Heat/durability resistance of the superhydrophobic PPS-based coatings prepared by spraying non-fluorinated polymer solution

The purpose of this work was to prepare a non-fluorinated superhydrophobic composite coating with heat/durability resistance and excellent adhesion properties. This procedure was based on organic-inorganic molecular hybrid Zinc oxide (ZnO)/Carbon Nanotubes (CNTs)-Poly(dimethylsiloxane) (PDMS) and Stearic acid compound. The coating produced was characterized in terms of their superhydrophobic properties and morphology. In optimized conditions, the contact angle (CA) for water and oil deposited on the coating were as high as 172, and 154A degrees, respectively. In addition, the composite coating could maintain superhydrophobic even soaked in liquid with pH from 1 to 14. The resulting superhydrophobic composite coating showed good thermal stability, which could maintain hydrophobic even under a harsh environment with the high temperature over 150 A degrees C. The contact angle of the prepared coating could still keep superhydrophobic even after being exposed in air about 90 days, showing a good performance in durability. The enhancement in these preliminary results will guide the design and fabrication of the non-fluorinated commercial superhydrophobic coatings.