Changes in properties of an acrylic-based polyurethane clear coat via the addition of a hydrophobic nano-silica

Hydrophobic nano-silica (Aerosil R 972, Degussa, Germany) was employed to prepare a series of 2-pack acrylic polyol polyurethane nano-composite coatings in order to study changes in properties of the resultant coatings. Some morphological, mechanical, rheological, thermal and optical properties of such coatings were investigated by transmission electron microscopy (TEM), tensile strength measurements, rotaviscometry, DSC analyses, UV-Visible spectrophotometry and turbidimetry.

Keywords:

hydrophobic nano-silica , nano-composite coatings , polyurethane clear coat , properties