When applied to clean, moisture-free surfaces such as copper,aluminium, ceramic, steel, tin or glass, Certonal FC-742 dries to athin transparent film with excellent anti-wetting, anti-stiction,anti-migration, and anti-corrosion properties required in manydiverse applications. Certonal FC-742 will form a clear, nearlyinvisible, uniform film that is insoluble in solvents such asheptane, toluene and water. The polymer covalently bonds to glassand metal oxide layers. These films can endure up to 175°C forprolonged periods and maintain good repellency.
The low surface energy films cast from Certonal FC-742 haveexcellent repellency to hydrocarbon oils, silicone oils, syntheticfluids and aqueous solutions. With a surface energy of 11-12dynes/cm, Certonal FC-742 films compare favourably to coatings ofpolyethylene and polytetrafluoroethylene, which have surface energyvalues of approximately 31 and 18 dynes/cm respectively. Thisproperty enables non-solubilising solvents such as heptane, tolueneand water as well as liquids having low surface tension values suchas lubricating oils, silicones etc. to bead and drain freely fromsurfaces coated with Certonal FC-742 while leaving the film intact.FC-742 coating exhibits many of the practical characteristicsdesired in a coating system, as seen below, making it especiallywell-suited for many applications.