Weathering Effect on Surface Characteristics of Superhydrophobic/ Hydrophobic Nanocomposites Coating

Abstract

Superhydrophobic and hydrophobic nanocomposites coating synthesized by electrospinning, polymer solution of (PS/DMF, PMMA/THF and Si/Th) were prepared in different wt% of composition for each solutions and also prepared with addition of TiO2 nanoparticles. Coated specimens were exposed to accelerated weathering test for 6 months. The aim of this research is to study weathering changes and physical properties of these superhydrophobic and hydrophobic nanocomposites coating to demonstrate these coatings in which can keeps their hydrophobicity properties for long period of time. Viscosity, surface tension, contact angle, roughness surface and hardness tests were calculated for all specimens before and after submitted to accelerate weathering test. Also SEM shows morphology of surfaces in which that (PS/DMF) coated specimen have higher amount of bulge or beads, (PMMA/THF) coated specimen having little amount of bulge or beads and defect as compared to specimen before coating, (Si/Th) owns less bulge or beads and defect but having little percent of contaminations at the surface as compared to other coated specimen.

Keywords

• (ps) polystyrene
• (pmma) polymethylmethacrylate
• (si) silicone rubber r.t.v
• (dmf) n
• n-dimethylformamide
• (thf) tetrahydrofuran
• (th) thinner