Fumed silica is one of the extremely important high-tech ultrafine inorganic new materials. Due to its small particle size, large specific surface area, strong surface adsorption, and surface Specific properties such as large energy, high chemical purity, and good dispersion performance are unique in many disciplines and fields.
Paper coatings are mostly water-based coatings, and the surface of fumed silica has a large number of silanol groups, which can form with polar molecules (such as water in water-based coatings) Hydrogen bonding, thus showing good thickening;
The particle size and oil absorption of the color inkjet printing paper coating are the most critical parameters in the color inkjet paper coating. Fumed silica is a nano-scale amorphous Silica particles, because of their small particle size, large specific surface area, large porosity, and high oil absorption value, are ideal raw materials for inkjet printing paper.
Due to its small particle size, large porosity and high oil absorption value, fumed silica has become a key raw material for ink-absorbing coatings of color inkjet printing paper. In paper coatings, fumed silica has two main functions, one is thickening thixotropic additive, and the other is as the main filler and the ink receiving layer of the main inkjet printing paper.
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