(1) The fumed silica is surface-treated with methacryl silane and then added to a polyurethane coating to provide a friction-resistant effect.
(2) Fumed silica can also improve the weather resistance and scratch resistance of the coating and improve the bonding strength between the coating and the substrate.
(3) Fumed silica has strong ultraviolet absorption and infrared light reflection properties, and it can improve the anti-aging property of the coating by adding it to the coating.
In summary, both current and future manufacturing are moving toward functional and green, and environmentally-friendly coatings and functional coatings have emerged. The manufacture of fumed silica must also be developed towards functionalization and individualization. In order to exert good performance of fumed silica, manufacturers should closely communicate with coating users, and fully consider the key factors such as dispersion and stability in coatings. At the same time, pay attention to the influence of the coating system on the formulation design process.
Hydrophilic fumed silica: IOTA HL4300 / IOTA HL4380
Hydrophobic fumed silica: IOTA HB4151 / IOTA HB4152