Modified Nano Silica by Acrylate for High Performance Hard Coating

The surface modification of nano silica was carried out with acrylate and then organic/inorganic hybrid coating material was prepared using commercially available acrylic hard coating material with the modified nano silica. UV curing was carried out for the prepared coating material on poly(ethylene terephthalate) (PET) film and physical properties were evaluated. FTIR results show that the hydroxyl groups on the surface of nano silica were successfully modified with acrylate. It was found that inorganic/organic UV curing between acrylate and acrylate modified nano silica resulted in the improvement of surface hardness and anti-scratching behavior with maintaining optical transmittance but the increase of haze was noticed due to the increase of light scattering on the rough surface by nano silica.