Rheology Additives Introduction to Building Materials
Key words
Rheology Additives, Rheology Agents, Coatings
Additives that can improve the rheological properties of coatings are called rheology modifiers, also known as rheology agents. Generally speaking, rheology agents can improve the stability and paintability of coatings and improve the quality of coating films. Such as: prevent the precipitation of pigments and fillers during the storage process of the coating, avoid the splashing and sagging of the coating during the coating process, and improve the leveling performance of the coating film.
In solvent-borne formulations, flow characteristics can be fully controlled by the molecular weight of the binder. In aqueous formulations, the binder is in the form of dispersed polymer particles, so it is not possible to modify the flow behavior by adjusting the molecular weight of the binder. Rheology additives (thickeners) must therefore be used to adjust the flow properties of waterborne coatings.
Types of rheological additives
Fumed silica
Organic bentonite
Active Nano Light Calcium Carbonate
Hydrogenated Castor Oil
polyamide wax
Modified urea
