

Flow-increasing effect: fumed silica can enhance the fluidity of dispersed particles in the dispersion system and prevent particle consolidation and sedimentation.

Thickening effect: Adding fumed silica to paint and ink can make the paint achieve the desired viscosity.

Decolorization effect: Similar to carbon black, the high surface energy provides a strong adsorption effect for fumed silica, which can adsorb colored impurities in the liquid.

Catalyst carrier: fumed silica can be uniformly dispersed in solvent and matrix. Using fumed silica as a carrier to carry the catalyst into the system helps to improve the activity and efficiency of the catalyst.

Matting effect: light will be refracted through the phase interface between fumed silica and the matrix material, which will reduce the reflective effect of the material.

Anti-foaming effect: Adding fumed silica to the fluid can reduce the generation of air bubbles.

Polishing agent: fumed silica is hard and has a small particle size, similar to a whetstone, and can be used for polishing the surface of materials.

In addition, there are many different uses of fumed silica, which are used in medicine, research, chemical industry, daily use, cosmetics and other fields.