Investigation of the Effects of Component Ratios on the Properties of Superhydrophobic Polyurethane/Fluorinated Acrylic Co-Polymer/SiO2 Nanocomposite Coatings

Abstract

In this work, polyurethane/fluorinated acrylic co-polymer/silicon dioxide (PU/FAP/SiO2) hybrid superhydrophobic coatings were fabricated on glass substrates via a simple one-step coating process. The effects of each coating component on the coating properties were systematically investigated. The optimized coating exhibits a water contact angle (WCA) of 159° and a rolling angle of 3°. Meanwhile, the coating has an optical light transmittance of 88%, indicating the good transparency of the coating. Besides, the coating demonstrates an adequate level of abrasion resistance. After a total abrasion distance of 300 cm against a piece of 800 mesh sand paper, the sample still kept a water contact angle of about 110°, showing its high abrasion resistance. Therefore, the optimized coating has a great potential for practical application.

Preparation of Transparent Sandwich-like Superhydrophobic Coating on Glass with High Stability and Self-Cleaning Properties

“…Due to the bonding effect between the primer and the hydrophobic silica nanoparticles, the coated surface became highly hydrophobic with a typical Wenzel state. This phenomenon illustrated that the proper rough structure is beneficial for the improvement of surface wettability [26]. However, the 43 • SA was still at a high level and remained in the Wenzel state due to the loss of the air package.…”

No‐organic solvent, no‐fluorinated waterborne superhydrophobic coatings based on SiO2 and IBTS

“…Moreover, elemental fluorine migrated to the coating surface during the film‐forming process, and APTES was hydrolyzed during the heating process to form a Si‐O‐Si micro crosslinked structure, which resulted in good mechanical and hydrophobic properties of the prepared coatings. Chong Ke et al 27 copolymerized WPU with fluorinated acrylic acid, and mixed SiO 2 particles with the copolymer after ultrasonically dispersing them in a mixture of acetone and toluene. Superhydrophobic coatings with an optical transmittance of 88% were prepared.…”

Self-assembly of hierarchical porous structure for stretchable superhydrophobic films by delicately controlling the surface energy

“…For example, Ke et al used polyurethane (PU) as the stretchable substrate and SiO 2 as the coating to fabricate PU/SiO 2 hybrid superhydrophobic surfaces. 17 The water contact angle (CA) decreased from 159 to 110° after 300 cm abrasion with a weight load of 200 g. As discussed above, it is still a great challenge to fabricate stretchable superhydrophobic films with good mechanical properties and high durability.…”