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A comparison: paint without (left) and with AEROSIL® (right)
A user-friendly applicable paint doesn't drip off the brush and doesn't run when it dries on vertical surfaces. At the same time, the coating should have a low viscosity due to the mechanical loading during the application process. Many coating systems owe this behavior - which the specialists call thixotropy—to the fumed silica AEROSIL®.
In a state of rest, the silica particles form a loose network: the coating is viscous. This network is destroyed when the coating is stirred, shaken, sprayed or painted, suddenly becoming considerably thinner. But as soon as it reverts to a state of rest, the molecules cluster into a network again. Based on this characteristic, AEROSIL® not only controls rheological behavior, but ensures that the heavier components of a liquid coating material don't settle during storage.
Fact Sheet: AEROSIL® R 202 and AEROSIL® R 208 in Marine & Protective Coating Formulations
Fact Sheet: AEROSIL® R 805 - Outstanding rheological efficiency combined with the utmost transparency in 2-Component High Solids Coatings
Fact Sheet: AEROSIL® Specialized fumed silica to enhance coatings performance
Fact Sheet: Silica Product Portfolio - The best choices for your printing inks
Industry Brochure: AEROSIL® for Paints & Coatings
Product- as well as safety data sheets (SDS) of our various AEROSIL® fumed silica grades, can be found at our product recommendationsmore