SYNTHESIS OF AEROGEL COATINGS AND INVESTIGATION OF ANTI- ICING PERFORMANCES
Project no. 23354 · Status: Kapanmış (Yayın bekleniyor) · 2021
Summary
<p>Icing causes various problems (security weaknesses, process stoppages, malfunctions, shortening of equipment life, economic losses, etc.) in many systems from aircraft to solar panels, wind turbines and power lines. The development of anti-icing/ice-phobic coatings is an effective method for the icing problem we encounter in many areas of our daily lives. Most of the studies carried out to date have focused on providing the ice-phobic feature due to the water repellency (hydrophobicity) of surfaces. These studies are based on the idea that surface micro- nano roughness is an effective strategy in hydrophobic surface design. Recently, however, it has been demonstrated that the roughness of superhydrophobic surfaces is insufficient to prevent ice formation under different environmental conditions. Another effective strategy is the use of slippery liquid-infused porous structures. In this strategy, the desired properties are lost as the lubricant leaves the surface over time. In this study, a hybrid surface coating was designed by using these two strategies together, which are thought to be effective in ice-phobic surface design but have drawbacks. It is aimed to eliminate these disadvantages of the two strategies with the resulting synergistic effect due to the hybrid approach. For this purpose, anti- icing/ice-phobic, multifunctional aerogel coatings were synthesized by sol-gel method and coated on glass surfaces. The characterizations of the prepared coatings were carried out by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM), and contact angle analysis. To examine the anti-icing properties, the results were measured by measuring the ice adhesion forces on the surfaces with a self-designed ice adhesion device. With the synthesized hybrid coatings, the ice adhesion strength has been reduced up to 88.6% compared to the bare glass. It was concluded that the dual-layer hybrid silica aerogel coatings synthesized in this master thesis study could be promising candidates for ice-phobic/anti-icingsurface design.</p>