Use of fumed silica in paper coatings

Pyrogenic silica is one of the most important high-tech ultrafine inorganic new materials. Due to its small particle size, large specific surface area, strong surface adsorption, and Specific properties such as large energy, high chemical purity, and good dispersion properties make it unique in many disciplines and fields.

Paper coatings are mostly water-based coatings. 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 properties;

The particle size and oil absorption capacity of the color inkjet printing paper coating are the most critical parameters in the coating for color inkjet paper. Fumed silica is a nano-scale amorphous silica Silicon oxide particles are an ideal raw material for inkjet printing paper due to their small particle size, large specific surface area, large porosity and high oil absorption value.

Pyrogenic silica has become a key raw material for the ink-absorbing coating of color inkjet printing paper due to its small particle size, large porosity and high oil absorption value. In paper coatings, fumed silica plays two main roles. One is as a thickening thixotropic additive, and the other is as a main filler and the ink receiving layer of the main inkjet printing paper.