Non-stick coatings have made cooking and household cleanup easier than ever before. Unfortunately, some non-stick coatings have a poor resistance to scratching and can tend to chip off. By adding colloidal silica to the composition of non-stick coatings, mechanical properties are improved, resulting in more durable non -stick coatings.
The most well-known use for ceramic coatings is cookware. But there are many other applications such as bakeware, hair straighteners and railway vehicles. When used to create ceramic non-stick coatings, colloidal silica acts as a co-binder, and helps increase surface temperature, hardness, and abrasion resistance properties of the resulting surface.
Coatings containing colloidal silica are also used to enhance the function of plastic films, such as polypropylene, polyester, and other polyolefin. These films are often used for wrapping and protecting products.
The plastic films industry uses a number of aqueous coatings that improve the functionality of oriented polypropylene (OPP) films. When coatings contain colloidal silica, some of the coatings’ drawbacks (e.g., poor block resistance) can be remedied.
Colloidal silica is commonly used as a “hot-slip agent” improving runnability of films over a heated surface, or platen, in a packaging machine, making them less like to adhere. This enhancement is the result of increased coefficient of friction and better anti-blocking properties.
Finally, colloidal silica can be used in latex emulsions to enhance the wettability and ink adhesion of water-based inks by controlling the hydrophilicity.
Contact us for advice on how you can improve the efficiency of your application with Levasil Colloidal Silica.