Typically, a hydrophobic coating is achieved by surface modification, using treatments that involve adherence, absorption or coating of micro- or nanostructures. These coatings work in biomimetic ways, where they mimic the mechanism of naturally hydrophobic occurrences, such as lotus leaves, rose petals and duck feathers. The hydrophobic properties can be explained by two types of wetting behaviours called the Wenzel state or Cassie state, which rely on surface roughness or air pocket formation to boost hydrophobic properties.
This coating technology offers not only hydrophobic properties, but also self-cleaning, UV-blocking, and antifogging properties. Its ability to be applied to a variety of substrates offers the potential for a wide range of uses.
This coating is made from titanium-based precursors that are hydrolysed into a titanium sol, which is an oxide form of titanium. A thin coating of the titanium sol is then applied to the substrate by dipping or spraying, with the potential of using other application processes. This is followed by an ambient or oven drying process. As a result, a titanium nanomolecular microstructure is formed on the surface of the substrate. The titanium sol coating on the surface will change the surface energy and surface roughness to give the hydrophobicity, self-cleaning, UV-blocking and anti-fogging properties.
Other features of the coating include:
The coating is versatile and offers the potential to target multiple markets including these sectors:
The benefits of this hydrophobic coating include: